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Answer:

0.2375m/s²

Explanation:

Given

S = 190cm = 1.9m

initial velocity u = 0m/s

Time t = 4.00s

Required

acceleration

Using the equation of motion

S = ut + 1/2at²

Substitute

1.9 = 0+1/2a(4)²

1.9 = 8a

a = 1.9/8

a = 0.2375m/s²

The magnitude of the cart's acceleration is 0.2375m/s²

If two objects crash into each other, they experience collision and both bodies are affected.

Two bodies are said to collide if they hit or crash into each other.

Hence when two objects crash into each other;

For example, two rolling objects going in opposite directions when they hit each other tens to experience a collision.

Hence we can conclude that if two objects crash into each other, they experience collision and both bodies are affected.

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Complete Question

The frictional force of moving Toyota Prius was given as  - 259.7 N. net force was 795 N and determined the force of the engine needed to cause the acceleration

Answer:

The value is [tex]F_e = 1054.7 \ N[/tex]  

Explanation:

From the question we are told that

   The frictional force is  [tex]F_f = -259.7 \ N[/tex]

   The net force is  [tex]F_{net} = 795 \ N[/tex]

Generally the net force is mathematically represented as

     [tex]F_{net} = F_e - F_f[/tex]

=>   [tex]F_e = F_{net} - F_f[/tex]

=> [tex]F_e = 795 - [-259.7][/tex]

=> [tex]F_e = 1054.7 \ N[/tex]    

Answer:

The answer Is erosion!

Hope you do Great!

Explanation:

Answer:

weathering

Explanation:

Answer:

The force is doubled as well.

Explanation:

If you double the spring then the force doubles as well.

If the deflection of the spring is doubled, the force exerted by the spring will also be doubled.

The relationship between the deflection of a spring and the force it exerts is described by Hooke's Law, which states that the force exerted by a spring is directly proportional to its deflection. Mathematically, this can be expressed as:

F = kx

where F is the force exerted by the spring, x is the deflection of the spring, and k is the spring constant, which represents the stiffness of the spring.

If we double the deflection of the spring, then x becomes 2x, and the force exerted by the spring becomes:

F = k(2x) = 2kx

Thus, if the deflection of the spring is doubled, the force exerted by the spring will also be doubled (assuming the spring constant remains constant).

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Answer:The Table should be smooth, hard, and large

Explanation:

Answer:

The sun works by nuclear fission, because there is so much pressure, it makes it vErY hOt. ( About 10,340 degrees Fahrenheit to be exact, or 5,726 degrees Celsius* )

Explanation:

Hope this helps! <3

Answer:

El elevador puede levantar 5.76 toneladas de carga máxima.

Explanation:

De acuerdo a la ley de Pascal:

[tex] p_{1} = p_{2} [/tex]          

[tex] \frac{F_{1}}{A_{1}} = \frac{F_{2}}{A_{2}} [/tex]   (1)

En donde:

F: es la fuerza

P: es la presión

A: es el área

Sabiend que p₁ = 5x10⁵ N/m², tenemos que F₂ es:                              

[tex] F_{2} = p_{1}A_{2} [/tex]       (2)

El área del embolo viene dada por el área de una circunferencia:  

[tex] A_{2} = \pi r^{2} [/tex]    (3)

Introduciendo la ecuación (3) en la ecuación (2) tenemos:

[tex] F_{2} = p_{1}\pi r^{2} = 5 \cdot 10^{5} N/m^{2} \pi (0.20 m)^{2} = 62832 N [/tex]

Dado que el rendimiento es del 90%, la fuerza máxima es:

[tex] F_{2} = 62832 N*0.90 = 56549 N [/tex]

Ahora sabemos que la fuerza del elevador para levantar la carga máxima  es 56549 N y para encontrar el valor de toneladas de la carga máxima que puede levantar el elevador, debemos encontar la fuerza necesaria para levantar 1 tonelada:          

[tex] F = mg = 1000 kg*9.81 m/s^{2} = 9810 N [/tex]  

Finalmente, si para levantar 1 tonelada se debe aplicar una fuerza de 9810 N, y la fuerza total es igual a 56549 N, el numero de toneladas que puede levantar el elevador es:      

[tex] N = \frac{F_{2}* 1 ton}{F} = \frac{56549 N* 1 ton}{9810 N} = 5.76 ton [/tex]

Por lo tanto, el elevador puede levantar 5.76 toneladas de carga máxima.

