Can any one help me for this problem?

Question

The cube in Figure 23-27 has edge length 1.40 m and is oriented as shown in a region of uniform electric field. Find the electric flux through the right face for the following electric fields, given in newtons per coulomb.
(the figure is like the cube from the origin, which y is horizontal, z is verticle, and x is point to the screen)

What is the total flux through the cube when the field is (-4.00 i + 2.00 k)?

Please help me to analyze and solve this problem. Thanks.

The flux must pe passing through the face, so the dot product is in order. On the x side, ony the i component is normal to the surface. On the j side, there is no electric flux passing thru. On the k side, the k cmponent is normal.

Answer 1

105.18