One kilograme of coal produces 3.6xx10^(6) cal of heat during combustion. Assuming that only 1/10 th energy so generated is utilised for useful purpose, find the mass of coal required per hour for running 210 kW engine.

One kilograme of coal produces 3.6xx10^(6) cal of heat during combusti

1.	One kilograme of coal produces 3.6xx10^(6) cal of heat during combustion. Assuming that only 1/10 th energy so generated is utilised for useful purpose, find the mass of coal required per hour for running 210 kW engine.
Answer» ANSWER :25920 KG