(a) Draw the Carnot cycle for one mole of an ideal diatomic gas to the exact scales on (V. S) and (T. P) coordinates for T2 = 700 K, P (initial) = 10 bars, P final = 3 bars for the upper isothermal expansion, and T1 = 315 K for the lower isothermal compression. (b) What fraction of heat absorbed at T 2 is converted into mechanical energy? (c) What is the change in the entropy of surroundings per cycle when 20% of the work for the reversible cycle is lost by friction in the third stage?