AP (Advanced Placement) Physics(BC): Questions 714  717 of 921
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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.  Question does not provide sufficient data or is vague 

Question number: 715
Question
A metal rod of mass and length is balanced on pivot horizontally, when pivot is at halflength 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.  All of the above 

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.  None of the above 

Question number: 717
Question
A metallic wire of length and cross – section area , is stretched by a load . What is stress produced in the wire?
(Let )
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e.  None of the above 
