A 3 nC point charge is embedded at the center of a nonconducting sphere of radius = 4.1 cm which has a charge of -2 nC distributed uniformly throughout its volume. What is the magnitude of the electric field at a point that is 2.2 cm from the center of the sphere? Write your answer in terms of kN/C.

A 3 nC point charge is embedded at the center of a nonconducting sphere of radius = 4.1 cm which has a charge of -2 nC distributed uniformly throughout its volume. What is the magnitude of the electric field at a point that is 2.2 cm from the center of the sphere? Write your answer in terms of kN/C.