An engine receives 3850j of heat and discards 2250j to the atmosphere. a) how much work is dobe by this engine? b) what is its thermal efficiency?
The engine does (3850j - 2250j) of work = 1600 j (or 1600 N-m)
The thermal efficiency is the amount of work produced divided by the heat provided.....
1600j / 3850j x 100% = 41.6 %