A metallic sphere of radius $2.0 \mathrm{~cm}$ is charged with $+5.0-\mu \mathrm{C}$ charge, which spreads on the surface of the sphere uniformly. The metallic sphere stands on an insulated stand and is surrounded by a larger metallic spherical shell, of inner radius $5.0 \mathrm{~cm}$ and outer radius $6.0 \mathrm{~cm}$. Now, a charge of $-5.0-\mu \mathrm{C}$ is placed on the inside of the spherical shell, which spreads out uniformly on the inside surface of the shell. If potential is zero at infinity, what is the potential of (a) the spherical shell, (b) the sphere, (c) the space between the two, (d) inside the sphere, and $(\mathrm{e})$ outside the shell?
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