- #1

blueskadoo42

- 26

- 0

## Homework Statement

The electric field equals 19j for points above plane 'r', -31j between the planes, and -19j below plane 's', where j is the unit vector in the +y direction and the fields are in V/m. Calculate σr, the suface charge density for plane 'r'.

positive y- straight up

positive x-to the right.

## Homework Equations

E=Qenc/Epsilon0

## The Attempt at a Solution

i tried adding the 19j + -31j then multiplying that by Epsilon 0. that didnt work. not sure how to add or apply the electric fields. any pointers on how to solve that?