[SOLVED] Electrostatic Force 1. The problem statement, all variables and given/known data One model of the structure of the hydrogen atom consists of a stationary proton with an electron moving in a circular path around it.The orbital path has a radius of 5.3x10^-11m. The masses of a proton and an electron are 1.67x10^-27kg and 9.1x10^-31kg, respectively. Calculate the electrostatic force between the electron and the proton. 2. Relevant equations F=kq1q2/r^2 3. The attempt at a solution I looked at the question but I really didn't know where to start since none of the qs (charges) where given. I looked at the solution and I found that they used 1.6x10^-19C as the charges, so the equation subbed in looked like this: k(1.6x10^-19C)^2/r^2. I don't understand where or how they got 1.6x10^-19C. Any help will be appreciated!