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Physics 22 Online
OpenStudy (isabel☺):

A point charge of +3.50 µC is placed 0.80 m to the left of a second, identical point charge. What are the magnitudes and directions of the forces that each charge exerts on the other?

OpenStudy (anonymous):

F = k q Q / r^2 will tell how they repel k = 9 x 10^9 in SI units

OpenStudy (anonymous):

Glad to have been of help. Regards.

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