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1. Events involving a disk-shaped nebula occurred before the nuclear fusion that led to the birth of the solar system. Which two statements about the disk-shaped nebula are true?
Gravity caused the disk-shaped nebula to shrink.
Gravity caused the nebula to flatten out in its disk-like shape.
Rotational motion caused the disk-shaped nebula to shrink.
Rotational motion caused the nebula to flatten out in its disk-like shape.
The flattening of the disk caused the speed of rotation to decrease.

2. Match each orbiting body to its attribute.
varies greatly in size from one to the next
has a characteristic glow
usually burns up if it enters Earth's atmosphere
primarily made of hydrogen and helium
Comet
Meteoroid
Gas giant
Asteroid

3. What are two reasons why the terrestrial planets formed closer to the Sun after the supernova event that initiated the formation of the solar system?
They are made of denser objects, which can condense at relatively high temperatures.
They contain lightweight materials that condense in areas of relatively low radiation.
They are made of heavier elements, which have a stronger gravitational attraction to the Sun.
They are relatively small in size, so the Sun’s gravity has a strong influence on them.
They have gaseous surfaces, which is ideal in those areas of high radiation near the Sun.

The dust, accumulated at the time of the formation of the solar system that are  preserved in asteroids, meteoroids, and meteorites are called chondrules.

The solar system is composed of the earth and the planets. The solar system was formed millions of years ago.

The dust, accumulated at the time of the formation of the solar system that are  preserved in asteroids, meteoroids, and meteorites are called chondrules.

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The Properties of good conductor are given below:

Explanation:

1.It posses very low resistance or specific resistance.

2.It posses more conductance and there by conducts electricity readily through it.

3.It is a good conductor of heat.

4.It is highly resistance to corrosion by liquid.

5.It must be malleable and ductile.

6.It must be flexible.

7.It should not react with climatic conditions.

8.It can be drawn in very fine wires.

Answer:

The pressure of the gas will increase

Explanation:

When gas is put into a container, for example, a balloon, the gas expands to fill the space it can occupy. Since gas is not a solid or a liquid, its particles are all over the place - they are constantly moving and vibrating. As such, when too much gas is blown into a balloon, it will pop. So, when the volume of the container decreases, the pressure of the gas will increase the smaller it gets. Vice versa, the greater the space, the less pressure that will be present in the container.

True,Voltage is only produced when the wire is moving but not when the magnet is moving.

The physical interplay of electric charges, magnetic moments, and the electromagnetic field is known as electromagnetism.

The electromagnetic field can be static, moving slowly, or forming waves. Electromagnetic waves are commonly referred to as light and are subject to optics laws.

True,Voltage is only produced when the wire is moving but not when the magnet is moving.

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The lower limit that could be used to determine the position of each object along the direction of the velocity is 1.136 x 10⁻³ m.

The uncertainty in the position of the electron is calculated as follows;

[tex]\Delta x = \frac{h}{4\pi m\Delta v}[/tex]

where;

[tex]\Delta x = \frac{6.63 \times 10^{-34} }{4\pi \times 9.11 \times 10^{-31} \times 0.051} \\\\\Delta x = 1.136 \times 10^{-3} \ m[/tex]

Thus, the lower limit that could be used to determine the position of each object along the direction of the velocity is 1.136 x 10⁻³ m.

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Answer:

the answer is equal to the microwave gamma rays visible light x-rays.

Answer:

Length -> meter

Mass -> kilogram

Time -> second

g for gram

mg for milligram

t for time

μm for micrometer

ms for millisecond

300cm = 3m

500g = 0.5kg

1500m = 1.5km

250ms = 0.25s

3.65×10^4g = 36.5kg

The vessel's average speed for the entire journey will be 5.86 knots. The area of the distance-time graph shows the velocity.

Distance is a numerical representation of the distance between two objects or locations.

Distance can refer to a physical length or an estimate based on other factors in physics or common use. |AB| is a symbol for the distance between two points A and B.

