The figure below shows a cylinder filled with an ideal gas, which has a moveable piston resting on it. The cylinder's volume is initially 5.50 L, when a force on the piston of F = 20.0 kN pushes the piston downward a distance d = 0.135 m, until the volume of the cylinder is 3.00 L. The process occurs while the cylinder is in thermal contact with a large energy reservoir at a temperature of 295 K.
What is the change in internal energy (in kJ) of the gas during the process (from the initial state to the final state)?
