A copper vessel of mass 0.1 kg contains 0.2 kg of water at 25°C. A lump of copper which had stayed in a furnace for some time is transferred quickly from the furnace into the water. The temperature of water rises to 45°C finally. The massof the copper lump is 0.1 kg and its specific heatcapacity is 400 J kg-1°C-I. (a) Find the energy gained by the water. (b) Findthe energy gained by the copper vessel. (c) Find the energy lost by the copper lump. (d) What do you assume when you obtain the answer in (c)? (e) Estimatethe temperature of the furnace.