AP (Advanced Placement) Physics(B-C): Questions 30 - 33 of 921

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Question 30

Question

MCQ▾

An elevator car is weighing is supported by a steel cable. What is the tension in the cable when the elevator is being accelerated upward at a rate of ?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

Question 31

Question

MCQ▾

Work is determined by multiplying force times distance. One joule of work is the equivalent of one newton of force multiplied by one meter. Which of the following is equivalent to one joule?

Choices

Choice (5)Response

a.

force 5 N and distance 2 cm

b.

force 5 N and distance 20 cm

c.

force 5 N and distance 200 cm

d.

force 50 N and distance 0.2 cm

e.

None of the above

Question 32

Question

MCQ▾

Assume that a piece of space debris is in a circular orbit at a distance from Earth՚s surface. If Earth՚s radius is and the period of the orbit is , what is the speed in orbit of the space debris?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

Question 33

Question

MCQ▾

The meter stick in the illustration has a mass of 0.5 kg. With a 1 kg laboratory mass hanging from the top end, the meter stick remains stable against a frictionless wall with its bottom end from the base of the wall. What is the friction force exerted on the stick by the floor?

A Meter Stick Inclined on Wall

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

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