The side lengths of the square plates of an air-filed parallel-plate capacitor are 45 em, and a voltage difference between the two plates is created by a 525 V battery. a s0% Part (a) If the gap between the plates is initiall 1.58 mm, then how much energy, in nanojoules, is stored in the capacitor? Unita- nl A s0s Part (h) If the battery remains connected while the gap between the plates is increased to 212 mm, then how much energy, in nanojoules, is stored in the capacitor? Grade Numary