More electric forces pleaseee help

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BuBbLeS01

Homework Statement

Charge q2 experiences no net electric force. What is q1? (s=8.71 cm, q=-1 nC.)

F = K * Q * Q1 / r^2

How I solve for Q1 if I don't know F?

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BuBbLeS01

Oh nevermind...I got it!