- #1

Sox281212

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## Homework Statement

Two protons are 2.5fm apart.

What is the magnitude of the electric force on one proton due to the other proton?

## Homework Equations

Fe = K|q1||q2| / r

^{2}

## The Attempt at a Solution

Fe = (9 x 10

^{9})x(1.6 x 10

^{-19})

^{2}/ (2.5 x 10

^{-15})

^{2}

Fe = 37 N

I got the answer but I don't understand why I am able to use e= 1.6 x 10

^{-19}as q1 and q2? could someone explain? thanks