A Carrot refrigerator is operated between two heat reservoirs at temperatures of 320 K and 270 K.
(a) If in each cycle the refrigerator receives 415 J of beat energy from the reservoir at 270 K, how many joules of heat energy does it deliver to the reservoir at 320 K?
(b) If the refrigerator completes 165 cycles each minute, what power input is required to operate it?
(c) What is the coefficient of performance of the refrigerator?