1. The problem statement, all variables and given/known data A Carnot engine has 40 g of helium gas as its working substance. It operates between two reservoirs of temperatures T1 = 400°C and T2 = 60°C. The initial volume of the gas is V1 = 2.0 X 10-2 m3, the volume after isothermal expansion is V2 = 4.0 X 10-2 m3, and the volume after the subsequent adiabatic expansion is V3 = 5.0 X 10-2 m3. (a) Calculate the work generated by this engine during one cycle. (b) Calculate the heat absorbed and the waste heat ejected during one cycle. 2. Relevant equations 3. The attempt at a solution I'm not sure how tor eally start this problem... I calculated the effiency of the carnot engine via this: 1-333K/673K-->0.505201 At this point, I wasn't sure how to treat an isothermal expansion. I know that delta U=0, and delta Q= delta W. I'm not looking for someone to do this for me. I would really appreciate it though, if someone could give me a clue where to start. Thanks.