- #1

StrSpeed

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## Homework Statement

Three charges q1=+2Q q2=-2Q q3=-4Q. are each a distance d from the origin.

__What is the magnitude and direction of the electric field at the origin.__

I'm getting confused by not having d specified as a number.

## Homework Equations

E = Σ kq/r

^{2}

## The Attempt at a Solution

I've determined the magnitudes of the three E vectors for each charge. I know I cannot algebraically sum them and that I have to use sin/cos to get their components however I don't know where to begin.

Thank you so much for your help!

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