AP (Advanced Placement) Physics(B-C): Questions 121 - 124 of 921

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Question 121

Question

MCQ▾

Four equally charged positive particles are held in position in a square arrangement, so that each side of the square has a length . What is the net electric field at the center of the square due to the four charges?

Choices

Choice (5)Response

a.

b.

c.

d.

0

e.

All of the above

Question 122

Question

MCQ▾

Four equally positively charged particles are placed at the vertex of square. each side of the square has a length . What is the net force on an electron placed at the center of the square?

Choices

Choice (5)Response

a.

b.

0

c.

d.

e.

Question does not provide sufficient data or is vague

Question 123

Question

MCQ▾

A curved path of a radius is banked (angled with the horizontal) at . Suppose that an ice storm hits, and the curved path is covered with ice so that it is effectively frictionless. A car of mass is moving through this curved path with constant velocity. Then, find the velocity of the car.

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

Question 124

Question

MCQ▾

A string of negligible mass connects three blocks on a level surface, as shown in the illustration. A force of is exerted on the block, and the friction force on each block is . What is the acceleration of block of mass ?

Three Blocks of Masses 2kg, 4kg and 6kg

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

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