In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a

Question:

In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton. The radius of the orbit is 0.53 _ 10_10 m.
(a) Find the electrostatic force acting on each particle.
(b) If this force causes the centripetal acceleration of the electron, what is the speed of the electron?