Determine the distance at which two charges, each equal to 1 C ,...

According to Coulomb's law, the electrostatic force between two charges $q_1$ and $q_2$ separated by a distance $r$ is given by $F = \dfrac{1}{4\pi\varepsilon_0} \dfrac{q_1 q_2}{r^2}$.

Given that $q_1 = 1 \text{ C}$, $q_2 = 1 \text{ C}$, and $F = W$.

Substituting these values into the formula, we get $W = \dfrac{1}{4\pi\varepsilon_0} \dfrac{1 \times 1}{r^2}$.

Rearranging the equation to solve for $r^2$, we obtain $r^2 = \dfrac{1}{4\pi\varepsilon_0 W}$.

Taking the square root of both sides gives $r = \sqrt{\dfrac{1}{4\pi\varepsilon_0 W}}$.