Solve the all parts of following question:
Question: A certain atom has 93 protons. Assume that the nucleus is a sphere with radius 7.35 fm and with the charge of the protons uniformly spread through the sphere.
Part A: At the nucleus surface what are the magnitude of the electric field produced by the protons?
Part B: At the nucleus surface what are direction (radically inward or outward) of the electric field produced by the protons?
Show how you get the answer, so that I can better understand how to do it. Thanks.