How Far Must Protons Be to Equate Electrostatic and Gravitational Forces?

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SUMMARY

The discussion centers on determining the distance required between two protons for the electrostatic force between them to equal the gravitational force acting on a proton at Earth's surface. The gravitational force on a proton is significantly smaller than the electrostatic force, which is influenced by the proton's charge, equal in magnitude to that of an electron. The calculation necessitates knowing the charge of the protons to establish the relationship between distance and force.

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The question is how far apart must two protons be for the magnitude of the electrostatic force acting on either one of them to be equal to the force acting on a proton at Earth's surface due to gravity?

I calculated the force acting on a proton at the Earth's surface, very small of course, but in order to find the distance between the two protons shouldn't I know the charge of the protons inorder to have one unknown left, the distance?
 
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The charge on the proton is the same magnitude as the charge on an electron. (The proton's charge is positive, of course.) Look it up!
 
STUPID! :eek:
 

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