Physics Help Forum Carnot Cycle problem Help please

 Sep 18th 2018, 06:38 AM #2 Member     Join Date: Sep 2014 Location: Brasília, DF - Brazil Posts: 32 If you know the working fluid, use these relations: $\displaystyle \oint P \,dV=\oint T \,dS$ $\displaystyle Q=\int Tds$ $\displaystyle Q_h=T_h\Delta S$ $\displaystyle Q_c=T_c\Delta S$ $\displaystyle \eta=\frac{W}{Q_h}=1-\frac{T_c}{T_h}$