HW-C4 i Saved Help Save & Exit Submit Check my work 9 Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. Initially, air is at 400 kPa and 17C. The paddle wheel is now turned by an external electric motor until 74 kJ/kg of work has been transferred to air. During this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. Calculate the required amount of heat transfer, in kJ/kg. 10 points 0 eBook Air 400 kPa 17C 00 Hint ok Wh Print The required amount of heat transfer is kJ/kg o References