In the classical model of the hydrogen atom, the electron revolves around the proton with a radius of r = 0.53×10-10 m. (i) what is the magnitude of the electric field due to the proton at r? (ii) What is the magnitude of the electric force between the proton and the electron? (iii) What is ratio of the magnitudes of the electrical and gravitational force between electron and proton? (iv) Does the result in (iii) depend on the distance between the proton and the electron?