On two infinite parallel planes are evenly distributed charges to the surface density σ 1 = σ, σ 2 = -2σ, where σ = 20 nC / m ^ 2. Requires: 1) find the intensity E of the electric field in three areas: the left and right between the planes, 2) in the figure indicate the direction of the vector E for each field.
Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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