Espero que te sea de utilidad!

Answer:

The displacement traveled by the elephant is 9600 east

Explanation:

Displacement is defined as an object's change in position which is given by the difference between final and initial location of the object

The displacement of the elephant are, taking east as positive direction of motion;

1) 7.9 km east = + 7.9 km

2) 1.9 km west = -1.9 km

3) 3.6 km east = 3.6 km

The net (sum) displacement of the elephant, ∑Δx is given as follows;

∑Δx = 7.9 km - 1.6 km + 3.6 km = 9.6 km

Given that the sum of the displacement is positive and that 9.6 km = 9600 m, we have;

The displacement traveled by the elephant = ∑Δx =  9600 east.

Answer:

160 peanut butter cups

Explanation:

80 * 2 = 160

Answer:

160

Explanation:

if benny has 2x more than karen and karen has 80 you would multiply 80 by 2 to get 160. therefore benny has 160. hope that helps

Answer:

left

Explanation:

When a force is applied in the opposite direction of motion, it opposes the motion of the object, causing its speed to decrease.

A force is an influence in physics that can change the motion of an object. A force can cause a mass object to change its velocity, or accelerate.

Intuitively, force can be described as a push or a pull. A force is basically a vector quantity as it has both magnitude and direction.

The term "force" has a specific meaning in science. At this level, it is perfectly acceptable to refer to a force as a push or a pull.

Another object applies a force to another. The concept of a force is not restricted to living or non-living things.

To slow a moving object, apply force in the opposite direction to the direction of motion.

Thus, the force should be applied from left to slow down the object.

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At constant velocity, the crate would be in equilibrium, so that Newton's second law tells us

p + (-f ) = 0

where p and f denote the magnitudes of the added pushing force and friction force, respectively.

The friction force is proportional to the normal force by a factor of µ, the coefficient of friction. There's no vertical movement going on, so Newton's second law says

n + (-w) = 0

where n and w are the magnitude of the normal force and the weight of the crate, respectively.

Compute n :

n = w = (25 kg) (9.80 m/s²) = 245 N

Use this and µ = 0.45 to compute f :

f = µ n = 0.45 (245 N) = 110.25 N

Solve for p :

p + (-110.25 N) = 0

p = 110.25 N ≈ 110 N

The force i.e required to move the crate at a constant velocity across the floor is 110 N.

At the same velocity, the crate should be in equilibrium, so as per Newton's second law, the following formula should be used:

p + (-f ) = 0

p means the magnitudes of the added pushing force

f means the friction force

n = w = (25 kg) (9.80 m/s²) = 245 N

Now

force should be

= µ n

= 0.45 (245 N)

= 110.25 N

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Answer:

Two other pennies will be launched, resting only 3 pennies left.

Explanation:

Take "o" as a pennie.

ooo    oo

ooo ← oo

ooooo

oo ← ooo

The process is very similar to what occurs with the pendulum of newton by the law or principle of energy conservation.

In physics, the law or principle of energy conservation states that the total amount of energy in an isolated system remains constant. Such a principle is closely linked to the very definition of energy. An informal way of enunciating this law is to say that energy cannot be created or destroyed: energy can only be transformed from one type to another. The energy from the two pennies will be transferred to the other two pennies from the edge, the energy is then transformed into a kinetic move again.

Answer:

The voltage drop across the unknown resistor is 6 volts.

