AP (Advanced Placement) Physics(B-C): Questions 9 - 12 of 921

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Question 9

Question

MCQ▾

A metal sphere with a charge of comes into contact with a metal sphere of identical size that has a charge of . The spheres are then separated. What are the charges on the spheres after they are separated?

Choices

Choice (5)Response

a.

Each sphere has a charge of .

b.

Each sphere retains its original charge.

c.

Two spheres have zero net charge.

d.

Each sphere has a charge of .

e.

Question does not provide sufficient data or is vague

Question 10

Question

MCQ▾

At a distance of from Earth՚s center, the acceleration due to gravity is about . What is the closest estimate of the acceleration due to gravity at a point from Earth՚s center?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

Question 11

Question

MCQ▾

Three objects are positioned along a line. Each has a mass of and an x coordinate as shown in the illustration. Which of the following is true for net gravitational force on one due to the other two objects?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

Question 12

Question

MCQ▾

In figure, three positive charges of equal magnitude are placed at vertices of an equilateral triangle. At which point the electrostatic potentials due to each three charges are same?

Choices

Choice (5)Response

a.

Midpoint of side of triangle

b.

At point of charge

c.

Everywhere in triangle

d.

Orthocenter of triangle

e.

All of the above

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