A point charge of +Q is placed
dlk8ks vjwm y:/:x6)5 :clqef-i f-u xat the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electros
ix)fl6-/cml8k : y5qd es:-ujk wv x:ftatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?