A student is trying to build a home-made capacitor. He uses two 1.0 cm x 1.0 cm aluminum foil as the two parallel conducting plates, spaced 0.40 cm apart. He then connects the two foils with a 3.0V battery. To increase the capacitance, he places a stack of paper (k=3.6) in between the space and able to decrease the space between the two foils from 0.40 cm to 1.0 mm with the battery still connected. What is the change in energy of the capacitor