A point charge of +Q is placed at the center of a square, and a second p
cl/1 x,ji.x zq0l*semm6dv.h39 u p nioint 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
cjq1,.pi emx / msul90.hvzxn*d3i6l the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?