Coulombs Law Problem: Find Point Along Y-Axis for Zero Electric Field

[torquey123]

Homework Statement

A charge of -4.1 microC is located at the origin and a charge of -2.98microC is located along the y-axis at 2.11519 m.
The value of the Coulomb constant is 8.99x10^0.
At what point along the y-axis is the electric field zero? Answer in units of meters.

Homework Equations

E= F/q

F=kQq/r^2

The Attempt at a Solution

kq/x^2 = Q/(2.11519-x)^2

using this, and doing the math i got 1886 something...very incorrect.. Please help

 

[robb_]

1. Both charges produce an electric field.
2. What will happen to a test charge placed at a position where the electric field is zero?
3. You should first intuit where the field will be zero. I.E. is it along the negative y axis, between the charges, or past the second charge along the y axis.
Hope that helps.