Some microwaves operate using 1100 W of electrical power. If the current in the outlet is 20 A, what voltage is needed?

Explanation:

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A component that runs parallel to the string and one that does. The following will make up the weight component moving in the string's direction: mg cos(θ) The weight's component that is parallel to the string is. — mg sin(θ)

A numerical value known as the coefficient of friction (fr) is created by dividing the resistive force of friction (Fr), which pushes the objects together, by the normal or perpendicular force (N), which pushes them apart. It is represented by the formula below: fr = Fr/N.

The direction of the object's pull and the length of the provided rope both contribute to tension. It's also crucial to remember that Newton is the SI unit for tension.

Therefore, The horizontal tension in the L wire can be found by Mgcos (theta) so  Tmax = Mgcos (theta Tmax / (g cos(theta)) = M.

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The wavelength of light must be absorbed to accomplish photosynthesis process is blue light.

Photosynthesis is a process in which green plants, blue-green algae capture light energy and convert into chemical energy. Photosynthesis depends on absorption of light by pigments in the leaves.

Wavelength is distance between successive crests of a wave especially in electromagnetic waves. Most important is the chlorophyll a, which is the universal pigment but there are several accessory pigments which helps in the process of photosynthesis.

Plant pigment absorb light in the wavelength range of 700 nanometer to 400 nanometer. It is said to be as photo-synthetically active radiation. Violet and Blue have the shortest wavelength and most energy while red has the longest wavelength and carries the least amount of energy.

One photon with just right amount of energy bump an electron between orbitals and can excite a pigment. This is why different pigments absorb different wavelength of light.

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The complete question is,

What is the wavelength of light that must be absorbed to accomplish this photosynthesis process?

Answer:

Instead, photosynthetic organisms contain light-absorbing molecules called pigments that absorb only specific wavelengths of visible light, while reflecting others. The set of wavelengths absorbed by a pigment is its absorption spectrum.

It is not possible to determine the time required for consolidation to reach 40% with only partial drainage information.

The time required for consolidation to reach 40% cannot be determined with only partial drainage information. The consolidation process depends on various factors such as soil type, initial void ratio, and drainage conditions. Partial drainage at the bottom only will result in a longer consolidation time compared to full drainage at the top and bottom. The degree of consolidation achieved will depend on the time factor, hydraulic gradient, and soil parameters. Therefore, without knowing these parameters, it is not possible to calculate the time required for consolidation to reach 40%. A comprehensive soil analysis and laboratory testing are necessary to determine the appropriate time factor for consolidation of a specific soil type under different drainage conditions.

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Answer:

meter,kilometer,centimeter and millimeter

Explanation:

The maximum speed of the roller coaster at that drop is 26.34 m/s.

The maximum speed of the roller coaster at that drop is calculated by applying the  principle of conservation of energy as follows;

Maximum potential energy of the roller coaster at top = Maximum kinetic energy of the coaster at the bottom

mgh = ¹/₂mv²

2gh = v²

v = √ ( 2gh)

where;

v = √ ( 2 x 9.8 x 35.4)

v = 26.34 m/s

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Objects were able to grow larger in the outer solar system due to the presence of ices that allowed for the formation of solid planetesimals.

The current theory of solar system formation, known as the nebular hypothesis, suggests that the solar system formed from a rotating cloud of gas and dust that collapsed under gravity and began to spin faster, flattening into a disk shape. In the inner solar system, only metals and rocky materials could condense and form solid objects due to high temperatures. In contrast, in the colder outer solar system, volatile ices could also condense and form solid objects, allowing outer planetesimals to grow larger and accumulate more mass, eventually forming the giant planets.

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The acceleration of wheel will last for 1.25 sec.

Angular acceleration refers to as change of angular velocity per unit of time. It is usually expressed in radians/sec². The direction of the acceleration vector is perpendicular to the plane in which the rotation occurs. As the angular velocity(ω) increases clockwise, the angular acceleration rate moves away from the observer. If the angular velocity increase is counterclockwise, the angular acceleration vector points in the direction of the viewer. In SI units, angular acceleration is measured in radians per second (rad/s²) and is commonly expressed as alpha (α).

