Assume that one cycle of the engine of Problem 4.9-3 takes 20 s and that the conductance σh=σc=100 W/K. How much work is delivered per cycle? Assuming the ``control volume'' (i.e., the auxiliary system) is a gas, driven through a Carnot cycle, plot a T–S diagram of the gas during the cycle. Indicate numerical values for each vertex of the diagram (note that one value of the entropy can be assigned arbitrarily).