Explanation:

Given;

the current flowing in the series circuit, I = 1.5 A

number of batteries in the series circuit, = 3

voltage in each battery = 9V

total voltage in the circuit, 3 x 9V = 27 V

number of resistor in the circuit, = 4

R₁ = 3 ohms

R₂ = 6 ohms

R₃ = ?

R₄ = 5 ohms

Determine the total resistance in the circuit by applying Ohms law;

V = IR

R = V / I

R = 27 / 1.5

R = 18 ohms

Determine the unknown resistance;

R₁ + R₂ + R₃ + R₄ = 18 ohms

3 + 6 + R₃  + 5 = 18

R₃ = 18 - 14

R₃  = 4 ohms

The voltage drop across the unknown resistor (R₃  = 4 ohms);

V₃ = IR₃

V₃ = 1.5 x 4

V₃ = 6 volts.

Therefore, the voltage drop across the unknown resistor is 6 volts.

Answer:

A) [tex]\frac{P}{p} + \frac{1}{2} v^2 + gh = k\\[/tex]

B )  53.9 kN/m^2

Explanation:

a) Bernoulli's equation and continuity equation  for a pipe flow

[tex]\frac{P}{p} + \frac{1}{2} v^2 + gh = k[/tex]

[tex]\frac{P}{p}[/tex]  = pressure head

[tex]\frac{1}{2}v^2[/tex] = velocity head

gh = potential head

k = constant

p = density

b) determine the air pressure that must be maintained

Given data :

Discharge rate( R ) = 20 liters/sec ≈ 0.02 m^3

Bore diameter ( d ) = 0.06 m

first we calculate the velocity in the 6 cm  bore

v = [tex]\frac{R }{\frac{\pi }{4} *d^2}[/tex]   ------- (2)

R = 0.02

d = 0.06

insert the given values into equation 2

V = 7.07 m/s

next we apply the Bernoulli's equation by rewriting it as follows

[tex]\frac{P}{pg} + \frac{1}{2g} v^2 + h = k[/tex]

[tex]\frac{1}{2g}v^2[/tex] ( velocity head ) = [tex]\frac{7.07^2}{2*9.81}[/tex]  = 2.55

next  we will apply the use of energy conservation law on the surface of water  in tank and that on the roof :

Note : H1(frictional head loss ) = 45cm = 0.45 m , g = 9.81

applying the energy conservation  law

[tex]\frac{P1}{pg} + \frac{1}{2g} v_{1} ^2 + h1 =[/tex] [tex]\frac{P2}{pg} + \frac{1}{2g} v_{2} ^2 + h2[/tex]

[tex]\frac{P1}{pg}[/tex]  = 0 + 2.55  + 2.5 + 0.45

therefore ; P1 = 9.81 * 5.55 = 53.9 kN/m^2

Answer:

The correct option is;

d. A coil

Explanation:

When a wire, which is an electric conductor is formed into the shape of a coil, and current is allowed to flow through the wire coil, a magnetic field is generated

The magnetic field generated by the electromagnetic coil has direction that consists of flux emanating from one end of the coil and entering the coil from the other end, similar to that of the magnetic field produced by a normal bar magnet.

Answer:

The maximum speed an object can fall in the presence of air resistance

Newton's third law

A coil

Answer:

You would experience physiological changes and a feeling of fear simultaneously.

Explanation:

Cannon–Bard theory of emotions can as well be regarded as Thalamic theory of emotion, whenever the body experience a stimuli, a message will be sent to the brain by the Thalamus then there will be emotions as a result of this a physiological reaction such as trembling, sweating and others would follows. The theory stressed that physical reaction doesn't depends on emotional reaction.

In the case of hiking in the mountains, and one see a mountain lion. If one were to react as the Cannon–Bard theory of emotions proposes, the sequence of events that would characterize One's response is one would experience physiological changes and a feeling of fear, because a message is send to the brain by the Thalamus, then emotion set in and physiological reaction, which explains Cannon–Bard theory.

