Question

A helium nucleus and neon nucleus are separated by a distance of 3.0 nanometers. The charge of the helium nucleus is +2e while that of neon nucleus is +10e. Find the magnitude of the electrostatic force they exert to one another.

Answer 1

Electric force

$F=\frac{kq_1q_2}{r^2}$

$$F=\frac{9\times10^9\times10\times1.6\times10^{-19}\times2\times1.6\times10^{-19}}{(3\times10^{-9})^2}=5.12\times10^{-10}N$$