# AP (Advanced Placement) Physics(B-C): Questions 494 - 497 of 921

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## Question number: 494

MCQ▾

### Question Two Charges Are Placed at X =- 2m and X = 1m In figure two charges are placed at x =-2m and x = 1m.

In figure, a charge is at and a charge is at . What is the net electric field at origin?

### Choices

Choice (5) Response

a.

b.

c.

d.

e.

All of the above

## Question number: 495

MCQ▾

### Question

An irregularly shaped piece of salt has a mass of . In order to find its volume without dissolving it, it is submerged in oil, which has a density of . The sample displaces of oil. What is the density of the sample?

### Choices

Choice (5) Response

a.

b.

c.

d.

e.

All of the above

## Question number: 496

MCQ▾

### Question

A particle is placed on a turntable, far from the center. If the turntable is rotating at , what is the speed of that particle?

### Choices

Choice (5) Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

## Question number: 497

MCQ▾

### Question

When an object of height is placed at from a mirror the mirror forms the image on the object itself. If the height of the image is equal to the height of the object, then what is the focal length of the mirror?

### Choices

Choice (5) Response

a.

0

b.

c.

d.

e.

None of the above