1. The problem statement, all variables and given/known data Heat input of an engine is 1330 J/s at 375°C and heat output is 800 J/s. Each second, how much work is done in the process? 2. Relevant equations QL/QH=1-e 3. The attempt at a solution QL=(1-e)QH QH=W/e W=average of 1330 and 800 which is 1065J QH=1065J/.40 (e was calculated in part A, which I don't need help on). = 2.6625kJ QL=(1-.40)2.6625kJ QL=1.6kJ/s or 1.6kW I followed an example in my textbook, the part I am confused on is how to get W, I just took the average of the two that were given.