Section: Thermodynamics | Type: NAT | Marks: 1
Air in a closed system undergoes a thermodynamic process from an initial temperature of 300 K to the final temperature of 400 K. The specific heat of air at constant volume, vc varies linearly with the temperature, T (in K) as 3 (0.7 0.27 10 ) vc T − = + × kJ/(kg K). Change in the specific internal energy of the air in the system is _______ kJ/kg (round off to 2 decimal places).
Answer: 79.00 to 80.00