The figure shows a closed Gaussian surface in the shape of a cube of edge length 1.6 m, with one corner atx1= 4.6 m,y1= 4.5 m. The cube lies in a region where the electric field vector is given by E = -3.4 i -3.8 y2j+2.8 k N/C, withyin meters. What is the net charge contained by the cube?