A domestic hot water tank (0.5 m diameter and 1 m high) is installed in a large space. The ambient temperature is 25 C. If the tank surface is oxidized copper with an emissivity of 0.8 and is at a peak temperature of 80 C. (a)What would be the reduction in heat loss if a coating of aluminum paint having emissivity =0.3 I the given to the tank. (b)What would be the increase in heat loss if a white paint of emissivity 0.97 is given to the tank.