Question

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Answer 1

Answer:

$new \: distance(x) = \frac{r}{2 \sqrt{2} }$

Explanation:

Coulombus law follow inverse law of square of distance

$f \alpha \frac{1}{ {r}^{2} } \\ \frac{f}{8f} = \frac{ {x}^{2} }{ {r}^{2} } \\ \sqrt{ \frac{ {r}^{2} }{8} } = x \\ x = \frac{r}{2 \sqrt{2} } \: m$