An engine with an output of 150W has an efficiency of 25%. It works at 10 cycles/s. A. How much work is done in each cycle? work=power(delta t) = 150 W * 1s = 150 J work =15.0 J per cycle **got part A correct B. How much heat is given off in each cycle? delta internal energy = delta work + delta heat delta intergy = 0 bc its a complete cycle delta heat = - delta work delta heat = 15 J **Part B isn't coming out.....please guide in the correct direction if possible.