Electric Field due to Multiple Point Charges

[grandprix]

Homework Statement

Two point charges are placed on the x axis. The first charge, q1 = 8.00 nC, is placed a distance 16.0 m from the origin along the positive x axis; the second charge, q2 = 6.00 nC, is placed a distance 9.00 m from the origin along the negative x axis.

Calculate the electric field at point A, located at coordinates (0 m, 12.0 m).

Homework Equations

E=kq/r²

Calculate the distance from each charge to point A

Determine the directions of the electric fields


Calculate the components of E


Give the x and y components of the electric field as an ordered pair. Express your answer in Newtons per coulomb to three significant figures.

The Attempt at a Solution

I am not sure what to do.. I am getting confused with the components.. Can someone show m how to do this?

 

[rl.bhat]

Show your attempt. The components of E are Ecosθ and Εsinθ.