# AP (Advanced Placement) Physics(B-C): Questions 401 - 404 of 920

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## Question number: 401

MCQ▾

### Question

A pendulum is pulled back and released from a position m higher than its position at the bottom of its swing. What is the speed of the pendulum bob as it moves through the equilibrium position at the bottom of its swing after it is released?

### Choices

Choice (5) Response

a.

b.

c.

d.

e.

All of the above

## Question number: 402

MCQ▾

### Question

In which of the following actions is the most average power required?

### Choices

Choice (5) Response

a.

Lifting a block to a height of in

b.

Burning a lightbulb that has a resistance of using

c.

Changing the kinetic energy of a rolling wheel from to in

d.

Pushing a block across a level surface with a net force of at a velocity of

e.

All of the above

## Question number: 403

MCQ▾

### Question

Which of the following best describes ultrasonic?

### Choices

Choice (5) Response

a.

Cyclic pressure in a medium with a frequency lower than

b.

Supersonic pressure oscillations in a medium

c.

Sound with a frequency higher than

d.

Sound that cannot be perceived by humans, due to differences in physical properties

e.

All of the above

## Question number: 404

MCQ▾

### Question

Two carts are in contact with each other, with springs loaded, on an elevated section of track, as in the illustration.

If cart has twice the mass of cart , then when the spring is released:

### Choices

Choice (5) Response

a.

cart moves horizontally with greater velocity than cart and both the carts hit the ground at the same time

b.

cart moves horizontally with greater velocity than cart and hits the ground first

c.

cart moves horizontally with greater velocity than cart and hits the ground first

d.

cart moves horizontally with less velocity than cart and hits the ground first

e.

All of the above

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