A point charge of +Q is placed at the center of a square, and a second point ch
rw9r*d/x xkvi1 kgr0*og 0-uxarge 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 magni
xird g/kv*1xrg*9k-uo 00 wrxtude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?