The electric field at a distance of 0.159 from the surface of a solid insulating sphere with radius 0.369 is 1750 .
a) Assuming the sphere's charge is uniformly distributed, what is the charge density inside it?
p= _____ c/m3
b) Calculate the electric field inside the sphere at a distance of 0.215 from the center.
E = _________ n/c
Please be clear with your answer