A +2.0C charge is 1.0×10^4m to the right of a -4.0C. Calculate the electric field (magnitude & direction) at point 2.0×10^4m to the right of the positive charge and along a line passing through the two charges

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A: (6.6x10^2)/(2.0x10^-7) = 3.3x10^9

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Q: True, those are the answers, but how would you show the work?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.