In a simple model of a hydrogen atom, the single electron orbits the single proton (the nucleus) in a circular path. Calculate
(a) The electric potential set up by the proton at the orbital radius of 52.9 pm,
(b) The electric potential energy of the atom,
(c) The kinetic energy of the electron.
(d) How much energy is required to ionize the atom (that is, to remove the electron to an infinite distance with no kinetic energy)? Give the energies in electron-volts.