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## Homework Statement

Two point charges are 3 m apart and their combined charge is 20µC. If they

repel each other with a fore of 0.075 N, what are the two charges? Ans: 15 μC and 5μC

## Homework Equations

F=k(q1*q2)/r^2

(could someone mention in their response how we use the math text in our posts, so that I can make it more convenient for the reader)

## The Attempt at a Solution

I'm really not so sure where to begin here, but I made a few attempts by manipulating both q

_{2}and q

_{2}. I will post one of them below:

9*10

^{9}(q

_{1}+q

_{2})/3

^{2}=0.075N