1. The problem statement, all variables and given/known data Two protons in an atomic nucleus are typically separated by a distance of 2x10-15 m. The electric repulsion force between the protons is huge, but the attractive nuclear force is even stronger and keeps the nucleus from bursting apart. What is the magnitude of the electric force between two protons separated by 2.00x10-15. 2. Relevant equations F = (kq1q2) / r2 3. The attempt at a solution I have no experience in electrostatics...I'm not sure how to solve this without knowing the charges of the two protons. Is there a certain way to? Thank you to all who read this and/or reply :).