Can someone solve this please?

1 A cuboid is immersed in a non-uniform electric field given by E = 3N/Ci + 4(y/m) N/Cj. (a) Draw the normal direction n of the area on each side of the cuboid. y 1 m : 1 m 3 m (b) What is the electric net electric flux through the surface of the cuboid? (c) What net electric charge must exist inside the closed surface of the cuboid? 2 Two spheres both have a radius R = 1 m and total charge Q = 2 C each. One sphere is solid glass, while the other is solid copper. (a) For which sphere is the magnitude of the electric field/flux at r = 2 m larger? (b) For which sphere is the magnitude of the electric field/flux at r = 0.5 m larger