LUWI 6.
The height h of a water manometer
is 20 cm when used to measure the
a .
of a manometer whose liquid is
glycerine of density 1.26 g/cm (Take
g= 10 Nkg )
of a gas​

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 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.