Show that no real heat engine operating between two reservoirs of temperature T h and T c could ever be more efficient than a Carnot engine. Hint: you should use the entropy change at the hot reservoir and the entropy change in the cold reservoir in your argument.

Check all that are true In a reversible process: (For some reason I am not able to get the right answers every time, so I need your help!)

When the temperature T at the location where heat transfer is taking place is not constant, the exergy transfer accompanying.

The figure shows a reversible cycle through which 1.00 mole of a monatomic ideal gas is taken. Process bc is an adiabatic expansion, with pb = 5.80 atm and Vb = 1.00 x 10-3 m3. For the cycle, find (a) the energy added to the gas as heat, (b) the energy leaving the gas as heat, (c) the net work done by the gas, and (d) the efficiency of the cycle.