each day the average family use 100kg of hot water
each day the average family use 100kg of hot water
to kill bacteria, the water going into the tank at 20°c must be heated t0 60°c
calculate the energy needed to increase the temperature of 100kg of water by 40°c
specific heat capacity of water = J/kg °c
write down the equation you use, and then show clearly how you work out your answer ?