For the given case,

Using equation of motion:

ω₂² = ω₁² + 2αθ

6² = 2² + 2 × α × 5

36  = 4 + 10α

10α = 32

α = 3.2 m/s²

Acceleration:

α = (ω₂ - ω₁)/t

t = (ω₂ - ω₁)/α

t = (6 - 2)/3.2

t = 1.25 sec

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Answer:

North star, its close to our solar system but not in it. hope this helps

The time it takes for the car to fall from a certain height would not be affected by the time it takes for the ball to fall, even if the car's velocity were doubled.

If the car's velocity were doubled, the time it takes for the car to fall would not be affected by the time it takes for the ball to fall. This is because the time taken for an object to fall from a certain height is determined by the acceleration due to gravity and the distance from the ground, but not by the object's initial velocity.

The acceleration due to gravity is constant, which means that the time taken for an object to fall a certain distance is also constant. This means that the time taken for the ball to fall and the car to fall from the same height would be the same, regardless of the car's velocity.

This can be explained by the equation of motion for a falling object:

d = 1/2gt²,

where d is the distance from the ground, g is the acceleration due to gravity, and t is the time taken to fall.

Since the acceleration due to gravity is constant, the time taken for the car and the ball to fall the same distance would be the same, regardless of their initial velocity.

Therefore, if the car's velocity were doubled, the time it takes for the car to fall would be the same as before, but it would be moving faster when it hits the ground.

In conclusion, the time it takes for the car to fall from a certain height would not be affected by the time it takes for the ball to fall, even if the car's velocity were doubled.

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When the "volts/div" dial is set to 0.2 and you try to view a 6-volt signal, it is not visible because the signal exceeds the vertical display range. To see the signal, you should turn the dial to 2 volts/div.

When you try to look at a 6-volt signal with the "volts/div" dial set to 0.2, you don't see anything because the signal is too large to be displayed properly on the screen.

The "volts/div" setting determines the vertical scaling or sensitivity of the oscilloscope, indicating the number of volts represented by each vertical division on the display.

In this case, with the "volts/div" set to 0.2, each vertical division represents only 0.2 volts. Since the signal has an amplitude of 6 volts, it would require 30 divisions to display the full signal on the screen (6 volts / 0.2 volts/div = 30 divisions).

However, most oscilloscopes have a limited number of vertical divisions available on the screen, typically around 8 to 10 divisions.

Therefore, with the "volts/div" set to 0.2, the signal exceeds the vertical display range of the oscilloscope, and you won't see anything.

To properly view the 6-volt signal, you should turn the "volts/div" dial to a larger value. If you increase it to 2 volts/div, each vertical division would represent 2 volts.

This setting would allow you to see the full 6-volt signal within the available vertical display range (6 volts / 2 volts/div = 3 divisions).

On the other hand, setting the "volts/div" dial to 0.02 volts/div would make the vertical scaling too small.

It would make the signal appear compressed, with a reduced amplitude relative to the screen size, and potentially make it harder to observe and interpret the details of the signal accurately.

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Answer:

non of the choice are correct

Explanation:

because waves look like waves only

Answer:

I would probably say C to be completely honest

Explanation:

If you agree make sure to give me a like

We know that the energy of electromagnetic radiation is given by:

where E is the energy, h is Planck's constant and f is the frequency. Before we can use this formula we need to convert the amount of energy given to J so let's do that:

Now that we have the energy of the radiation, we plug it on the energy equation and solve for the frequency:

Therefore, the frequency of the cell phone electromagnetic radiation is:

Now that we know the frequency we just need to remember that the frequency and wavelength of electromagnetic radiation are related by:

Then we have:

Therefore, the wavelength is 0.111 m

Mars has a gravitational field that is roughly 3.71 m/s² strong.

