A fixed mass of an ideal gas has volume 
at pressure 
and temperature 
. The volume of the gas is reduced at constant pressure to 
as shown in the figure below.
The final temperature of the gas is 
.
Determine
the final temperature of the gas
the external work done on the gas.
For this change in volume and temperature of the gas, the thermal energy transferred is 
. Determine 
, the change in internal energy of the gas.
