Equation Jeopardy $1$ The solution to a problem is represented by the

following equation:

$(9\mathrm{.}0{10}^9(N)*\frac{m^2}{C^2})(+20\mathrm{.}0{10}^{-9}C)\frac{+50\mathrm{.}0{10}^{-9}C}{(0\mathrm{.}1m{)}^2}$

$+(9\mathrm{.}0{10}^9(N)*\frac{m^2}{C^2})(+10\mathrm{.}0{10}^{-9}C)\frac{+50\mathrm{.}0{10}^{-9}C}{(0\mathrm{.}5m{)}^2}=(10kg)a_x$

Sketch a situation that the equation might represent and formulate a

problem for which it is a solution $($there are multiple possibilities$).$