43. ••• A coal-fired power plant produces 900 MW of electric power and operates at a thermal efficiency of 25%

(a) What is the input heat rate from the burning coal?

(b) What is the rate of heat discharge from the plant?

(c) Water at 15 °C from a nearby river is used to cool the discharged heat. If the cooling water is not to exceed a temperature of 40 °C, how many gallons per minute of the cooling water are required?