AP (Advanced Placement) Physics(B-C): Questions 290 - 292 of 921

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Question number: 290

» Work, Energy and Power

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MCQ▾

Question

A spring is placed on a horizontal, frictionless surface and compressed a distance of from its rest position with a ball of mass placed at its end. When the spring is released, the ball leaves the spring traveling at . What is the spring constant?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

Question number: 291

» Thermodynamics

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Question

A square metal plate of on a side is made of a material that has a coefficient of linear expansion of . If the plate’s temperature is increased from to , what is the new area of the plate?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

Question number: 292

» Work, Energy and Power

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MCQ▾

Question

As Earth moves closer to the sun in its orbit (toward perihelion), the gravitational potential energy of the Earth-sun system is:

Choices

Choice (5)Response

a.

Greater, since the two objects are closer together and gravitational forces are greater

b.

Less, since kinetic energy is greater and the sum must be constant

c.

Greater, since the speed of Earth is greater and both potential energy and kinetic energy increase

d.

Less, since the two objects are closer and both potential energy and kinetic energy must decrease

e.

None of the above

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