- #1

- 6

- 0

## Homework Statement

## Homework Equations

E=k*Q/r^2

## The Attempt at a Solution

Ey=E1sin30 + E2sin30 + E3; where E1=E2 (I'm denoting the 2 bottom charges as E1,E2, the negative as E3)

Ex=E1cos30 - E2cos30, this cancels.

from E=k*Q/r^2

I calculated r^2 to be L^4/4 (don't know if this is right... trig. and I haven't really been on speaking terms since high school)

since sin30=1/2... E1(1/2) + E2(1/2) just equal (1)E1; E1=k*Q/(L^4/4)

I guess from there I would have to add the y component of E3, which would be k*Q/(L^2/4)

Is my math/'plan of attack' okay so far? Is the next step simply adding E1 + E3 and simplifying?

THANK YOU!!!