A point charge of +Q is placed at the center of a square, and a second po
c- 0: *k truamgv/hs2ik q*.kjint 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 at the lower-left corn
sv /*ta :0 hrqckm*kji-ug2.ker?