A flat surface with an area of 2.21 m^2 is in a uniform electric field of magnitude 818 N/C.
A) Find the angle between the electric field and the normal* to the surface when the flux through the surface is 0 Nm^2/C.
*Note: the "normal" to the surface is a vector that points perpendicular to the plane of the surface. This is also called the "area vector" sometimes.
B) Find the angle between the electric field and the normal to the surface when the flux through the surface is 1610 Nm^2/C.