I have no idea about these questions.

3. Find the electric flux through the plane surface shown below if 0 = 60.0, E = 350 N/C, and d = 5.00 cm. The electric field is uniform over the entire area of the surface. (p37) E 4. Suppose two infinite planes of charge are parallel to each other, one positively charged and the other negatively charged. The surface charge densities of both planes are of the same magnitude. What does the electric field look like between the plates in this situation? What does the electric field look like outside the plates in this situation