Another bowling ball is suspended from the ceiling on a rope. You decide to start it swinging by pulling back on it so that it is raised 0.45 meters higher than it was to start. You let it swing: how fast is it moving at the bottom of its swing? How fast is it going at the top of its swing?

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Explanation:

the first, second, and fifth options

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)