One pound of air as an ideal gas executes a Carnot power cycle. The isothermal expansion occurs at 2000 degree R from a pressure of 2710 lbf/in.^2 to a pressure of 1882 lbf/in^2. The isothermal compression occurs at 537 degree R from a pressure of 14.73 lbf/in.^2. to a pressure of 21.17 lbf/in.^2 Determine (a) the heat transfer to the air during the isothermal expansion, in Btu. (b) the heat transfer from the air during the isothermal compression, in Btu. (c) the work done by, or on, the air in each of the four processes, in Btu. (d) the cycle thermal efficiency. (e) Sketch the cycle on p-upsilon coordinates.