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Two charges, A (negative) of charge -144x10^(-12)C and B (positive) of charge 256x10^(-12)C, are located (fixed) in a plane at positions of coordinates (16 cm, 0) and (0, 12 cm), respectively. If the magnitude of the electric field due to the charge A in a point P (16 cm, 12 cm) is 90 V/m, the magnitude of the electric field in P due to the two charges is close to