The given data in the problem is;

Distance travelled 1 (D₁)= 6 nautical miles

Velocity (V₁) 8 knots.

Time (T₁)=

Distance travelled 2 (D₂)=5 nautical miles,

Time taken(T₂)=45 minutes=0.75 hour

Time taken(T₃)=30 minutes

Time for anchor 1 (t₁)=1 hour

Time for anchor 2(t₂)=0.5 hour

Time to sailing back to port(t₄) = 1 hour

The time for the first phase of motion;

[tex]\rm d = v\times t \\\\ t_1= \frac{D_1}{v} \\\\ t_1= \frac{6}{8} \\\\ t_1= 0.75 \ houe[/tex]

The average speed is found as;

[tex]\rm V_{avg}= \frac{Total \ distance }{Total \ time } \\\\ \rm V_{avg}= \frac{6+5+6+5}{0.75+0.5+1+0.5+1} \\\\ V_{avg}=5.866 \ knots[/tex]

Hence, the vessel's average speed for the entire journey will be 5.86 knots.

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Answer:

when two electrons are in close proximity Each atom's electron begins to detect the proton of the other atom. As a result, it is attracted to not just its own proton, but also the proton of the other atom.

The value of change in kinetic energy, when fish with mass 0. 65 kg is leaping to the right at 15 m/s, is 93.1 J.

Kinetic energy is a type of energy, which a body is posses due to its motion. The kinetic energy of a body can be found with the following formula,

[tex]KE=\dfrac{1}{2}mv^2[/tex]

Here, (m) is the mass of the body, and (v) is the speed of the body.

When the two objects collides, then the initial collision of the two body is equal to the final collision of two bodies by the law of conservation of momentum.

[tex]m_1u_1 + m_2u_2 = (m_1+m_2)v[/tex]

Here, (m) is the mass, (u) is initial velocity before collision, v is final velocity after collision and (subscript 1,2) are used for fish 1 and 2.

The mass of the first fish is 0. 65 kg. This fish leaping to the right at 15.0 m/s collides inelastically with another fish with mass 0.950 kg leaping to the left at 13.5 m/s. Put the values,

[tex]m_1u_1 + m_2u_2 = (m_1+m_2)v\\0.65\times15 +0.95\times(-13.5) = (0.65 + 0.95)\times v[/tex]

The value of initial velocity of the second fish is taken negative as it is leaping to the left.

[tex]0.65\times15 +0.95\times(-13.5) = (0.65 + 0.95)\times v\\v=-\dfrac{3.075}{1.6}\\v=-1.9219\rm\; m/s[/tex]

This is the final velocity. Now to find the change in kinetic energy use the formula of kinetic energy,

[tex]\Delta KE=\dfrac{1}{2}(0.65)(12-(-1.9219))^2\\\Delta KE=93.1\rm\; J[/tex]

Thus, the value of change in kinetic energy, when fish with mass 0. 65 kg is leaping to the right at 15 m/s, is 93.1 J.

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Answer:

60

Explanation

Dont judge me but I convert 1.3 hours to 78 minutes, then divide with 3.0 and we end up with 60C

The amount of charge that passes through a 3.0 amp television in 1.3 hours would be 14040 Coulombs.

Charged material experiences a force when it is exposed to an electromagnetic field due to the physical property of electric charge. You can have a positive or negative electric charge.

I = Q / T

As given in the problem, we have to find out what amount of charge passes through a 3.0 amp television in 1.3 hours.

Let us first convert the time period of hours into seconds

1 hour = 3600 seconds

1.3 hours = 1.3 × 3600 seconds

               =  4680 seconds

By using the above relation between electric current and electric charge

and by substituting the respective values of the charge and the time period

I = Q / T

3 = Q / 4680

Q = 3 × 4680

   = 14040 Coulombs

Thus, the amount of charge that passes through a 3.0 amp television in 1.3 hours would be 14040 Coulombs.

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The value of maximum voltage, when the capacitor can withstand a peak voltage of 670 v is 47.6 volts.

