Question

calculate the ratio of gravitational force and electrical force between proton and electron in a hydrogen atom. is mass of proton is 1.67 into 10 to the power minus 27 kg and radius of hydrogen atom is 0.53 angstron..

Answer 1

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Answer 2

here is your answer OK


The gravitational force between neutron and proton is
Fg=Gm1m2r2=6.67×10-11×1.6×10-27×9.1×10-310.53×10-102=3.46×10-47N

And the electrostatic force between them is
Fe=q1q24πε0r2=-1.6×10-19×1.6×10-194πε0×0.53×10-10=-8.19×10-8N

Negative sign indicates attractive force so we will ignore negative sign since gravitational force is also attractive force.
So the ratio is
FeFg=8.19×10-83.46×10-47=2.37×1039