The figure shows a closed Gaussian surface in the shape of a cube of edge length 2.80 m, with one corner at x1 = 4.00 m,y1 = 4.30 m. The cube lies in a region where the electric field vector is given by E =-3.00 7-3.80 y2) +3.40 k N/C, with y in meters. What is the net charge contained by the cube? Number i Units C