Answer
the distance of $20000$ km to $100000$ km
Work Step by Step
$F=\frac{4,000,000}{d^2}$,
$F=0.0004N$ and $F=0.01N$.
$d^2=\frac{4,000,000}{0.0004}$,
$d^2=1\times10^{10}$,
$d=1\times10^5$
$d^2=\frac{4,000,000}{0.01}$,
$d^2=4\times10^{8}$,
$d=2\times10^4$
Therefore, from the distance of $20000$ km to $100000$ km.