Resonance frequency is the natural frequency of an particle or object. At this frequency, the object tries to vibrate at higher amplitude. It can be calculated with the following formula:

[tex]f=\dfrac{1}{2\pi LC}[/tex]

Here, L is the induction and C is the capacitance.

Let for an L-R-C circuit, the value of resistance is 400 ohm, induction is 0.380 Haney and capacitance is 1.20×10⁻² μF.

Put the values in above formula,

[tex]f=\dfrac{1}{2\pi(0.380)(1.20\times10^{-8})}\\f=2356.8\rm\; Hz[/tex]

The capacitor can withstand a peak voltage of 670 v. Use the following formula to find the value of current as,

[tex]I=2\pi fC\times Vc\\I=2\pi (2356.8)(1.20\times10^{-8})\times 670\\I=0.119\rm\; A[/tex]

The value of resistance is 400 ohms. Thus, the voltage is,

[tex]V=IR\\V=(0.119)(400)\\V=47.6\rm\; V[/tex]

Thus, the value of maximum voltage, when the capacitor can withstand a peak voltage of 670 v is 47.6 volts.

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Answer:

15 kg

Explanation:

KE = 1/2 * m * v²   ⇒  m = (2*KE) / v²

m = (2*480) / 8²

m=15 kg

Answer:

At the topmost point where the velocity has only horizontal component whereas the acceleration is vertical.

Explanation:

There is only a horizontal component of velocity at the ap3x of the projectile, and acceleration is vertically downwards owing to gravitation, therefore velocity and acceleration are perpendicular to one another.

Answer:

number 1 is ( Some objects fall faster than other objects due to air  resistance . If there is no air resistance , then all objects will fall at the same rate.)  number two is (How do parachutes use air resistance to help skydivers land safely (page 3)? The air resistance overwhelms  the doward force of gravity.) Explanation:

Answer:V=13500m/s

As

V=fλ

Where v is velocity, f is frequency and λ is the wavelength

f=27hz or 27/s

λ=0.50km=0.50*1000m=500m

Putting given values in the formula

V=(27/s)*(500m)

V=13500m/sss

The magnitude of the change in momentum of the driver is 3900kgm/s.

Hence option D) 3900 kg • meters per second is the correct answer.

Momentum is simply the product of the mass of an object and its velocity.

Its is expressed as;

P = m × v

Where m is the mass of the object and v is its velocity.

Given the data in the question;

We substitute the given values into the expression above to determine the initial momentum of the driver before he was brought to rest.

P initial = m × v

P initial = 125kg × 31m/s

P initial = 3875 kgm/s ≈ 3900kgm/s

Now, as the driver is brought to rest, final velocity becomes zero

P final = 125kg × 0

P final = 0

This means that the change in momentum of the driver is his initial momentum which is 3900kgm/s.

Therefore, the magnitude of the change in momentum of the driver is 3900kgm/s.

Hence option D) 3900 kg • meters per second is the correct answer.

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Answer:

D for edge

Explanation:

GO GO GO TRUST ME

As altitude increases, air pressure decreases. hence option C is correct.

It is pressure exerted by the weight of the atmosphere at sea level. its value is 101,325 Pascal which we call it as 1 atmospheric pressure expressed as 1 atm. i.e. 1 atm = 101,325 N/m².

Like water has pressure when we go long inside the water, our atmosphere has also pressure from top to surface of the earth.

There are different layers of atmosphere from bottom to top which are Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere.

Each layer has its own range and weight.

When we are on the surface of the earth, all layers of atmosphere will apply pressure. but when we increase altitude(height), the number layers reduces and its weight too.

Hence as altitude increases, air pressure decreases.

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The amount of exhaust heat discharged per hour from the plant which produces electric energy at the rate of 1. 5 gw, is 9.36×10¹⁹ J/h.

The heat is discharged per hour is equal to the different of total power and actual power.

