AP (Advanced Placement) Physics(B-C): Questions 167 - 169 of 921

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Question 167

Question

MCQ▾

A satellite is in circular orbit around Earth at an altitude of three times of Earth radius above the surface. If the satellite uses onboard retro rockets to cut its speed to one half, at what distance from Earth can it establish a new stable circular orbit?

Choices

Choice (5)Response

a.

Between three times Earth radius and four Earth radii above the surface

b.

Between two times Earth radius and three Earth radii above the surface

c.

More than four times Earth radius above the surface

d.

Less than two times Earth radius above the surface

e.

None of the above

Question 168

Question

MCQ▾

In a laboratory, an oil droplet carrying charge of two-electron, is observed to hover between electrically charged plates so that the electrostatic force upward is equal to the gravitational force downward. Which of the following expressions can be used to determine the mass of the oil droplet?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

Question 169

Question

MCQ▾

The electrostatic force between two charged objects is . If each object is given twice its original charge and the objects are located at their original distance from each other, what is the new force?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

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