#### CARNiVORE

Gold Member

- 33

- 2

**1. Homework Statement**

The figure shows a closed Gaussian surface in the shape of a cube of edge length 1.80 m. It lies in a region where the electric field is given by E= (2.86

*x*+ 3.82)i + 7.18j + 8.36k N/C, with

*x*in meters. What is the net charge contained by the cube?

**2. Homework Equations**

ε

_{0}× ΣΦ = Σq

_{enc}

Φ = ∫E⋅dA

**3. The Attempt at a Solution**

I'm not even sure if the above equations are the correct ones to use, actually. I've never seen a problem like this and I'm not sure how to even begin. I know, however, that the y- and z-components of the electric field on this cube are constant. That is as far as I am, unfortunately.

Thanks so much for your help.