Two point charges are separated by a distance r and repel each other with a force F. If their separation is reduced to 0.280 times the original value, what is the magnitude of the force of repulsion between them?(adsbygoogle = window.adsbygoogle || []).push({});

I don't really understand this question and don't know where to start.

Would I start with the equation

E = ((k)(Q)/r^2

what follows next?

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# Point charges and force of repulsion

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