- #1
PsychonautQQ
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Homework Statement
Say there is a charge of +3 at the origin and a charge of -7 at .5m Where would a third charge of arbitrary sign have to be for equilibrium to be reached?
Homework Equations
The Attempt at a Solution
so I've widdled this down to 3 / r^2 = -7/(.5+r)^2 but am having problems solving for r. Algebra is tough! anyone want to give me tips here? In the equation I have I already divided out the third charge and the k term.
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