AP (Advanced Placement) Physics(B-C): Questions 232 - 234 of 921

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Question 232

Question

MCQ▾

A object is moving at a constant velocity of on a level surface. If the coefficient of friction between the object and the surface is , calculate the constant power required to keep the object moving.

Choices

Choice (5)Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

Question 233

Question

MCQ▾

It is determined that a vertical cylindrical steel rod must support times more weight than previously calculated. Which of the following actions will meet this requirement without causing deformation of the rod?

Choices

Choice (5)Response

a.

Replace the rod with a rod of the same diameter but four times longer.

b.

Replace the rod with a rod of the same size but with a lower Young՚s modulus.

c.

Replace the rod with a rod of the same diameter but half as long.

d.

Replace the rod with a rod that has twice the diameter.

e.

Question does not provide sufficient data or is vague

Question 234

Question

MCQ▾

A charged particle moves into a region with a uniform magnetic field and is observed to move in a circular path in the field. A second charged particle is sent into the field in the same direction but at twice the speed. What difference in the particle՚s path will be observed?

Choices

Choice (5)Response

a.

The second particle will move in a circle with a smaller radius.

b.

The second particle will not move in a circular path in the magnetic field.

c.

There will be no difference in the paths of the two particles.

d.

The second particle will move in a circle with a larger radius.

e.

All of the above

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