Answer:

12.4m/s²; 80.99m

Explanation:

Acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time. Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.

Mathematically, acceleration is given by the equation;

[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]

Given the following data;

Initial velocity = 19.5m/s

Final velocity = 50.1m/s

Time = 2.47 secs

Substituting into the equation;

[tex]a = \frac{50.1 - 19.5}{2.47}[/tex]

[tex]a = \frac{30.6}{2.47}[/tex]

Acceleration, a = 12.4m/s²

Solving for the distance covered;

[tex] S = ut + \frac {1}{2}at^{2}[/tex]

Substituting into the values into the equation;

[tex] S = 19.5(2.47) + \frac {1}{2}(12.4)(2.47)^{2}[/tex]

[tex] S = 48.165 + 6.2 *6.1009[/tex]

[tex] S = 48.165 + 32.8256[/tex]

S = 80.99m

Answer:

b.  In fission, the total mass of the reactants equals the total mass of the products.

Explanation:

In a nuclear reaction, the total mass of the reactants does not equal to the total mass of the products.

This is because mass is converted to energy in a nuclear reaction.

Answer:

High run off, low evaporation

Explanation:

High run off and low evaporation causes flood because if evaporation is low, there won't be changing of liquid water to gas or vapor meaning water will be in abundance and if there is much water in abundance it can lead to flooding. High run off can result in flooding if rainfall water overwhelm the capacity of the drainage system i.e the water is more than what the drainage system can carry, it can result in flooding.

Answer:

high runoff, low evaporation, low precipitation

Explanation:

High run off and low evaporation causes flood because if evaporation is low, there won't be changing of liquid water to gas or vapor meaning water will be in abundance and if there is much water in abundance it can lead to flooding. High run off can result in flooding if rainfall water overwhelm the capacity of the drainage system i.e the water is more than what the drainage system can carry, it can result in flooding.

Answer:

v = 42.28 m/s

Explanation:

It is given that,

The horizontal speed of a baseball, [tex]u_x=42\ m/s[/tex]

The pitcher throws the baseball from a height of 1.25 meters, h = 1.25 m

Firstly finding t i.e. the stone takes to reach the ground. Using second equation of motion as follows :

[tex]d=ut+\dfrac{1}{2}at^2[/tex]

a = -g and u = 0

[tex]d=-\dfrac{1}{2}gt^2\\\\t=\sqrt{\dfrac{-2d}{g}} \\\\t=\sqrt{\dfrac{-2\times 1.25}{9.8}} \\\\t=0.5\ s[/tex]

Vertical component of the velocity is :

[tex]v_y=gt\\\\v_y=9.8\times 0.5\\\\v_y=4.9\ m/s[/tex]

Resultant velocity,

[tex]v=\sqrt{v_x^2+v_y^2} \\\\v=\sqrt{42^2+4.9^2} \\\\v=42.28\ m/s[/tex]

So, the resultant velocity of the ball before it hits the ground is 42.28 m/s.

Answer:

42.28 m/s

Explanation:

Answer:

Explanation:

The mass of the crate can be found by using the formula

[tex]m = \frac{f}{a} \\ [/tex]

f is the force

a is the acceleration

From the question we have

[tex]m = \frac{75}{3} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

The Earth's gravity keeps the Moon orbiting us. ... This means gravity makes the Moon accelerate all the time, even though its speed remains constant.

a scientific LAW is the answer

Explanation:

a scientific law is the rule that nature runs by.

Answer:

[tex]10 \: m.[/tex]

Explanation:

[tex]his \: position \:is \: his \: distance \: from \: the \: \\ point \: of \: motion \: and \: is \: given \: by : \\ v = \frac{s}{t} \\ s = vt =2 \times 5 \\ s = 10 \: m.[/tex]