A spherical capacitor is formed from two concentric spherical conducting shells separated by vacuum. The inner sphere has radius 12.5 cm and the outer sphere has radius 14.1 cm. A potential difference of 127 V is applied to the capacitor.

(a) What is the energy density at r = 12.6 cm, just outside the inner sphere?

J/m3

(b) What is the energy density at r = 14.0 cm, just inside the outer sphere?

J/m3