1. The problem statement, all variables and given/known data A Carnot engine moves a piston which applies 5N of force to a rotating disc by moving a piston 0.25cm for a total of 5W of power. If the high temperature reservoir is 100K, what must the temperature of the low temperature reservoir be? 2. Relevant equations The efficiency of a Carnot engine is given by the formula e = 1-TLo/THi. 3. The attempt at a solution I know you can rearrange the efficiency equation and solve for Tlo which is TLo = (1-e)*THi. After this this step I am drawing a blank on what to do next. I know that it gives you the work done by the piston and the power of the engine, but I dont know what to do next.