Positive charge q is uniformly spread over a large flat rectangular surface of dimensions 6.39 m by 1 m. What would q need to be, in Coulombs, to make the magnitude of the electric field 1 millimeter (1E-3 meters) away from the surface equal to 9.53 N/C? Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here