Figure 19-29 shows a cycle consisting of five paths: AB
is isothermal at 300 K,BC is adiabatic with work
= 5.0 J,CD is at a
constant pressure of 5 atm, DE is isothermal, and EA is adiabatic
with a change in internal energy of 8.0 J.What is the change in internal
energy of the gas along path CD?