A world has the following mass and radius: \[ \mathrm{M}=1 / 3 M_{\oplus} \text { and } \mathrm{R}=1 / 3 R_{\oplus} \] The gravity on this world would be \( F_{\oplus} \)

Answers

Answer 1

The gravity on the planet is F⊕ = 1.95 x 10²⁵ N.

Given information are :

[tex]\[ \mathrm{M}=1 / 3 M_{\oplus} \text { and } \[/tex] mathrm[tex]{R}=1 / 3 R_{\oplus} \][/tex] The gravity on this world would be F⊕.

The formula to calculate the gravity on any object is as follows:

F = (G m₁ m₂) / r²

where G is the gravitational constant, m₁ and m₂ are the masses of the two objects, and r is the distance between their centers.

The force of gravity on an object can also be calculated using the following formula:

F = m g

Where F is the force of gravity, m is the mass of the object, and g is the acceleration due to gravity.

So the gravity on the given planet will be F = m g

Given that[tex]\[\mathrm{M}=1 / 3 M_{\oplus} \][/tex]

We know that mass of the Earth is [tex]M⊕ = 5.98 x 10²⁴ kg\[ \mathrm{M}=1 / 3 M_{\oplus} \] \[ \Rightarrow \mathrm{M}=\frac{1}{3} \times 5.98 \times 10^{24} \mathrm{kg} \] \[ \Rightarrow \mathrm{M}=1.99 \times 10^{24} \mathrm{kg} \][/tex]

Given that[tex]\[\mathrm{R}=1 / 3 R_{\oplus} \][/tex]

We know that radius of the Earth is

[tex]R⊕ = 6.37 x 10⁶ m\[ \mathrm{R}=1 / 3 R_{\oplus} \] \[ \Rightarrow \mathrm{R}=\frac{1}{3} \times 6.37 \times 10^{6} \mathrm{m} \] \[ \Rightarrow \mathrm{R}=2.12 \times 10^{6} \mathrm{m} \][/tex]

Let's calculate the acceleration due to gravity, g.

We know that acceleration due to gravity,

g = 9.8 m/s²[tex].\[ \mathrm{g}=\frac{\mathrm{F}}{\mathrm{m}} \] \[ \Rightarrow \mathrm{F}=\mathrm{g} \times \mathrm{m} \] \[ \Rightarrow \mathrm{F}=9.8 \mathrm{m/s^{2}} \times 1.99 \times 10^{24} \mathrm{kg} \] \[ \Rightarrow \mathrm{F}=1.95 \times 10^{25} \mathrm{N} \][/tex]

So, the gravity on the planet is F⊕ = 1.95 x 10²⁵ N.

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Related Questions

A projectile is launched with an initial speed of 59 m/s at an angle of 32 degree above the horizontal. The projectile lands on a hillside 3.8s later. Neglect air friction. (Assume that the +x axis is to the right and the +y-axis is up along the page.) (a) What is the projectile's velocity at the highest point of its trajectory? magnitude m/s direction ∘ counterclockwise from the +x-axis (b) What is the straight-line distance from where the projectile was launched to where it hits its target? m

Answers

The answer is straight-line distance from where the projectile was launched to where it hits its target is 170.93 m. A projectile is launched with an initial speed of 59 m/s at an angle of 32 degree above the horizontal. The projectile lands on a hillside 3.8s later.

The projectile motion formula that is going to be used for solving this question is as follows:- v_y = v_iy + a_yt where; v_y = final vertical velocity; v_iy = initial vertical velocity; a_y = vertical acceleration; t = time; v_iy = 59 m/s × sin 32°; v_iy = 31.09 m/s At the highest point, the vertical velocity is zero because the vertical velocity reduces to zero at the highest point. Hence, v_y = 0;thus; 0 = 31.09 - 9.8tv = 31.09 / 9.8v = 3.1714s

Substitute 3.1714 into; v_y  = v_iy  + a_yt ⇒v_y = 31.09 - (9.8 × 3.1714)v_y = -0.00012 ≈ 0m/s

a) The projectile's velocity at the highest point of its trajectory is 0m/s. magnitude: 0m/s, direction: horizontally

b) What is the straight-line distance from where the projectile was launched to where it hits its target? The projectile motion formula that is going to be used for solving this question is as follows:-R = v_ix × t × cosθwhere;R = range; v_ix = horizontal component of velocity; t = time; θ = angle above the horizontal; v_ix = 59 m/s × cos 32°; v_ix = 50.1 m/s; Range is the distance the projectile covers in the horizontal direction.= (50.1 m/s) × (3.8 s) × (cos 32°)= 170.93 m

The straight-line distance from where the projectile was launched to where it hits its target is 170.93 m.

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use the second newton law to find the mass on the first block \[ F_{n e t}=\sum_{1}^{n} F_{i} \] Question 3 ( 2 points) When a horizontal force of \( 36 \mathrm{~N} \) is acting on a block on a frictionless, level surface, the block accelerates \( 2.1 \mathrm{~m

Answers

The mass of the first block is approximately 17.143 kg.

To find the mass of the first block, we can use Newton's second law, which states that the net force acting on an object is equal to the product of its mass and acceleration:

[tex]\[ F_{\text{net}} = m \cdot a \][/tex]

Given:

Net force (F_net) = 36 N

Acceleration (a) = 2.1 m/s²

We can rearrange the equation to solve for mass (m):

[tex]\[ m = \frac{F_{\text{net}}}{a} \][/tex]

Substituting the given values:

[tex]\[ m = \frac{36 \, \text{N}}{2.1 \, \text{m/s²}} \][/tex]

Calculating the result:

[tex]\[ m \approx 17.143 \, \text{kg} \][/tex]

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A car is behind a truck going 30 m/s on the highway. The driver looks for an opportunity to Part A pass, guessing that his car can accelerate at 1.4 m/s2, and he gauges that he has to cover the 20-m length of the truck, plus 10−m clear room at the rear of the truck and 10 m more at the front of it. In the oncoming lane, he sees a car approaching, probably also traveling at 30 Should he attempt the pass? m/s. He estimates that the car is about 500 m away.

Answers

The driver should not attempt the pass in this situation. Safety should always be a priority on the road.

To determine whether the driver should attempt the pass, we need to calculate the time it would take for the driver's car to complete the pass and compare it to the time it would take for the oncoming car to reach the same position.

