Continuous sheet copper is made by electrodeposition from a solution containing CuSO4 onto a rotating drum of lead. For the conditions given below, what should be the rotation speed of the drum (revolution per hour)

other conditions to determine the revolution per hour needed must be given

Explanation:

photocells convert light energy to electricity

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )