An ideal refrigerator does 130.0 J of work to remove 780.0 J of heat from its cold compartment during each cycle. What is the refrigerator's coefficient of performance

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n