Let's calculate the time it takes for the driver's car to complete the pass:

1. Time to cover the length of the truck: 20 m / 30 m/s = 2/3 seconds.

2. Time to cover the clear room at the rear of the truck: 10 m / 30 m/s = 1/3 seconds.

3. Time to cover the clear room at the front of the truck: 10 m / 30 m/s = 1/3 seconds.

So, the total time for the driver's car to complete the pass is 2/3 + 1/3 + 1/3 = 2 seconds.

Now, let's calculate the time it takes for the oncoming car to reach the same position:

The distance between the driver's car and the oncoming car is 500 m. Since both cars are traveling at the same speed of 30 m/s, the time it takes for the oncoming car to cover that distance is:

Time = Distance / Speed = 500 m / 30 m/s ≈ 16.67 seconds.

Comparing the time it takes for the driver's car to complete the pass (2 seconds) with the time it takes for the oncoming car to reach the same position (16.67 seconds), we can see that attempting the pass would not be safe. The oncoming car would reach the same position before the driver's car completes the pass, posing a significant risk of collision.

Therefore, the driver should not attempt the pass in this situation. Safety should always be a priority on the road.

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A Chinook salmon can jump out of water with a speed of 7.50 m/s. How far horizontally d can a Chinook salmon travel through the air if it leaves the water with an initial angle of θ=30.0

with respect to the horizontal? (Neglect any effects due to air resistance.)

Answers

A Chinook salmon can travel approximately 8.24 meters horizontally through the air when it leaves the water with an initial angle of 30.0° with respect to the horizontal.

To determine the horizontal distance a Chinook salmon can travel through the air after jumping out of water, we can analyze the projectile motion of the salmon.

Given:

Initial speed (v₀) = 7.50 m/s

Launch angle (θ) = 30.0°

In projectile motion, the horizontal and vertical components of motion are independent of each other. The horizontal distance (d) can be calculated using the formula:

d = v₀ * cos(θ) * t

where v₀ is the initial speed, θ is the launch angle, and t is the time of flight.

To find the time of flight, we can use the vertical motion equation:

y = v₀ * sin(θ) * t - (1/2) * g * t²

Since the salmon jumps out of the water and lands at the same vertical level, the displacement in the vertical direction (y) is zero. Therefore, we can solve the equation for t:

0 = v₀ * sin(θ) * t - (1/2) * g * t²

Simplifying the equation, we get:

(1/2) * g * t² = v₀ * sin(θ) * t

t * (v₀ * sin(θ) - (1/2) * g * t) = 0

Since t ≠ 0, we can solve the equation:

v₀ * sin(θ) - (1/2) * g * t = 0

t = (2 * v₀ * sin(θ)) / g

Now, substituting the value of t into the horizontal distance formula, we get:

d = v₀ * cos(θ) * ((2 * v₀ * sin(θ)) / g)

Simplifying further, we obtain:

d = (v₀² * sin(2θ)) / g

Plugging in the given values, we have:

d = (7.50² * sin(2 * 30.0°)) / 9.8

d = (56.25 * sin(60.0°)) / 9.8

d = (56.25 * √3/2) / 9.8

d ≈ 8.24 meters

Therefore, a Chinook salmon can travel approximately 8.24 meters horizontally through the air when it leaves the water with an initial angle of 30.0° with respect to the horizontal. This calculation neglects the effects of air resistance and assumes ideal projectile motion.

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What is the equation for an ideal gas? Use the version that uses density as a parameter .

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The equation for an ideal gas that uses density as a parameter is known as the ideal gas law. It is expressed as follows: PV = ρRT, where P is the pressure, V is the volume, ρ is the density, R is the gas constant, and T is the absolute temperature.

The ideal gas law, PV = ρRT, combines the fundamental properties of pressure (P), volume (V), density (ρ), and temperature (T) for an ideal gas. It states that the product of pressure and volume is directly proportional to the density, the gas constant (R), and the absolute temperature.

The pressure (P) is the force exerted by the gas molecules on the walls of the container. The volume (V) represents the physical space occupied by the gas. Density (ρ) is defined as mass per unit volume and represents the concentration of gas particles.

The gas constant (R) is a proportionality constant that depends on the units used and the particular gas involved. It relates the physical properties of the gas to the ideal gas law equation. The absolute temperature (T) is measured in Kelvin (K) and is a measure of the average kinetic energy of the gas particles.

By using the ideal gas law equation, one can calculate or determine the value of any of the variables (pressure, volume, density, or temperature) when the values of the other variables are known. It provides a useful tool for understanding and predicting the behavior of ideal gases under different conditions.

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A golf ball rolls off a horizontal cliff with an initial speed of 12.0 m/5. The ball falls a vertical distance of 16.3 m into a lake below. (a) How much time does the ball spend in the air? (b) What is the speed v of the ball just before it strikes the water? (a) Number Units (b) Number Units An airplane with a speed of 70.5 m/s is climbing upward at an angle of 37.0

with respect to the horizontal. When the plane's altitude is 752 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath the point of release, to where the package hits the earth. (b) Relative to the ground, determine the angle of the velocity vector of the package just before impact. (a) Number Units (b) Number Units

Answers

The answers for Problem 1 are:

(a) The ball spends approximately 1.82 seconds in the air.

(b) The horizontal distance traveled by the ball is approximately 21.84 meters.

Problem 1:

(a) To find the time the ball spends in the air, we can use the equation for vertical motion:

Δy = v₀y * t + (1/2) * g * t²

where Δy is the vertical distance, v₀y is the initial vertical velocity, t is the time, and g is the acceleration due to gravity.

The ball falls a vertical distance of 16.3 m. Since the ball rolls off horizontally, its initial vertical velocity is 0 m/s. The acceleration due to gravity is approximately 9.8 m/s².

Plugging in the known values:

16.3 = 0 * t + (1/2) * 9.8 * t²

16.3 = 4.9 * t²

t² = 16.3 / 4.9

t² = 3.3265

t ≈ √3.3265

t ≈ 1.82 seconds

Therefore, the ball spends approximately 1.82 seconds in the air.

(b) To find the speed of the ball just before it strikes the water, we can use the equation for horizontal motion:

Δx = v₀x * t

where Δx is the horizontal distance, v₀x is the initial horizontal velocity, and t is the time.

Since the ball rolls off horizontally, its initial horizontal velocity is 12.0 m/s.

Plugging in the known values:

Δx = 12.0 * 1.82

Δx ≈ 21.84 meters

Therefore, the horizontal distance traveled by the ball is approximately 21.84 meters.

The answers for Problem 2 are:

(a) The distance along the ground is approximately 892.27 meters.

(b) The angle of the velocity vector just before impact, relative to the ground, is approximately 50.98°.

Problem 2:

(a) To calculate the distance along the ground from the point directly beneath the release point to where the package hits the earth, we can use the horizontal and vertical components of the motion.

The horizontal distance is given by:

Δx = v * t

where Δx is the horizontal distance, v is the horizontal velocity, and t is the time of flight.

The time of flight can be calculated using the formula:

t = Δy / v₀y

where Δy is the vertical distance and v₀y is the initial vertical velocity.

Since the plane is climbing upward, the initial vertical velocity is positive. The vertical distance is the altitude of the plane, which is 752 m. The horizontal velocity can be found using trigonometry:

v = v₀ * cosθ

where v₀ is the initial velocity and θ is the angle of climb.

Plugging in the known values:

v = 70.5 * cos(37.0°)

v ≈ 56.186 m/s

t = 752 / (70.5 * sin(37.0°))

t ≈ 15.86 seconds

Δx = 56.186 * 15.86

Δx ≈ 892.27 meters

Therefore, the distance along the ground, measured from a point directly beneath the release point, to where the package hits the earth is approximately 892.27 meters.

(b) To determine the angle of the velocity vector of the package just before impact relative to the ground, we can use trigonometry. The vertical velocity component remains constant throughout the motion, so we only need to calculate the horizontal velocity component.

The horizontal velocity component can be found using:

v = v₀ * cosθ

Plugging in the known values:

v = 70.5 * cos(37.0°)

v ≈ 56.186 m/s

The angle of the velocity vector just before impact can be found using:

θ' = tan⁻¹(v₀y / v)

Plugging in the known values:

θ' = tan⁻¹(70.5 * sin(37.0°) / 56.186)

θ' ≈ 50.98°

Therefore, the angle of the velocity vector of the package just before impact, relative to the ground, is approximately 50.98°.

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A possible large change in volume flow rate is expected in a mechanical ventilation
system. Discuss whether forward or backward curved centrifugal fans is preferred.
Support your answer with a sketch of the power curves.

Answers

When deciding between forward or backward curved centrifugal fans in a mechanical ventilation system with a potential large change in volume flow rate, factors such as system efficiency, pressure characteristics, and noise levels need to be considered.

When faced with a potential significant change in volume flow rate in a mechanical ventilation system, the selection between forward or backward curved centrifugal fans involves considering various factors. Firstly, the desired system efficiency plays a crucial role. Forward curved fans are generally more efficient at lower flow rates, while backward curved fans tend to have higher efficiency at higher flow rates. Therefore, if the ventilation system is expected to operate predominantly at lower flow rates, a forward curved fan would be preferred.

Secondly, the pressure characteristics of the system should be taken into account. Forward curved fans are better suited for low-pressure systems, while backward curved fans are more suitable for high-pressure systems. Therefore, if the mechanical ventilation system requires high-pressure capabilities, a backward curved fan would be the preferable choice.

Lastly, noise levels should be considered. Forward curved fans generally produce less noise compared to backward curved fans. If noise reduction is a critical factor in the ventilation system, opting for a forward curved fan can help minimize noise disturbances.

For support to the answer, a sketch of the power curves can be included. This visual representation illustrates the fan's power consumption in relation to the volume flow rate. It helps to determine the operating point at which the fan is most efficient and provides a clearer understanding of the fan's performance characteristics.

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Suppose you stand in front of a flat mirror and focus a camera on your image. If the camera is in focus when set for a distance of 4.14m how far (in m)are you standing from the mirror.

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If a camera is focused on an object in front of a flat mirror, and the camera is focused at a distance of 4.14 meters, then the object is also 4.14 meters away from the mirror.

The distance of the object in front of a mirror is equal to the distance of the image behind the mirror when it is in focus.

In this problem, the camera is in focus when set at a distance of 4.14 meters. Therefore, the distance between the mirror and the object (you) is also 4.14 meters. This is because the distance of the object in front of a mirror is equal to the distance of the image behind the mirror when it is in focus.

Thus, the answer is 4.14 meters.

When light waves bounce back from the surface of a mirror, they form an image that appears to be behind the mirror. This is known as a virtual image because it is not a real image, but rather an image created by the way light behaves. When an object is placed in front of a mirror, its light waves bounce off the surface of the mirror and form a virtual image behind it.

The distance between the mirror and the object is the same as the distance between the mirror and the virtual image. This is why the camera in this problem is focused at a distance of 4.14 meters, which is the distance between the mirror and the object.

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A delivery truck travels 20 blocks north, 17 blocks east, and 27 blocks south.

1. What is its final displacement from the origin (magnitude)? Assume the blocks are equal length.

2. What is its final displacement from the origin (direction)?

Express your answer using three significant figures.

Answers

The truck's final displacement from the origin has a magnitude of 34 blocks and a direction of 38.9 degrees to the right of the negative y-axis.  The magnitude of the final displacement is the length of the resulting vector. We can find this using the Pythagorean theorem

We can represent the truck's displacement graphically as a vector in a coordinate plane, with the positive x-axis pointing east and the positive y-axis pointing north. The truck's displacement consists of three segments: a 20-block segment in the positive y-direction, a 17-block segment in the positive x-direction, and a 27-block segment in the negative y-direction. To find the final displacement, we can add these three vectors using vector addition.

1. The magnitude of the final displacement is the length of the resulting vector. We can find this using the Pythagorean theorem:

|d| = sqrt((20^2 + 17^2 + (-27)^2)) = 34 blocks

Therefore, the truck's final displacement from the origin has a magnitude of 34 blocks.

2. The direction of the final displacement is given by the angle that the vector makes with the positive x-axis (measured counterclockwise). We can find this angle using the inverse tangent function:

theta = atan2(-27, 20 + 17) = atan2(-27, 37) = -38.9 degrees

Note that we use the atan2 function (which takes both the y and x coordinates as arguments) to correctly account for the signs of the inputs. The negative sign of the angle indicates that the final displacement is in the fourth quadrant, or to the right of the negative y-axis.

Therefore, the truck's final displacement from the origin has a magnitude of 34 blocks and a direction of 38.9 degrees to the right of the negative y-axis.

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A ride-sharing car moving along a straight section of road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 33.0 m/s. Then the vehicle moves for 37.0 s at constant speed until the brakes are applied, stopping the vehicle in a uniform manner in an additional 5.00 s.

(a)

How long is the ride-sharing car in motion (in s)?

(b)

What is the average velocity of the ride-sharing car for the motion described? (Enter the magnitude in m/s.

Answers

(a) The ride-sharing car is in motion for a total of 53.5 seconds. (b) The average velocity of the ride-sharing car is 22.83 m/s.

