Moderate# Electric Flux through a Sphere

EANDM-4H3KBM

An electric field has the form $\overrightarrow { E } = 2.5 r^2 \widehat {r}$, where $r$ is the distance from the origin and $\widehat {r}$ is the unit vector that points radially away from the origin.

Calculate the electric flux through the surface of a sphere centered on the origin of radius $R = 7 \text cm$.