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What must be the distance in meters between point charge q1 = 21.2 µC and point...

What must be the distance in meters between point charge q1 = 21.2 µC and point charge q2 = -39.4 µC for the electrostatic force between them to have a magnitude of 7.21 N?

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Answer #1

As only magnitude is asked so we have ignored the negative sign of charge q2.

Still if you have any doubts let me know in the comment below.

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