Newtons per kilogramme (N/kg) are used to measure the gravitational field strength (g). At or near the surface, the gravitational field strength of the Earth is 10 N/kg. This implies that an item will experience 10 N of force for every kilogramme of mass.

To get the gravitational field strength, use the following equation:

g = G*M/r²

where:

g = gravitational field strength

G = gravitational constant = 6.6743 × 10⁻¹¹ N(m/kg)²

M = mass of Mars

r = radius of Mars

Plugging in the values:

g = (6.6743 × 10⁻¹¹ N(m/kg)² * 6.39×10²³ kg) / (3.3895×10⁶ m)²

g = 3.71 m/s²

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Answer:

Explanation:

we know there is 24hr in a day so 4 day means 24x4 hrs which is 96hrs

now 1 hr have 60 min and 1 min is 60 sec. so, 1 hr have (60sec x 60) since 60 second is 1 min and 1 hr is 60 times that.

1hr = 60x60 =3600sec.

we know 4 day have 96hrs, so if we multiply 3600 with 96 we get it in seconds.

3600x96 = 345600 seconds.

Gabi has plans with her friends to go to a concert on her birthday in 4 days. Gabi has 345,600 seconds left to wait for her birthday concert.

Gabi determines how many seconds she has left to wait for her birthday concert.

There are 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute. So, to calculate the total number of seconds in 4 days:

Total Seconds = 4 days × 24 hours/day × 60 minutes/hour × 60 seconds/minute

Total Seconds = 4 × 24 × 60 × 60

Total Seconds = 345,600 seconds

Therefore, Gabi has 345,600 seconds left to wait for her birthday concert.

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The financial advantage of discontinuing the Beta product line would be a disadvantage of $9,840,000. The financial advantage of buying 100,000 units from the supplier instead of making them would be an advantage of $4,700,000.The financial advantage of buying 75,000 units from the supplier instead of making them would be an advantage of $3,525,000.

To calculate the financial advantage or disadvantage of discontinuing the Beta product line, we need to compare the costs and revenues associated with the current situation and the proposed scenario.

Currently, the company produces and sells 80,000 Betas and 100,000 Alphas. If the Beta product line is discontinued, the sales representatives can increase Alpha sales by 13,000 units.

In the current situation:

Revenue from Beta sales = 80,000 units × $162 = $12,960,000

Revenue from Alpha sales = 100,000 units × $240 = $24,000,000

Total revenue = $12,960,000 + $24,000,000 = $36,960,000

In the proposed scenario:

Increased Alpha sales = 113,000 units × $240 = $27,120,000

Therefore, the financial advantage or disadvantage can be calculated as:

Financial Advantage = Revenue in proposed scenario - Revenue in current situation

Financial Advantage = $27,120,000 - $36,960,000 = -$9,840,000

The financial advantage of discontinuing the Beta product line would be a disadvantage of $9,840,000.

To determine the financial advantage or disadvantage of buying 100,000 units from the supplier instead of making them, we need to compare the costs of production with the purchase cost from the supplier.

Cost of producing 100,000 Alphas:

Direct materials cost = 100,000 units × $35 = $3,500,000

Direct labor cost = 100,000 units × $48 = $4,800,000

Variable manufacturing overhead = 100,000 units × $27 = $2,700,000

Traceable fixed manufacturing overhead = 100,000 units × $35 = $3,500,000

Variable selling expenses = 100,000 units × $32 = $3,200,000

Common fixed expenses = 100,000 units × $30 = $3,000,000

Total cost of producing 100,000 units = $3,500,000 + $4,800,000 + $2,700,000 + $3,500,000 + $3,200,000 + $3,000,000 = $20,700,000

Cost of buying 100,000 units from the supplier = 100,000 units × $160 = $16,000,000

Therefore, the financial advantage or disadvantage can be calculated as:

Financial Advantage = Cost of producing - Cost of buying

Financial Advantage = $20,700,000 - $16,000,000 = $4,700,000

The financial advantage of buying 100,000 units from the supplier instead of making them would be an advantage of $4,700,000.

