An interesting (but oversimplified) model of an atom pictures an electron “in orbit” around a proton….

An interesting (but oversimplified) model of an atom pictures an electron “in orbit” around a proton. Suppose this electron is moving in a circular orbit of radius 0.13 nm (1.3 Times 10^-10 m) and the force that makes this circular motion possible is the electric force exerted by the proton on the electron. Find the speed of the electron.