PHYSICS DUE SOON
posted by Ame .
In each cycle of its operation, a heat engine expels 6,100 J of energy and performs 1,300 J of mechanical work.
(a) How much thermal energy must be added to the engine in each cycle?_____J
(b) Find the thermal efficiency of the engine.____%
6100 + 1300 = 7,400 J
work out/heat in = 13/74 = .176 = 17.6 %