The plant produces electric energy at the rate of 1. 5 gw. Let assume the efficiency of this power plant is 64% between the temperature of 660 degree C to 330 degree Celsius.

Thus, the maximum efficiency is,

[tex]\eta_{max}=1-\dfrac{660+273}{330+273}\\\eta_{max}=0.55[/tex]

The total power is,

[tex]P_t=\dfrac{P_A}{\eta_{max}\times0.64}\\P_t=\dfrac{1.5}{0.55\times0.64}\\P_t=4.26\rm\; GW[/tex]

Thus, the heat discharged per hour is,

[tex]Q=4.26-1.5\\Q=2.76\text{GW}\\[/tex]

Multiply the value with 3600 to convert it in s/h,

[tex]Q=2.76\times10^9\times3600\text{ J/h}\\Q=9.36\times10^{19}\text{ J/h}\\[/tex]

Thus, the amount of exhaust heat discharged per hour from the plant which produces electric energy at the rate of 1. 5 gw, is 9.36×10¹⁹ J/h.

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The ideal mechanical advantage will be 8.017. The ideal mechanical advantage value may be grater than the actual value of mechanical advantage.

Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtained efficiency of  forces in levers and pulley.

The ideal mechanical advantage is found as;

[tex]\rm IMA = \frac{d \pi}{l} \\\\ \rm IMA = \frac{0.812 \times \pi}{0.318} \\\\ IMA=8.017[/tex]

The ideal mechanical advantage will be 8.017.

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pH water = 7 = [H⁺] = 10⁻⁷

Mr. Galonski one hundred times more acidic than water = 100 times more H⁺ = 10⁻⁵ ⇒ pH = 5

Baron von Base has a pH of 11

The furthest from neutral (pH=7) on the pH scale = Baron von Base

The question is maya most likely trying to answer is, how does the thickness of the wire affect the strength of an electromagnet?

From the experimental set-up by maya, we can determine the effect of thickness of wire on strength of electromagnet.

R ∝ 1/A

where;

As the thickness of the wire increases, the area of the wire increases and the resistance of the wire will decrease. As the resistance of the wire decreases, the current flowing in the wire increases as well.

Thus, the increase in the thickness of a wires increases, the strength of an electromagnet.

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Answer:

A

Explanation:

The count of the number of tools is fundamental because it allows us to design a suitable experimental procedure.

An experimental procedure is a step of the scientific method based on a process to validate or reject our working hypothesis.

The experimental procedure needs to have into account the different tools required for the experiment to be carried out by the researcher.

In conclusion, the count of the number of tools is fundamental because it allows us to design a suitable experimental procedure.

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The conclusion v₁=v₂ can not be made. Let u=(1,1,1),v₁=(2,3,-5),v₂=(4,-1,-3). The dot product of u.v₁=uv₂ is satisfied,but v₁≠v₂.The correct answer is c.

The dot product, also known as the scalar product, is an algebraic operation that yields a single integer from two equal-length sequences of numbers.

The dot product of two vectors' Cartesian coordinates is commonly used in Euclidean geometry.

Because there may be more than the 1 vectors satisfying the expression.

[tex]\rm uv_1 = 1 \times 2 +1 \times 3 +1 \times(-5)=0[/tex]

[tex]\rm uv_2= 4-1-3 =0[/tex]

The v₁ is not found equal to the v₂.

The conclusion v₁=v₂ can not be made. Let u=(1,1,1),v₁=(2,3,-5),v₂=(4,-1,-3). The dot product of u.v₁=uv₂ is satisfied,but v₁≠v₂.The correct answer is c.

Hence, the correct answer is c.

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The force advantage of the direction changing pulley shown  is 1. The correct option is b.

Force is the mechanical physical quantity. The force advantage is equivalent to the mechanical advantage equal to the ratio of output to the input force.

In the single fixed pulley, there is only one rope segment that pulls up on the load, so,

The force advantage is

F.A = 50 N / 50 N  = 1

Thus, the force advantage of the direction changing pulley shown  is 1. The correct option is b.

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