$(3\%)$ Problem $6$: Two balloons have equal and opposite charges. Balloon one has $N={10}^7$ excess electrons. The balloons are separated by $d=2\mathrm{.}5m$ and each

electron has a negative charge of $e=1\mathrm{.}602{10}^{-19}C.$

$40\%$ Part $($b$)$ What is the magnitude of the force $($in N$)$ of balloon one on balloon two using the variables provided and the Coulomb constant