wrecking ball is pulled into position before it is released. You wind up your watch so it can tick away the second. A basketball player bends his knees before the jumps. What is happening? In each examples energy is being it is waiting to be let loose. Any object can have stored energy. It can be stored because of two reason- its or its

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.)

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2