At the start of the compression process for of single cylinder cold air standard Otto cycle the pressure and temperature are P₁ = 100 kPa and T₁-300 K. If the compression ratio for this engine is equal to 10 and the net work produced by the engine is 500 kJ/kg, the mean effective pressure is most nearly equal to A. 301 kPa B. 350 kPa C. 645 kPa D. 666 kPa E. 5000 kPa

(can expect help me on questions 5-10 of my this practice problem statement ?)The container truck engine operated on the diesel cycle with a compression ratio of 12. Assume the mass of air in the engine is conserved. At the start of the compression process, the air is at 1 atm and 30 oC. 400 kJ/kg of heat is removed from the air during the constant-volume heat rejection process. The ratio of . Through the diesel cycle, 20% of the work done by the air is used to operate the vehicle's refrigeration and heat pump system. One diesel cycle took 0.7s to complete. The heat rejection from the refrigeration and heat pump system is 800 kJ. The refrigeration system uses R-134a as the working fluid and operates between 100 kPa and 1200 kPa pressure limits. cp = 1.005 kJ/kg/K, cv = 0.7177 kJ/kg/K, R = 8.314J/mol/K, Molecular mass of air= 29g/mol.   1) Calculate the temperature at the start of the heat rejection process. 2) Calculate the temperature at the end of the heat addition process. 3)…

8. An air-standard dual cycle has a compression ratio of 14 and a cutoff ratio of 1.2. The pressure ratio during the constant-volume heat addition process is 1.5. The cycle is operated at 80 kPa and 20°C at the beginning of the compression. Determine the following: a. thermal efficiency. 64.59% b. amount of heat added. 556.7054 kJ c. the maximum gas pressure and temperature. 1242.6235°C, 4827.9248 kPa d. Mean effective pressure. 368.2974 kPa

pls answer all i will give thumbs up if right