1. The problem statement, all variables and given/known data Forgive me for any indiscretions my first post. The problem is to find the Joules of heat per hour produced in a motor that is 75% efficient and requires 0.250hp to run it. 2. Relevant equations efficiency=1-(Qc/Qh) 3. The attempt at a solution 1. convert hp to Watts; 0.250hp* 746W/hp *75 percent=139W At this point the answer is wrong and I don't know why. I have tried for hours to solve this please help!