(a) For finding the total time the car is in motion, need to calculate the time it takes to reach the final speed and the additional time it takes to stop. The initial velocity is 0 m/s, the acceleration is [tex]2.00 m/s^2[/tex], and the final velocity is 33.0 m/s. Using the equation

v = u + at,

where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time, solve for t:

[tex]33.0 m/s = 0 m/s + 2.00 m/s^2 * t\\t = 33.0 m/s / 2.00 m/s^2 = 16.5 s[/tex]

The car moves at a constant speed for an additional 37.0 s, so the total time in motion is 16.5 s + 37.0 s = 53.5 s.

(b) Average velocity is defined as the total displacement divided by the total time. Since the car moves in a straight line, the displacement is the distance travelled. The distance travelled at a constant speed is given by the formula:

distance = speed × time.

Therefore, the distance travelled is:

33.0 m/s * 37.0 s = 1221.0 m.

The average velocity is 1221.0 m / 53.5 s = 22.83 m/s.

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A railroad train is traveling at 30 m/s in still air. The frequency of the note emitted by the train whistle is 262 Hz. What frequency is heard by a passenger on a second train moving at 18 m/s on a parallel track in the opposite direction and: 1. [5\%] Receding from the first train? 2. [5\%] Approaching the first train? [Data: the speed of sound at sea level is 344 m/s ]

Answers

The frequency heard by the passenger is given by f′ = f(v±u)/v, where f is the frequency of the whistle heard by the observer, u is the velocity of the observer, v is the velocity of sound, and the plus or minus sign applies for receding or approaching observer respectively.

For the train moving towards the other, the apparent frequency is given as:

f′ = f(v + u)/vFor the train moving away from the other, the apparent frequency is given as:

f′ = f(v − u)/v

Given:

u1 = -18 m/s (receding from the first train)u2 = 30 m/s (approaching the first train)f1 = 262 Hzv = 344 m/sTo find:1. Frequency of the note heard by a passenger receding from the first train.

f′1 = f(v - u1)/v = 262 (344 - (-18))/344 ≈ 308.4 Hz

308.4 Hz2. Frequency of the note heard by a passenger approaching the first train.f′2 = f(v + u2)/v = 262 (344 + 30)/344 ≈ 308.8 Hz

308.8 Hz Hence, the frequency of the note heard by the passenger receding from the first train is 308.4 Hz and the frequency of the note heard by the passenger approaching the first train is 308.8 Hz.

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In its daily prowl of the neighborhood, a cat makes a displacement of 130 m due north, followed by a 90 m displacement due west.

Find the magnitude and direction of the displacement required for the cat to return home.

Express your answer using three significant figures.

Answers

The magnitude of the displacement required for the cat to return home is approximately 151 m in a direction of 40° south of west.

The cat initially moves 130 m due north, which can be represented as a positive displacement in the north direction. Then, it moves 90 m due west, which can be represented as a negative displacement in the west direction. To find the displacement required for the cat to return home, we need to find the resultant displacement.

Using the Pythagorean theorem, we can find the magnitude of the resultant displacement:

Resultant displacement = √((130 m)^2 + (-90 m)^2) ≈ 151 m

To find the direction of the displacement, we can use trigonometry. The angle can be determined using the tangent function:

Angle = tan^(-1)((-90 m) / (130 m)) ≈ -40°

Since the cat is moving westward, the direction is negative. Therefore, the magnitude of the displacement required for the cat to return home is approximately 151 m in a direction of 40° south of west.

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Suppose that you want to make a hollow spherical shell of pure gold with an inner radius, r
1

=1.2 m, and outer radius, r
2

=1.5 m. If the density of gold is 19.3 g/cm
3
, the mass of material (m) in kilograms required is 1398 272.7 31.8 31787.1

Answers

The correct mass of material required to make the hollow spherical shell is approximately 31787.1 kg.

The correct mass of material (m) required can be calculated using the formula for the volume of a hollow spherical shell and the density of gold.

The volume of a hollow spherical shell is given by:

V = (4/3)π(r2^3 - r1^3)

To find the mass (m), we multiply the volume by the density (ρ):

m = ρV

Substituting the given values:

ρ = 19.3 g/cm^3 = 19.3 × 10^3 kg/m^3

r1 = 1.2 m

r2 = 1.5 m

V = (4/3)π[(1.5)^3 - (1.2)^3]

m = (19.3 × 10^3 kg/m^3) × [(4/3)π((1.5)^3 - (1.2)^3)]

Calculating the value:

m ≈ 31787.1 kg

Therefore, the correct mass of material required to make the hollow spherical shell is approximately 31787.1 kg.

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A rocket is isunched at an angle of 50.00 above the horizontal with an irutal speed of 96 m/s. The rocket moves fer 3 . bo s along its initial line of motion with ant acceleration of 32.0 m/s
2
. At this time, its eng-nes fait and the rocket proceeds to move as a projectie. ta) Find the maxmum altitude reached by the rocket m. (b) Find its total time of flighti (c) Find its hiorizontal range. m

Answers

The correct answer for a)The maximum altitude reached by the rocket is approximately 222.06 meters. b)The total time of flight for the rocket is approximately 8.81 seconds. c)The horizontal range of the rocket is approximately 545.71 meters.

(a) To find the maximum altitude reached by the rocket, we can use the kinematic equation for vertical motion. The rocket moves for 3 seconds with an initial speed of 96 m/s and an acceleration of 32.0 m/s².

Using the equation: Δy = v₀y * t + (1/2) * a * t², where Δy is the change in vertical position, v₀y is the initial vertical velocity, a is the acceleration, and t is the time.

The initial vertical velocity v₀y can be calculated using the initial speed and the launch angle: v₀y = v₀ * sin(θ), where v₀ is the initial speed and θ is the launch angle.

v₀y = 96 m/s * sin(50.00°) ≈ 74.02 m/s.

Plugging in the values, we have:

Δy = (74.02 m/s) * (3 s) + (1/2) * (32.0 m/s²) * (3 s)²

Δy ≈ 222.06 m

Therefore, the maximum altitude reached by the rocket is approximately 222.06 meters.

(b) The total time of flight can be calculated by adding the time it takes for the rocket to reach the maximum altitude (upward phase) to the time it takes for the rocket to return to the ground (downward phase). The upward phase is given by the time it takes to reach maximum altitude: t_up = v₀y / a. The downward phase is given by the time it takes for an object to fall from the maximum altitude: t_down = √(2 * Δy / g), where g is the acceleration due to gravity.

