A point charge of +Q is placed at the center of a
ht 8c8ct.9fbe f+g4s v 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
th g8f+vfb4s 8.c9t ce third charge of -Q is placed at the lower-left corner?