A spherically symmetric charge distribution produces the electric field E⃗ =(250/r)r^N/C, where r is in m….

A spherically symmetric charge distribution produces the
electric field E⃗ =(250/r)r^N/C, where
r is in m. What is the electric field strength at
r = 20.0 cm? What is the electric flux through a
15.0-cm-diameter spherical surface that is concentric with the
charge distribution?