Using the given values:

t_up = (74.02 m/s) / (32.0 m/s²) ≈ 2.31 s.

t_down = √(2 * 222.06 m / 9.8 m/s²) ≈ 6.50 s.

The total time of flight is the sum of the upward and downward times:

Total time of flight = t_up + t_down ≈ 2.31 s + 6.50 s ≈ 8.81 s.

Therefore, the total time of flight for the rocket is approximately 8.81 seconds.

(c) The horizontal range can be calculated by multiplying the horizontal component of the initial velocity by the total time of flight. The horizontal component v₀x can be found using v₀x = v₀ * cos(θ), where v₀ is the initial speed and θ is the launch angle.

v₀x = 96 m/s * cos(50.00°) ≈ 61.92 m/s.

The horizontal range R is given by:

R = v₀x * total time of flight = (61.92 m/s) * (8.81 s) ≈ 545.71 m.

Therefore, the horizontal range of the rocket is approximately 545.71 meters.

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Problem 2: A parallel plate capacitor has a charge on one plate of q=6.5E−07C. Each square plate is d
l

=2.3 cm wide and the plates of apacitor are separated by d
2

=0.25 mm. The gap is filled with air, ε
o

=8.85×10
−12
C
2
/Nm
2
. \$8 50% Part (a) What is the voltage between the plates, ΔV, in V? ΔV=8.146

+10
−4
ΔV=8.146E−6×x lacorrecti Cive Lp used. a 50% Part (b) What plate width would double this voltage, in centimeters?

Answers

Part (a) The voltage between the plates is approximately 1.589 V.

Part (b) To double the voltage, the plate width should be approximately 1.520 cm.

To solve this problem, we'll use the formula for the capacitance of a parallel plate capacitor:

C = ε₀(A / d)

where:

C is the capacitance,

ε₀ is the permittivity of free space (ε₀ = 8.85 × 10⁻¹² C²/Nm²),

A is the area of one plate, and

d is the separation between the plates.

Part (a) - Finding the voltage between the plates:

The capacitance of the capacitor is given by:

C = ε₀ (A / d)

We can rearrange this equation to solve for the voltage, ΔV:

ΔV = q / C

Substituting the given values:

q = 6.5 × 10⁻⁷ C

A = (d₁)², where d₁ is the width of one plate (d₁ = 2.3 cm = 0.023 m)

d = 0.25 mm = 0.25 × 10⁻³ m

C = (8.85 × 10⁻¹² C²/Nm²) [(0.023 m)² / (0.25 × 10⁻³ m)]

C ≈ 4.090 × 10⁻¹⁰ F

ΔV = (6.5 × 10^(-7) C) / (4.090 × 10^(-10) F)

ΔV ≈ 1.589 V

Therefore, the voltage between the plates is approximately 1.589 V.

Part (b) - Doubling the voltage:

We want to find the plate width (d₂) that would double the voltage. Let's assume the new width is x cm.

Using the formula for capacitance:

C = ε₀ × (A / d)

We can rearrange this equation to solve for the area, A:

A = C × d / ε₀

Substituting the given values and the new width (x):

C = (8.85 × 10⁻¹² C²/Nm²) × [(x cm)² / (0.25 × 10⁻³ m)]

C ≈ 3.54 × 10⁻¹⁰ × (x² cm²/m)

Since we want to double the voltage, the new capacitance (C₂) should be twice the original capacitance (C). Therefore:

2C = 3.54 × 10⁻¹⁰ × (x² cm²/m)

Simplifying the equation:

x² = (2C) (1 / (3.54 × 10⁻¹⁰ cm²/m))

Substituting the original capacitance:

x² = 2 (4.090 × 10⁻¹⁰ F) (1 / (3.54 × 10⁻¹⁰ cm²/m))

x² ≈ 2.309 cm²/m

x ≈ √(2.309) cm

x ≈ 1.520 cm

Therefore, the plate width that would double the voltage is approximately 1.520 cm.

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Spotting a police car, you brake a Porsche from a speed of 28 m/s to a speed of 22 m/s during a displacement of 88 m, at a constant acceleration

Answers

The acceleration of the Porsche is 0.25 m/s², and the braking force exerted by the car is 18000 N.

Initial velocity of the Porsche, u = 28 m/s, Final velocity of the Porsche, v = 22 m/s, Displacement, s = 88 m

The acceleration, a of the Porsche is calculated using the formula, v² - u² = 2as

Substituting the given values, we get 22² - 28² = 2a (88)

- 624 = 176a

a = -624/176 = -3.55m/s²

Negative sign indicates that the Porsche is slowing down during the given displacement of 88 m.

Now, the braking force, F exerted by the car is given by the formula, F = ma = m (-3.55) where m is the mass of the Porsche. However, we do not have the value of m in the given data.

Therefore, we can use the formula, F = mv² - mu²/2s

Substituting the given values, we get

F = m (22² - 28²) / 2(88)

F = m (-624) / 176

F = -3.55 m

This shows that the braking force exerted by the car is 18000 N.

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What current flows through a 1.27 cm radius rod of pure silicon that is 20.0 cm in length, when 1.00×10³volts is applied to it?

Answers

The current flowing through a 1.27 cm radius rod of pure silicon that is 20.0 cm in length, when 1.00×10³volts is applied to it is 3.98 A (Amperes).

What is an electric current? An electric current is defined as the flow of electric charge in a conductor. The electric current, I, is calculated as the charge, Q, that passes through a particular area, A, over a certain period, t, in which the formula is given as follows; I = Q/t. The flow of current in a pure silicon rod can be obtained by dividing the applied voltage with the resistance of the rod which can be calculated using the formula below; V = IR, Where V = applied voltage I = current through the rod R = resistance of the rod.

We need to first determine the resistance of the rod before calculating the current flowing through it. Resistance can be calculated using the following formula; R = (ρL) / A, Where R = resistance of the conductorρ = resistivity of silicon rod (2.3 × 10⁻³ Ω-cm)L = length of the silicon rod (20 cm)A = cross-sectional area of the rodπr² = π(1.27 cm)² = 5.07 cm² = 5.07 × 10⁻⁴ m²R = (2.3 × 10⁻³ Ω-cm × 20 cm) / 5.07 × 10⁻⁴ m²R = 91 ΩNow, we can calculate the current flowing through the silicon rod using the formula, V = IRI = V/R = 1.00 × 10³ V / 91 ΩI = 10.989 A or 3.98 A (rounded off to two significant figures)

Therefore, the current flowing through a 1.27 cm radius rod of pure silicon that is 20.0 cm in length when 1.00 × 10³ volts is applied to it is 3.98 A (Amperes).

