AP (Advanced Placement) Physics(B-C): Questions 19 - 22 of 921

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Question number: 19

» Gravitation and Circular Motion

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MCQ▾

Question

Consider two objects of different masses rotate in same circular frictionless path with same constant speed. And and are the centripetal force acted on the objects having masses and , respectively. If , then which of the following is true?

Choices

Choice (5)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

e.

None of the above

Question number: 20

» Electrostatics

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MCQ▾

Question

Determine the electric field at a distance of from the center of an object that has a net charge of .

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

Question number: 21

» Torque and Equilibrium

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MCQ▾

Question

A force of is applied to a wheel, as shown in the illustration. The radius of the wheel is , and the radius of the axle is . For the wheel to rotate at constant speed, determine the magnitude and direction of the friction torque exerted on the axle.

Force is applied on wheel

Force is Applied on Wheel

Choices

Choice (5)Response

a.

Counterclockwise

b.

Counterclockwise

c.

Clockwise

d.

Clockwise

e.

Question does not provide sufficient data or is vague

Question number: 22

» Electrostatics

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MCQ▾

Question

Which of the following is an example of an electric dipole?

Choices

Choice (5)Response

a.

A magnet

b.

A proton

c.

Earth

d.

A water molecule

e.

None of the above

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