(Electric field due to a charged nonconducting sheet) Two very, large nonconducting plastic sheets, each 10.0 cm thick, carry uniform charge densities σ1, σ2, σ3, and σ4 on their surfaces. These surface charge densities have the values: σ1 = -11.29 μC/m2, σ2 = +9.39 μC/m2 , σ3 = +2.67 μC/m2, and σ4 = +3.25 μC/m2. Assume that the points A, B and C are far from the edges of these sheets.
Find the electric field, in N/C, at point B.