A well-insulated hot water tank is used to supply hot water to a residential dwelling house. The immersion heating element inside the tank has a power rating of 2200 W and the tank contains 125 kg water at
28 degrees Celsius. Calculate :
(i) the energy supplied by the heating element in 2 hours
(ii) the heat energy supplied to the water, given that its temperature increases to 58 degrees Celsius
(iii) the heat capacity of the tank, assuming that the tank and the water reach the same final temperature of 58 degrees Celsius.