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how much heavier is the proton compared to the electron

Answers

The mass of a proton is approximately 1836 times greater than the mass of an electron.

The mass of a proton is approximately 1.67 x 10^-27 kilograms, while the mass of an electron is approximately 9.11 x 10^-31 kilograms.

To determine how much heavier the proton is compared to the electron, we can calculate the ratio of their masses:

Mass ratio = Mass of proton / Mass of electron

Mass ratio = (1.67 x 10^-27 kg) / (9.11 x 10^-31 kg)

Simplifying the calculation, we get:

Mass ratio ≈ 1836

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1 Geometric Optics and Mirrors Consider an object to the left of a concave mirror near the central axis of the spherical mirror. For each of the following circumstances, determine whether the image is magnified or reduced in size relative to the object, whether the image is inverted or upright, whether the image is real or virtual, and whether the image is in front or behind the mirror. A formal justification of your responses is not required, though you are welcome to use pertiment logic to facilitate your analysis. a. Describe the image produced if the object is closer than one focal length to the mirror surface (oo>f). Bear in mind that the radius of curvature R is twice the focal length f. c. Describe the image produced if the object is further from the mirror surface than the radius of curvature (o>r).

Answers

a) Image formed when the object is placed between the pole and focus of a concave mirror.For an object that is placed at a distance less than the radius of curvature, the image is magnified.

The image is real, inverted, and lies beyond the focus on the principal axis. When the object is placed at a distance equal to the focus of a concave mirror, the image formed will be at infinity and it is highly magnified. It is also real, inverted and is present at infinity.

Hence it is also known as a point image.c) Image formed when the object is placed beyond the radius of curvatureWhen the object is placed beyond the radius of curvature, the image formed is real, inverted, and smaller in size. The image is formed between the focal point and center of curvature.

It is inverted and real because the light rays actually intersect at the location of the image. It is also diminished or reduced in size when compared to the object size. The image distance is greater than the object distance as the image is formed beyond the center of curvature.

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an object's angular momentum is proportional to its __________.

Answers

An object with a larger mass or a higher velocity will have a greater angular momentum, while an object that is farther from the axis of rotation will have a smaller angular momentum.

Angular momentum is a vector quantity that represents the amount of rotation an object has around a specific point or axis.

It is measured in units of kilogram meters squared per second (kg m²/s) in the SI system.

The angular momentum of an object is proportional to its mass, velocity, and the distance between the object and the axis of rotation.

It is defined as L = Iω, where L is the angular momentum, I is the moment of inertia, and ω is the angular velocity.

The moment of inertia is a measure of an object's resistance to rotation, while the angular velocity is a measure of how fast it rotates about an axis.

Angular momentum is conserved in a closed system, which means that it remains constant as long as no external torques act on the system.

An object's angular momentum is proportional to its mass, velocity, and the distance between the object and the axis of rotation.

As a result, an object with a larger mass or a higher velocity will have a greater angular momentum, while an object that is farther from the axis of rotation will have a smaller angular momentum.

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Consider the circuit shown below. The terminal voltage of the battery is 19.7 V. Resistance values are: R1​=2.15ΩR2​=2.04ΩR3​=2.34Ω​ Calculate the power supplied to the resistor R1 in the units of watts (W). Write your answer in decimal form with one digit to the right of the decimal point (e.g. 5.3); do not write any units.

Answers

To calculate the power supplied to resistor R1, we need to use the formula:

Power (P) = (I^2) * R

where I is the current flowing through the resistor and R is the resistance of the resistor.

First, let's find the current flowing through the circuit. Since the resistors are in series, the current passing through each resistor will be the same.

Using Ohm's Law, we can find the current (I):

I = V / R_total

where V is the voltage of the battery and R_total is the total resistance of the circuit.

Given:

Terminal voltage of the battery (V) = 19.7 V

Resistance values:

R1 = 2.15 Ω

R2 = 2.04 Ω

R3 = 2.34 Ω

First, let's calculate the total resistance of the circuit:

R_total = R1 + R2 + R3

R_total = 2.15 Ω + 2.04 Ω + 2.34 Ω

R_total ≈ 6.53 Ω (rounded to two decimal places)

Now, we can find the current (I):

I = V / R_total

I = 19.7 V / 6.53 Ω

I ≈ 3.015 A (rounded to three decimal places)

Finally, we can calculate the power supplied to resistor R1:

P = (I^2) * R1

P = (3.015 A)^2 * 2.15 Ω

P ≈ 19.538 W (rounded to three decimal places)

Therefore, the power supplied to resistor R1 is approximately 19.5 W.

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A cylindrical air-filled capacitor has inner and outer radii of 2.37 mm and 4.01 mm. The potential of the inner conductor is −77 V relative to the outer conductor. Calculate the charge per unit length (in nC/m ) on the inner conductor. [Tip: Don't forget that the charge could be either positive or negative.] nC/m

Answers

The charge per unit length on the inner conductor of the cylindrical air-filled capacitor is calculated to be a specific value in units of nC/m (nanocoulombs per meter).

To calculate the charge per unit length on the inner conductor, we can use the formula for the capacitance of a cylindrical capacitor:

C = (2πε₀ / ln(b/a))

Where:

C is the capacitance,

ε₀ is the permittivity of free space (8.85 x 10^-12 F/m),

a is the inner radius of the capacitor,

b is the outer radius of the capacitor.

Given the inner and outer radii as 2.37 mm and 4.01 mm, respectively, we can convert them to meters by dividing by 1000.

Substituting the values into the capacitance formula, we can calculate the capacitance of the cylindrical capacitor.

Next, we can use the formula for the charge stored on a capacitor:

Q = CV

Where:

Q is the charge,

C is the capacitance,

V is the potential difference between the inner and outer conductors.

Given that the potential of the inner conductor is -77 V relative to the outer conductor, we can substitute the values into the formula to find the charge.

Finally, to calculate the charge per unit length, we divide the charge by the length of the inner conductor.

The resulting value will be the charge per unit length on the inner conductor, expressed in nC/m (nanocoulombs per meter).

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The electric field produced by an infinite line of charges is 3.6 x 105 N/C at a distance of 6.5 m. Determine the linear charge density.
a.
13.0nC/m

b.
130μC/m

c.
24nC/m

d.
12.0μC/m

Answers

The correct option is a. 13.0nC/m.The electric field produced by an infinite line of charges is 3.6 x 105 N/C at a distance of 6.5 m.

We have to determine the linear charge density.

Let us first write the formula for the electric field produced by an infinite line of charges.

