Q$.$ Consider three charges fixed on the $y-$axis: $q1+2\mathrm{.}00C$ located at $y_1=0,q2$ located at $y1=6\mathrm{.}00m,$ and $q3=-1\mathrm{.}00C$ located at $y{l}_1=8\mathrm{.}00m.$ What is the value of q$2$ such that q$3$ is in equilibrium? $($Hint: the net electrostatic force on it due to qi and $q_z$ is zero$)$