Blackie, a cat whose mass is 8-kg, is napping on top of the refrigerator when he rolls over and fall. Blackie has a KE of 100-J just before he lands on his feet on the floor. How tall is the refrigerator?

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.)

explanation:

newton's third law, for every action there is an equal and opposite reaction.