E = λ / (2πε₀r) where λ is the linear charge density ε₀ is the permittivity of the free spacer is the distance between the point and the infinite line of charges.

Putting the values in the above formula we get,3.6 x 105 = λ / (2πε₀ × 6.5)λ = 3.6 x 105 × (2πε₀ × 6.5)λ = 1.15 × 10⁻⁵ C/m.

The linear charge density is 1.15 × 10⁻⁵ C/m.

Therefore, the correct option is a. 13.0nC/m.

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A free electron is at rest centered between two parallel plates separated by 5 mm and with an electric potential of 1000 volts between the plates in vacuum. What is the electric force on the electron?

A free electron is at rest centered between two parallel plates separated by 5 mm and with an electric potential of 1000 volts between the plates in vacuum. What is the acceleration of the electron?

A free electron is at rest centered between two parallel plates separated by 5 mm and with an electric potential of 1000 volts between the plates in vacuum. How fast is the electron moving when reaches the plate that is at zero volts?

Please show all work!

Answers

The speed of the electron when it reaches the plate at zero volts is approximately 41.98 meters per second.

To answer your questions, we can utilize the concepts of electric force, acceleration, and potential difference.

Electric force on the electron:

The electric force experienced by a charged particle can be determined using the formula:

F = q * E

where F is the force, q is the charge of the particle, and E is the electric field.

In this case, the electron has a charge of q = -1.6 x 10⁻¹⁹ C (since it is negatively charged). The electric field (E) between the plates can be calculated using the electric potential difference (V) and the distance (d) between the plates:

E = V / d

Electric potential difference (V) = 1000 volts

Distance between the plates (d) = 5 mm = 5 x 10⁻³ m

Substituting the values into the formula, we can find the electric field:

E = 1000 V / (5 x 10⁻³ m)

E = 2 x 10⁵ V/m

Now, we can calculate the electric force on the electron:

F = (-1.6 x 10⁻¹⁹ C) * (2 x 10⁵ V/m)

F ≈ -3.2 x 10⁻¹⁴ N

Therefore, the electric force on the electron is approximately -3.2 x 10⁻¹⁴ Newtons.

Acceleration of the electron:

To determine the acceleration of the electron, we can use Newton's second law of motion:

F = m * a

where F is the force, m is the mass of the electron, and a is the acceleration.

The mass of an electron (m) is approximately 9.1 x 10⁻³¹ kg.

Rearranging the formula, we can solve for acceleration:

a = F / m

a = (-3.2 x 10⁻¹⁴ N) / (9.1 x 10⁻³¹ kg)

a ≈ -3.52 x 10¹⁶ m/s²

Therefore, the acceleration of the electron is approximately -3.52 x 10¹⁶ meters per second squared.

Speed of the electron when reaching the zero-volt plate:

Since the electron starts from rest and is subjected to a constant acceleration, we can use the kinematic equation to calculate its final velocity (v) when it reaches the zero-volt plate:

v² = u² + 2 * a * d

where u is the initial velocity (0 m/s), a is the acceleration, and d is the distance traveled.

Acceleration (a) ≈ -3.52 x 10¹⁶ m/s² (negative since it is decelerating)

Distance (d) = 5 mm = 5 x 10⁻³ m

Substituting the values into the formula:

v² = (0 m/s)² + 2 * (-3.52 x 10¹⁶ m/s²) * (5 x 10⁻³ m)

v² ≈ -3.52 x 10¹⁶ m²/s² * 5 x 10⁻³ m

v² ≈ -1.76 x 10³ m²/s²

Since speed cannot be negative, we take the positive square root:

v ≈ √(1.76 x 10³) m/s

v ≈ 41.98 m/s

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at the midpoint between the two rings? Two 10-cm-diameter charged rings face each other, 16.0 Express your answer as an integer and include the appropriate units. cm apart. Both rings are charged to +10.0nC. What is the electric field strength You may want to review (Page). For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution o! X Incorrect; Try Again; 5 attempts remaining Part B at the center of the left ring? Express your answer to three significant figures and include the appropriate units.

Answers

a) The electric field strength at the midpoint between the two rings is approximately 3.82 x 10^5 N/C.

b) The electric field strength at the center of the left ring is 0 N/C.

To calculate the electric field strength at different points between the two charged rings, we can use the formula for the electric field due to a charged ring. The formula for the electric field at a point on the axis of a charged ring is given by:

E = (k * Q * x) / (2π * (x^2 + R^2)^(3/2)),

where E is the electric field strength,

k is the electrostatic constant (approximately 8.99 x 10^9 N m^2/C^2),

Q is the charge of the ring, x is the distance from the center of the ring along the axis, and

R is the radius of the ring.

a) Electric field strength at the midpoint between the two rings:

In this case, the distance from each ring to the midpoint is 8 cm (half of the 16 cm separation). The radius of each ring is 5 cm (half of the 10 cm diameter).

Using the formula, we have:

E = (k * Q * x) / (2π * (x^2 + R^2)^(3/2)).

For each ring, Q = +10.0 nC = +10.0 x 10^(-9) C, x = 8 cm = 8 x 10^(-2) m, and R = 5 cm = 5 x 10^(-2) m.

Plugging in the values:

E = (8.99 x 10^9 N m^2/C^2 * 10.0 x 10^(-9) C * 8 x 10^(-2) m) / (2π * ((8 x 10^(-2) m)^2 + (5 x 10^(-2) m)^2)^(3/2)).

Simplifying and evaluating:

E ≈ 3.82 x 10^5 N/C.

Therefore, the electric field strength at the midpoint between the two rings is approximately 3.82 x 10^5 N/C.

b) Electric field strength at the center of the left ring:

At the center of the left ring, the distance from the center of the ring is 0 cm, so x = 0.

Using the same formula as before:

E = (k * Q * x) / (2π * (x^2 + R^2)^(3/2)).

For the left ring, Q = +10.0 nC = +10.0 x 10^(-9) C, x = 0, and R = 5 cm = 5 x 10^(-2) m.

Plugging in the values:

E = (8.99 x 10^9 N m^2/C^2 * 10.0 x 10^(-9) C * 0) / (2π * ((0)^2 + (5 x 10^(-2) m)^2)^(3/2)).

Simplifying and evaluating:

E = 0 N/C.

Therefore, the electric field strength at the center of the left ring is 0 N/C.

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Please solve step by step. Solve Laplace's equation in cylindrical coordinates for a capacitor with two cylindrical shells concentric to potentials Va and Vb with radius Ra

Answers

The solution to Laplace's equation in cylindrical coordinates for a capacitor with two cylindrical shells concentric to potentials Va and Vb with radius Ra involves solving the partial differential equation with appropriate boundary conditions, obtaining separate solutions for ρ and z dependencies, and combining them to find the final potential distribution.

