1. The problem statement, all variables and given/known data In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.01e6 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.84e-11 m. Answer in units of N. 2. Relevant equations Fc=m*v^2/R 3. The attempt at a solution I said that the mass was 1.674e-27 kg. If i should use another number, please let me know. Fc=m*v^2/R Fc=(1.674e-27)*(2.01e6)^2/(4.84e-11) Fc=1.39e-4 When I submit this answer to UTexas (an online HW service) it says that I am wrong. I have done this problem several times and keep getting the same thing. Thanks!