# AP (Advanced Placement) Physics(B-C): Questions 66 - 69 of 921

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## Question number: 66

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MCQ▾

### Question

Three objects of equal mass are positioned on a coordinate plane at the coordinates and . The center of mass on the plane for the system of three objects would be located at the point:

### Choices

Choice (5)Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

## Question number: 67

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MCQ▾

### Question

In the illustration, a wire with tension helps support a horizontal wooden beam with mass that has a mass attached to its end. The beam has a length and is attached to the wall so that the wire makes a angle. Which of the following expressions could be used to determine the tension in the wire?

### Choices

Choice (5)Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

## Question number: 68

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MCQ▾

### Question

If a dipole is placed in uniform electric field and is the angle between dipole moment and uniform electric field, then at which of following value of , the torque on dipole becomes zero?

### Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

## Question number: 69

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MCQ▾

### Question

As Earth rotates, the speed of a location on its equator is approximately miles per hour. At what latitude would a location have half that speed?

### Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

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