Which statement best explains the net transfer of energy that is about to happen in this photo? A. The racket and the ball will both lose potential energy. OB. The racket will gain potential energy, and the ball will lose kinetic energy C. The ball will gain kinetic energy, and the racket will lose kinetic energy O D. The racket and the ball will both gain kinetic energy.

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)