Similarly, to determine the financial advantage or disadvantage of buying 75,000 units from the supplier instead of making them, we follow the same calculations as in question 9, but with the quantities adjusted accordingly.

Cost of producing 75,000 Alphas:

Direct materials cost = 75,000 units × $35 = $2,625,000

Direct labor cost = 75,000 units × $48 = $3,600,000

Variable manufacturing overhead = 75,000 units × $27 = $2,025,000

Traceable fixed manufacturing overhead = 75,000 units × $35 = $2,625,000

Variable selling expenses = 75,000 units × $32 = $2,400,000

Common fixed expenses = 75,000 units × $30 = $2,250,000

Total cost of producing 75,000 units = $2,625,000 + $3,600,000 + $2,025,000 + $2,625,000 + $2,400,000 + $2,250,000 = $15,525,000

Cost of buying 75,000 units from the supplier = 75,000 units × $160 = $12,000,000

Therefore, the financial advantage or disadvantage can be calculated as:

Financial Advantage = Cost of producing - Cost of buying

Financial Advantage = $15,525,000 - $12,000,000 = $3,525,000

The financial advantage of buying 75,000 units from the supplier instead of making them would be an advantage of $3,525,000.

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In a Zigbee device, the layer responsible for detecting the presence of an RF (Radio Frequency) signal in the currently selected channel is the Physical Layer (PHY).

The PHY layer in Zigbee is responsible for managing the transmission and reception of RF signals. It handles functions such as channel selection, modulation, demodulation, and signal detection. When a Zigbee device is operating in a specific channel, the PHY layer continuously monitors that channel for incoming RF signals. It performs energy detection, which involves measuring the power level of the received signal. By analyzing the received signal strength, the PHY layer can detect the presence of an RF signal in the selected channel.

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The question involves a disk with mass, radius, and moment of inertia, along with a string wrapped around it. One end of the string is attached to a fixed support, and the disk is allowed to fall.

In this scenario, the disk is initially held in a vertical position with the string wrapped around it. When the disk is released, it starts to fall due to the force of gravity. The key factors to consider in this situation are the mass and radius of the disk, as they determine the gravitational force acting on it, and the moment of inertia, which affects the rotational motion of the disk. The string plays a crucial role in transferring the force from the falling disk to the fixed support.

Unique keywords in the explanation are "fall," "moment of inertia," "gravitational force," and "rotational motion." These terms highlight the key elements of the question, including the motion of the falling disk, the influence of the moment of inertia on its rotation, the gravitational force as a driving factor, and the involvement of the string in transmitting the force to the fixed support.

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The probability of an antiproton, of energy E, crossing a potential energy barrier Vo(x), where E < Vo(x). The probability of an electron of the same energy E passing through the above potential energy barrier is equal to 0.2.\(exp\ [-\sqrt{[\frac{h\ ln (0.2)^2}{32 m (Vo(x)-E)}} ]]\)

The probability of an antiproton crossing an electric potential energy barrier (Vo(x)), where E < Vo(x) is given by:

\(P(E) = exp(-2\sqrt{[2m\frac{(Vo(x)-E)}{h}]})\)

Where, h is the Planck constant and m is the mass of the particle. To calculate the probability of an electron passing through the same energy barrier, we are given that P(E) = 0.2. The probability of an antiproton crossing the same energy barrier is:

       \(P(E) = exp(-2\sqrt{[2m\frac{(Vo(x)-E)}{h}]})\)

The energy of the antiproton is given as E. Therefore, substituting this value in the above expression, we have:

\(P(E) = exp(-2\sqrt{[2m\frac{(Vo(x)-E)}{h}]})\)

As per the given condition, the probability of an electron passing through the same energy barrier is 0.2. Therefore, substituting this value in the above expression, we have:

\(P(E) = exp(-2\sqrt{[2m\frac{(Vo(x)-E)}{h}]})\)

Taking the natural logarithm on both sides, we have:

   \(ln0.2 = -2\sqrt{[2m\frac{(Vo(x)-E)}{h}]}\)

