AP (Advanced Placement) Physics(B-C): Questions 389 - 391 of 920

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Question number: 389

» Periodic Motion, Mechanical Waves & Sound

MCQ▾

Question

As a musician “warms up” a wind instrument to play, the temperature of the air in the instrument increases. What is the result of this change in the fundamental for the instrument?

Choices

Choice (5) Response

a.

An increase in wave speed and frequency

b.

An increase in wave speed and decrease in frequency

c.

An increase in frequency and decrease in wavelength

d.

An increase in frequency and wavelength

e.

Question does not provide sufficient data or is vague

Question number: 390

» Linear Momentum

MCQ▾

Question

Object , which is moving to the right at speed , collides head-on and totally inelastically with an identical object B moving to the left at speed . What occurs after the collision?

Choices

Choice (5) Response

a.

Object A moves to the right at 2υ and Object B moves to the left at υ.

b.

The objects move together to the right at speed υ.

c.

The objects move together to the left at speed υ.

d.

Object A moves to the right at υ and Object B moves to the left at 2υ.

e.

All of the above

Question number: 391

» Thermodynamics

MCQ▾

Question

A rigid container of an ideal gas is heated so that the absolute temperature of the gas doubles while the volume remains constant. The molecules of the gas;

Choices

Choice (5) Response

a.

Have twice the average speed as before

b.

Have twice as much internal energy

c.

Increase in pressure, so they do more work on the walls of the container

d.

Must give off energy, since they cannot expand

e.

All of the above

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