Two particles 1 and 2 , each carrying \(6.0 \mathrm{nC}\) of charge, are located along an \(x\) axis, one particle at \(x=-30 \mathrm{~mm}\) and the other at \(x=30 \mathrm{~mm}\). Where along the \(y\) axis is a particle 3 carrying a charge of \(+2.0 \mathrm{nC}\) if it experiences an electric force of \(6.9 \times 10^{-5} \mathrm{~N} \hat{\jmath}\) ?