Taking the square of both sides, we have:

\(4\ ln 0.2 = 8 [2m\frac{(Vo(x)-E)}{h}]\)

Simplifying, we get:

\(Vo(x) - E = (\frac{h}{8m}) \frac{[ln 0.2]^2}{2}\)

\(Vo(x) = E + (\frac{h}{8m}) \frac{[ln 0.2]^2}{2}\)

Therefore, the probability of an antiproton crossing the electric potential energy barrier \((Vo(x))\), where  is given by:

   \(P(E) = exp(-2\sqrt{[2m\frac{(Vo(x)-E)}{h}]})\)

Substituting the value of Vo(x), we get:

\(P(E) = exp(-2\sqrt{[2m\frac{(h)}{8m}\frac{[ln 0.2]^2}{2h}{(Vo(x)-E)}]})\)

Simplifying, we get:

\(P(E) = exp[-\sqrt{[\frac{(h ln 0.2)^2}{32m}(Vo(x)-E)]}]\)

Therefore, the required probability is \(exp[-\sqrt{[\frac{(h ln 0.2)^2}{32m}(Vo(x)-E)]}]\).

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Answer:

A

Explanation:

At constant speed, acceleration=0

From the formula, Fnet=ma (Resultant force= mass x acceleration), sub a=0

Fnet=0

Since the resultant force=0, the pushing force is equal to the frictional force

The only form of heat transfer that can operate in a vacuum is radiation.                                                                                                      

Unlike convection and conduction, which require a medium to transfer heat, radiation is the transfer of heat through electromagnetic waves. This means that even in the absence of air or any other medium, heat can still be transferred through radiation.
Instead, heat is transferred through electromagnetic waves, primarily in the form of infrared radiation. In a vacuum, where there is no matter to conduct or convect heat, radiation remains the sole method for heat transfer, enabling heat to travel across vast distances in space.

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Hi there!

For a straight wire, we can use Ampère's Law to find its magnetic field at various distances from the wire.

Using the equation:
\(\oint B\cdot dl = B \cdot l = \mu_0 i\)

B = Magnetic field strength (T)
l = length of path of integration (m)

μ₀ = Permeability of free space (4π × 10⁻⁷ Tm/A)
i = Enclosed current (2.24 A)

This is a dot-product, so the cosine of the angle between the magnetic field and the path of integration is considered. However, since we are always tangential to the magnetic field, cos(0) = 1. We can simplify to B * l.

The length of the path of integration is equivalent to the circumference of a circle produced with a radius 'r' as a straight, long wire creates circular magnetic fields around the wire.

Therefore:
\(C = 2\pi r\\\\B \cdot 2\pi r = \mu_0 i\)

Solve for 'B'.

\(B = \frac{\mu_0i}{2\pi r}\)

1.

Plug in the given values and solve for the strength of the magnetic field at r = 0.022m.

\(B = \frac{(4\pi \times 10^{-7})(2.24)}{2\pi (0.022)} = \boxed{20.364 \mu T}\)

Using magnetic hand rules, a left-flowing (-x axis) current will result in a magnetic field of this strength INTO THE PAGE (or +y-axis if we assign the +/- z-axis to be up/down respectively) above the wire.

2.

Since B ∝ 1/R, if we double 'R', B will be halved.

Therefore:
\(B_{2R} = \frac{B_R}{2} = \frac{20.364 \mu T}{2} = \boxed{10.182 \mu T}\)

3.

The same logic applies. If we increase 'R' by 10x, B will decrease by 10x.

\(B_{10R} = \frac{B_R}{10} = \frac{20.364\mu T}{10} = \boxed{2.0364 \mu T}\)

However, since this point is BELOW the wire, the direction of the magnetic field differs. Using hand rules, the field would point OUT OF THE PAGE, or to the -y-axis.

Answer:

A. It is made of tissues that can conduct electricity, a required function in a system.

Explanation:

The nervous system helps all the parts of the body to communicate with each other. It also reacts to changes both outside and inside the body. The nervous system uses both electrical and chemical means to send and receive messages.

