For an electron of charge -e and a proton of charge +eseperated a distance 0.53A

Question

For an electron of charge -e and a proton of charge +eseperated a distance 0.53A, compare the electrostatic andgravitaional forces between the two particles. the masses of theelectron and proton are me= 9.1 X 10-31 kgand mp= 1.7 X 10-27 kg. (by the way, the unit after 0.53 is a capital A with a littlecircle on top but i couldnt find it in the characters) For an electron of charge -e and a proton of charge +eseperated a distance 0.53A, compare the electrostatic andgravitaional forces between the two particles. the masses of theelectron and proton are me= 9.1 X 10-31 kgand mp= 1.7 X 10-27 kg. (by the way, the unit after 0.53 is a capital A with a littlecircle on top but i couldnt find it in the characters)

Explanation / Answer

The ratio of the electrostatic and gravitaional forcesbetween the two particles is             F/Fg =(ke2/r2)/(Gmemp/r2)                    =  (ke2)/(Gmemp) Here k =8.9*109N.m2/C2           G=6.67*10-11 N.m2/kg2            e=1.6*10-19C      me= 9.1 X10-31 kg and mp= 1.7 X 10-27kg Substitute the values.            e=1.6*10-19C      me= 9.1 X10-31 kg and mp= 1.7 X 10-27kg Substitute the values.

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