Find the ratio of the magnitude of the electric force to the grativational force acting between two protons.

Explanation

Let q,m be the charge and mass of a proton and r be the distance between them.
Gravitational force between two protons will be
`F_1=G.(m xx m)/(r^2)...(i)`
Coulomb's force between these two protons will be
`F_2=1/(4pi in_0) (qxxq)/(r^2).....(ii)`
form (i) and (ii), `(F_2)/(F_1)=1/(4pi in_0)xx(q^2)/(m^2) xx 1/G`
`=(9xx10^9xx(1.6xx10^(-19))^2)/((1.66xx10^(-27))^2xx(6.66xx10^(-11)))~~10^(36)`