AP (Advanced Placement) Physics(B-C): Questions 353 - 355 of 920

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Question number: 353

» Fluids & Solids

MCQ▾

Question

A block of a certain material that is insoluble in water sinks when placed in a container of distilled water, then eventually rises to the surface. The block is removed and placed in a second container of distilled water, where the block floats and then eventually sinks. Which of the following is the best explanation for this?

Choices

Choice (5) Response

a.

Containers initially contain water at room temperature.

b.

The block has a greater density than distilled water at room temperature.

c.

The first container was filled with hot water.

d.

The first container was filled with cold water.

e.

None of the above

Question number: 354

» Periodic Motion, Mechanical Waves & Sound

MCQ▾

Question

As a simple harmonic oscillator decreases in amplitude under the influence of friction,

Choices

Choice (5) Response

a.

Total mechanical energy and frequency both decrease

b.

Total mechanical energy decreases and frequency remains constant

c.

Total mechanical energy decreases and period increases

d.

Period and frequency both decrease

e.

Question does not provide sufficient data or is vague

Question number: 355

» Fluids & Solids

MCQ▾

Question

If a person places his thumb over the end of a garden hose of running water, what is the effect on the speed of water flow and the amount of water leaving the hose each second?

Choices

Choice (5) Response

a.

The speed of flow decreases and the amount of water flow increases.

b.

The speed of flow increases and the amount of water flow decreases.

c.

The speed of flow and the amount of water flow both increase.

d.

The speed of flow increases and the amount of water flow stays the same.

e.

Question does not provide sufficient data or is vague

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