AP (Advanced Placement) Physics(B-C): Questions 417 - 418 of 921

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Question 417

Question

MCQ▾

What is the work done in placing a satellite of mass in orbit at a distance from Earth՚s center?

Choices

Choice (5)Response

a.

The work is equal to the gravitational potential energy of the satellite at that altitude above Earth՚s surface.

b.

The work is equal to the gravitational potential energy of the satellite plus the centripetal force necessary to keep the satellite in orbit at that altitude.

c.

The work is equal to the change in gravitational potential energy of the satellite from the surface to that altitude plus the change in kinetic energy of the satellite.

d.

The work is equal to the weight of the satellite plus the kinetic energy of the satellite.

e.

All of the above

Question 418

Question

MCQ▾

How much heat must be added or removed to allow 2 moles of an ideal gas to expand isothermally from to ?

Choices

Choice (5)Response

a.

An amount equal to the work done by the gas must be added.

b.

An amount equal to the work done by the gas must be removed.

c.

An amount equal to the product of pressure and volume must be added.

d.

No heat must be added or removed: .

e.

Question does not provide sufficient data or is vague

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