URGENT HELP NEED ! Engine cycle Question !!! Q: Data on an engine cycle is presented.if the gas has a compression/expansion index of 1.4, determine the work done(KJ) in the cycle by theoratical and graphical means. compare your results. Given: Pressure in (Pa) p1= 1 X 105 p2= 11.764 X 105 p3= 11.764X105 p4=2.207X105 Volume in M3 v1=0.826 v2=0.142 v3=0.25 v4=0.826 T1 (Temperature at state 1) = 293.15 K Specific heat capacity at constant pressure = 1000 J/KgK Specific Gas Constant = 287J/KgK Calculate the Work done and Thermal Efficiency(%) for the Cycle ::: Theratical ::: i drew a p-v diagram as below; check the attachment i found T2 = 592.84 T3= 1046.61 K T4 = 15.6 K im bit unsure about the T4 calculation T1 is given as above. now im going to find the enthalpy using specific heat constant and temperature at each cycle 1-2 ,2-3,3-4,4-1 to find the work and heat for each process. QUESTION: Is this the correct way of solving this or is there any other easy way of solving this problem??