AP (Advanced Placement) Physics(B-C): Questions 325 - 326 of 921

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Question number: 325

» Periodic Motion, Mechanical Waves & Sound

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MCQ▾

Question

An object is attached to a spring and set into motion, oscillating vertically. Which of the following statements is true regarding the motion of the object at the lowest point of its oscillation?

Choices

Choice (5)Response

a.

The object’s velocity and displacement from equilibrium are both maximum.

b.

The object’s velocity is equal to zero and displacement is a maximum.

c.

The object’s velocity and acceleration are equal to zero.

d.

The object’s acceleration is equal to zero and displacement is a maximum.

e.

None of the above

Question number: 326

» Fluids & Solids

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MCQ▾

Question

A balloon filled with helium gas will float to the ceiling of a room on Earth. What will happen to the same balloon when released on the surface of the moon?

Choices

Choice (5)Response

a.

Since there is no atmosphere on the moon, the balloon will expand to a larger volume and float more easily than on Earth.

b.

Since there is no air on the moon to provide a buoyant force on the balloon, it will sink to the surface.

c.

The gravitational force on the moon is less, so the balloon has less weight and will rise even faster.

d.

Since the surface of the moon is so cold, the balloon will shrink and thus have a lower density.

e.

Question does not provide sufficient data or is vague

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