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## Homework Statement

Trying to find the magnitude of the resulting force on the -7 nC charge at the origin and my answers arent matching up. Is there a step I am missing? I used the pythagorean to find r for both ΔOrigin-Q1 and ΔOrigin-Q2. Here is the graph: http://imgur.com/90TQmQU.

## Homework Equations

I've been using

Fy = kQ1Qy/r^2

Fx = kQ1Qx/r^2

Fnet = √(Fx)^2 + (Fy)^2

## The Attempt at a Solution

The current attempts have landed me at

Fy = 1.736 * 10^-2

Fx = 1.481 * 10^-2

Fnet = .23 N