2. At steady, a reversible heat pump cycle discharges energy at the rate Qu to a hot reservoir at temperature TH, while receiving energy at the rate Qc from a cold reservoir at temperature Tc. (a) If Tx = 30C and Tc = 15C, determine the coefficient of performance. (b) If Q = 15 kW, Qc = 8.0 kW, and TC = 5C, determine TH in K. (c) If the coefficient of performance is 20 and T = 40C, determine Tc. in C. (25%) Q