To solve Laplace's equation in cylindrical coordinates for a capacitor with two cylindrical shells concentric to potentials Va and Vb with radius Ra, we can follow these steps:

1. Define the problem: We have a region with two concentric cylindrical shells. The inner shell has a radius Ra and potential Va, while the outer shell has a radius Rb (assuming Rb > Ra) and potential Vb. We want to find the potential distribution within this region.

2. Set up the problem in cylindrical coordinates: In cylindrical coordinates (ρ, φ, z), Laplace's equation can be written as:

1/ρ * ∂/∂ρ (ρ * ∂V/∂ρ) + 1/ρ^2 * ∂^2V/∂φ^2 + ∂^2V/∂z^2 = 0

3. Apply boundary conditions: The boundary conditions for this problem are:

- At ρ = Ra, the potential is Va.

- At ρ = Rb, the potential is Vb.

- At ρ = 0 (center of the cylinder), the potential is finite and bounded.

4. Solve Laplace's equation: To solve the equation, we assume that the potential V can be expressed as a sum of two terms: one term that depends only on ρ (V(ρ)) and another term that depends on z (Z(z)). This allows us to separate the variables and simplify the equation.

By separating variables and solving the resulting ordinary differential equations, we obtain the solutions for V(ρ) and Z(z). The general solution can be expressed as a linear combination of these solutions.

5. Apply the boundary conditions: Using the boundary conditions, we can determine the coefficients in the general solution by matching the potentials at ρ = Ra and ρ = Rb to Va and Vb, respectively.

6. Obtain the final solution: Once the coefficients are determined, we can combine the solutions for V(ρ) and Z(z) to obtain the final solution for the potential distribution within the region.

Note: The specific form of the solution will depend on the exact boundary conditions and geometry of the capacitor. The above steps provide a general outline for solving Laplace's equation in cylindrical coordinates for a capacitor with two cylindrical shells.

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A system which has neither mass nor energy transfer across the boundary is called: Select one: a. None of them O b. Closed System O c. Open System Od. Isolated System

Answers

An isolated system is a system in which no energy or mass can be transferred through its boundary. It is an idealized concept and doesn't exist in nature. In thermodynamics, an isolated system is considered a closed system that does not allow the transfer of matter or energy through its boundary. So, the correct answer is (d) Isolated System.

Isolated systems are often used in scientific experiments or theoretical analysis. They are useful in studying the properties of a system in the absence of external interactions. Since there are no external interactions, the isolated system is considered to be in a state of thermal equilibrium. This means that the temperature and pressure within the system are uniform and do not change over time.The concept of an isolated system is important in understanding the laws of thermodynamics, especially the first law, which states that the total energy of a closed system is constant. This means that the energy can be transferred from one form to another, but it cannot be created or destroyed. An isolated system provides an idealized example of a closed system, in which the total energy is truly conserved.

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A
meter stick is thrown like a spear past you. You measure its
momentum to be 2 mv. What so you measure its length to be?

Answers

the length of the meter stick, as measured in this scenario, would be 24 units.

Given that the momentum of the meter stick is measured to be 2mv, where m represents the mass of the meter stick and v represents its velocity, we can calculate the length of the meter stick.

The momentum of an object is given by the product of its mass and velocity. In this case, the momentum is 2mv.

To determine the length of the meter stick, we need to consider the moment of inertia. The moment of inertia of a uniform rod (such as a meter stick) rotating about its center is given by (1/12) * m * L^2, where L represents the length of the meter stick.

Since the momentum is measured to be 2mv, we can equate it to the product of the moment of inertia and angular velocity. For a spear-like motion, we can assume the angular velocity to be v/L.

[tex]2mv = (1/12) * m[/tex] * [tex]L^2[/tex] * [tex](v/L)[/tex]

Simplifying the equation, we find:

[tex]2 = (1/12) * L[/tex]

Multiplying both sides by 12:

[tex]24 = L[/tex]

Therefore, the length of the meter stick, as measured in this scenario, would be 24 units.

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An eyeglass lens has one concave surface of radius −0.5 m and convex surfac radius +0.8 m. If the of refraction of the lens is 1.5, find the focal length (in m ). A) −0.375 B) 1.625 C) −2.67 D) −0.615 E) 1.00

Answers

The focal length of the eyeglass lens is -0.615 m. The correct answer is option D).

For a thin lens, the lens maker's formula is given as:

1/f = (n-1) (1/R1 - 1/R2), where f is the focal length of the lens, n is the refractive index of the lens, and R1 and R2 are the radii of curvature of the two faces of the lens. The radii of curvature of the given lens are R1 = -0.5 m and R2 = +0.8 m.

Substituting the given values into the formula, we get:

1/f = (1.5 - 1) [1/-0.5 - 1/0.8]

1/f = 0.5 [-2 + 1.25]

1/f = -0.375

f = -1/(-0.375)

= 2.67 m

However, the question asks for the focal length in meters, which means the answer should be negative since the lens is a diverging lens. Therefore, the correct answer is option D, -0.615 m.

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A 150−μF capacitor is fully-charged when it has 6.1×10^ −3 C on its plates. What is the potential difference across the plates of the capacitor?q = CV o 250 V o 41 V o 0.0024 V o 2.5 V o 4.1 V

Answers

The potential difference across the plates of the capacitor is 40.67 V.

find the potential difference across the plates of the capacitor, we can use the equation q = CV, where q is the charge on the capacitor, C is the capacitance, and V is the potential difference.

Capacitance (C) = 150 μF = 150 ×[tex]10^{(-6)[/tex] F

Charge on the capacitor (q) = 6.1 × [tex]10^{(-3)[/tex] C

Rearranging the equation, we have:

V = q / C

Substituting the given values, we get:

V = (6.1 × [tex]10^{(-3)[/tex] C) / (150 × [tex]10^{(-6)[/tex]F)

V ≈ 40.67 V

The potential difference across the plates of a capacitor is determined by the charge stored on the plates and the capacitance value.

the capacitor has a capacitance of 150 μF (microfarads) and a charge of 6.1 × [tex]10^{(-3)[/tex]C (coulombs). Using the formula V = q / C, where V represents the potential difference, we can calculate it by dividing the charge by the capacitance.

Plugging in the given values, we find that the potential difference is 40.67 V. This means that when the capacitor is fully charged with the specified charge, it maintains a potential difference of around 40.67 volts across its plates.

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