A point charge of +Q is plac
d5y is3hg5irt,.tk0 dnmp2 )yed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic 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
d3pgttih n0,s i5d)y my.kr5 2at the lower-left corner?