A particle has a charge of -3.00 nc. a. find the magnitude, Ask an Expert

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A particle has a charge of -3.00 nC. A.) Find the magnitude and direction of the electric field due to this particle at a point 0.250 directly above it. B.) Upward or downward? C.) At what distance from the particle does its electric field have a magnitude of 12.0 N/C?

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