Two protons are 2.0 fm apart.
1) What is the magnitude of the electric force on one proton due to the other proton?
2) What is the magnitude of the gravitational force on one proton due to the other proton?
3) What is the ratio of the electric force to the gravitational force?
It computes the gravitational force and electric force on a proton due to the other proton. The solution is detailed and well presented.