In the figure below, $q=1\mathrm{.}0{10}^{-7}C$ and $a=5\mathrm{.}0cm.$ What are the horizontal and vertical components of the net electrostatic force on the charge in the lower left corner of the square?

Answer: $0\mathrm{.}11IN$ I $-U\mathrm{.}040$IVJ