(a) Two protons in a molecule are 4.00 10-10 m apart. Find the electric force exerted by one proton on the other.
(b) State how the magnitude of this force compares with the magnitude of the gravitational force exerted by one proton on the other.
(c) What must be a particle's charge-to-mass ratio if the magnitude of the gravitational force between two of these particles is equal to the magnitude of electric force between them?
Part A: to find the electric force exerted use Colulomb's Law, which gives the following formula: