AP (Advanced Placement) Physics(B-C): Questions 78 - 79 of 920

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Question number: 78

» Electrostatics

MCQ▾

Question

In figure, the arrows represent a uniform electric field of magnitude . A charged particle is moved a distance of from point to point along a path. What is the magnitude of the change in electric potential of the particle, in volts, when it moves from point to point ?

Displacement of a charge particle in electric field

Displacement of a Charge Particle in Electric Field

In figure displacement of a charge particle is shown.

Choices

Choice (5) Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

Question number: 79

» Gravitation and Circular Motion

MCQ▾

Question

In the diagram, a hollow cone is spinning horizontally on its tip and a small object inside the cone takes a circular path without sliding down the interior of the cone. Which of the following statements is a reasonable explanation for this situation?

A hollow cone is spinning

A Hollow Cone Is Spinning

Figure shows, a hollow cone is spinning horizontally on it tip.

Choices

Choice (5) Response

a.

The normal force of the cone on the object has a component toward the center that provides a centripetal force.

b.

The combination of friction and the gravitational force on the object keeps it moving in a circle.

c.

The weight of the object has a component that provides a centripetal force.

d.

The friction force of the cone on the object has a component that provides a centripetal force.

e.

Question does not provide sufficient data or is vague

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