The farmer in Fig. 6.52 inserts nitrogen from a pressurized tank to fertilize a field. An isentropic process can be assumed as the gas leaves the tank. Estimate the temperature of the nitrogen at the point where it enters the soil if the pressure in the tank is
a) 8 MPa
b) 14 MPa. Make any necessary assumptions and assume constant specific heats and then variable specific heats. (This would be the same temperature should a hose burst and the nitrogen spray across the farmer.)
Figure 6.52