physics
posted by kyle .
On average, the electron and proton in a hydrogen atom are separated by a distance of (5.3 x 10 11 m), assuming the orbit of the electron to be circular,
(a) what is the electric force on the electron? and (b) WHat is the electrons orbital speed? and (c) What is the magnitude of the electrons entripetal acceleration in units of (g).

(a) Use Coulomb's law F = k e^2/R
(b) m V^2/R = F Solve for V
m is the elevtromn mass
(c) V^2/R