Problem # 2 Otto Cycle – Cold Air Standard Analysis An air-standard Otto cycle has a compression ratio of 8.5. At the beginning of compression, P, = 100 kPa and T, = 300 K. The heat addition per unit mass of the air is 1400 kJ/kg. Solve the problem on a cold air- standard basis with specific heats evaluated at 300 K. Determine the network, in kJ per kg of air. 805.2 kJ/kg] [b] the thermal efficiency of the cycle. 57.5%] [a] [n =

What is the difference between an open control volume system and a closed isolated system? Please explain in thermodynamics terms. Thank you!

A 50 lb object is subjected to an applied upward force of 30 lbf. The only other force acting on the object is the force of gravity. The acceleration of gravity is 32.2 ft/s². Determine the weight of the object, in lbf, and the net acceleration of the object, in ft/s². Step 1 Your answer is correct. Determine the weight of the object, in lbf, with positive values being down. Ibf W = 50 Hint Step 2 * Your answer is incorrect. Determine the net acceleration of the object, in ft/s², with positive values being upward. i 12.88 ft/s² Attempts: 1 of 4 used