A point charge of +Q is placed at the center of a square
yhyd lp)mqpj4t5jy2.21q wn4 , 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
.d4q1jh y22)4ptn y5qw yl jmp at the lower-left corner?