5. In the Bohr model of a hydrogen atom, a single electron orbits a single proton at a radius of 5.29 x 10-11 m. The mass of a proton is

1.67 x 10-27 kg, the mass of an electron is 9.11 x 10-31 kg. a. Calculate the electrical force between the proton and the electron. b. Calculate the gravitational force between the proton and the electron. c. Which force is likely causing the electron to stay in orbit?