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Two plastic balls, each of radius 6.20 cm, are placed so that there is a 32.5 cm space between them. The charge on one ball

Two plastic balls, each of radius 6.20 cm, are placed so that there is a 32.5 cm space between them. The charge on one ball is +3.80 nC and the charge on the other is -7.40 nC. What is the magnitude of the electric field at a point directly midway between the two balls?

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