AP (Advanced Placement) Physics(B-C): Questions 283 - 286 of 921

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Question number: 283

» Fluids & Solids

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MCQ▾

Question

The speed of air moving over the top of a thin airfoil, such as an airplane wing, is , and the speed of air moving under the airfoil is . If the area of surface is approximately , what is the lift force on the airfoil due to the moving air?

(Assume the density of air is . )

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

Question number: 284

» Electric Circuits

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MCQ▾

Question

The circuit in the diagram shows five identical lightbulbs connected to a battery. If each bulb has a resistance of , find the equivalent (total) resistance of the five bulbs.

Circuit diagram of 5 identical light bulbs

Circuit Diagram of 5 Identical Light Bulbs

Choices

Choice (5)Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

Question number: 285

» Thermodynamics

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MCQ▾

Question

A metal ruler is made of a material that has a coefficient of linear expansion of . If the ruler is heated from to , by what percentage does the length of one centimeter on the ruler increase?

Choices

Choice (5)Response

a.

Less than

b.

Between and

c.

About

d.

Between and

e.

None of the above

Question number: 286

» Work, Energy and Power

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MCQ▾

Question

The graph displays data for a force applied to a spring. How much work is done on the spring by the applied force in extending the spring a distance of ?

Graph of Applied force verses spring extension

Graph of Applied Force Verses Spring Extension

Choices

Choice (5)Response

a.

b.

The work cannot be determined without knowing the elastic constant of the spring.

c.

d.

e.

None of the above

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