While at the hardware store, Naiya purchases the following supplies: a 9.0 V battery, two rolls of aluminum foil (each - with width w = 30 cm and length = 15m), a roll of wax paper (same width and length as the aluminum foil, thickness - d = 0.50 mm), and some copper wiring. She builds a capac- itor with foil plates and the wax paper acting as a dielectric (K = 4.0) and charges it up with the battery. What is the largest amount of energy this capacitor will be able to store? In addition to drawing a pictorial representation of the cir- cuit, please include a potential energy vs. voltage graph to illustrate the idea of using batteries with different voltages.