# AP (Advanced Placement) Physics(B-C): Questions 713 - 716 of 921

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## Question number: 713

### Question

Consider the density of fresh water is , and atmospheric pressure is . What is the absolute pressure at the bottom of a freshwater lake that has a depth of and a surface area of ?

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e. | Question does not provide sufficient data or is vague |

## Question number: 714

» Gravitation and Circular Motion

### Question

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?

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e. | All of the above |

## Question number: 715

### Question

A metal rod of mass and length is balanced on pivot horizontally, when pivot is at half-length of rod. A weight of is hanged on right end of the rod, the pivot must be displaced right side from the mid – point of the rod. What is the approximate displacement of pivot from mid – point after weight hanged?

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e. | Question does not provide sufficient data or is vague |

## Question number: 716

### Question

Three identical charges are located on the vertex of an equilateral triangle of side . What is the net electrostatic potential at orthocenter of the triangle?

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e. | Question does not provide sufficient data or is vague |