The nucleus in an iron atom has a radius of about 4.0 X 10-15 m and contains 26 protons.
(a) What is the magnitude of the repulsive electrostatic force between two of the protons that are separated by 4.0 X 10-15 m?
(b) What is the magnitude of the gravitational force between those same two protons?
(c) Based on your calculation, what would happen to the iron nucleus? How do you make sense