- #1

JJfortherear

- 14

- 0

## Homework Statement

Sphere of radius R, E

_{r}=E

_{R}(r

^{4}/R

^{4})

Find the volume charge density (ρ

_{r}) as a function of r

## Homework Equations

Gauss's law

## The Attempt at a Solution

I get that dQ=4πr

^{2}ρ

_{r}dr, but have no idea how to solve for ρ