(Solved): A capacitor is formed from two concentric spherical conducting shells separated by vacuum. The inne ...

A capacitor is formed from two concentric spherical conducting shells separated by vacuum. The inner sphere has radius $12.0\mathrm{cm}$, and the outer sphere has radius $15.0\mathrm{cm}$. A potential difference of 150.0 V is applied to the capacitor. What is the energy density at $r=12.1\mathrm{cm}$, just outside the inner sphere? Express your answer in joules per meter cubed. What is the energy density at $r=14.9\mathrm{cm}$, just inside the outer sphere? Express your answer in joules per meter cubed.