Another student suggests that the relationship between t and h is of the form h where k is a constant.
To test whether or not the data support this relationship, a graph of t? against is plotted
as shown below.
The best-fit line takes into account the uncertainties for all data points.

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.