Answer:

D

Explanation:

it is D because a system needs to manage a large organism like us to allow us to live, therefore, needs to work with other systems to keep us alive

The charge of a particle in a magnetic field can be determined by measuring the force, velocity, and strength of the magnetic field using the Lorentz force equation. There are various methods to measure the charge, such as using a particle accelerator or mass spectrometer.

In a magnetic field, charged particles experience a force that can be used to determine their charge. This force, known as the Lorentz force, is given by the equation F = q(v x B), where F is the force, q is the charge of the particle, v is the velocity of the particle, and B is the strength of the magnetic field.

To determine the charge of a particle in a magnetic field, you can measure the velocity of the particle and the strength of the magnetic field, and then measure the force experienced by the particle. By rearranging the equation F = q(v x B), you can solve for the charge q.

It is important to note that the Lorentz force only applies to charged particles that are in motion. If the particle is stationary, it will not experience any force in a magnetic field.

In practice, there are many ways to measure the charge of a particle in a magnetic field, such as using a particle accelerator or a mass spectrometer. These techniques involve manipulating the motion of the particle in a controlled way and measuring the resulting forces and velocities to determine its charge.

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Complete question:

How can I know the charge of a particle in a magnetic field?

We've put together a step-by-step explanation of how people hear—from the moment sound waves arrive to the outer ear, then travel through the middle and inner ear and transform into meaningful signals sent on to the brain. Our brain uses these signals to organize and communicate with the external world.

The statement that best illustrates that the light behaves like particles is "light bounces off a white cement sidewalk".

Light is electromagnetic radiation which can be seen by Bare eyes. It is the part of the electromagnetic spectrum.

Light is a particulate matter the reflection of light by striking to a surface is the best example to understand its nature.

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Answer:

The answer is below

Explanation:

1) The resultant force of two forces acting in the same direction is equal to the sum of the two magnitudes. Therefore:

Resultant force = 10N + 7N = 17 N

2) The resultant force(R) between two forces A and B at an angle θ is given by:

\(R=\sqrt{A^2+B^2+2ABcos\theta} \\\\R=\sqrt{7^2+10^2+2(7)(10)cos(60^o)} =14.8^o\\\\\)

3) The resultant force (R) between perpendicular forces (90°) A and B is given by:

\(R=\sqrt{A^2+B^2}\\ \\R=\sqrt{7^2+10^2}=12.2\ N\)

Answer:

Explanation: The density of gas differentiates all the varieties of gas present in the atmosphere.

HYDROGEN- it is a lighter gas having a lesser density.

For example, a hydrogen balloon displaces the air around it thus making it rise.

CARBON DIOXIDE: It is a denser gas as it makes the balloon heavier than the air pressure around it thus making it sink.

I hope the explanation was helpful. :)

The moon does approximately -2.66 x 10⁹ J of work in stopping the asteroid.

To calculate the work done by the moon in stopping the asteroid, we need to determine the initial kinetic energy (KE_initial) of the asteroid and subtract it from zero, as the final kinetic energy (KE_final) is zero when the asteroid comes to a stop.

The initial kinetic energy (KE_initial) can be calculated using the equation:

KE = (1/2)mv²

where m is the mass of the asteroid (100 kg) and v is its velocity (200 m/s).

KE_initial = (1/2)(100 kg)(200 m/s)² = 2 x 10⁶ J

Since the moon does an equal amount of work but in the opposite direction to stop the asteroid, the work done by the moon is equal to the negative value of the initial kinetic energy.

Therefore, the work done is -2.66 x 10⁹ J. The negative sign indicates that the moon does work against the motion of the asteroid to bring it to a stop.

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the complete question is:

A small asteroid that has a mass of 100 kg is moving at 200 m/s when it is 1330 km above the Moon.

how much work does the moon do in stopping the asteroid if neither the moon nor the asteroid heats up in the process? (express your answer to three significant figures.)