A point charge of +Q is placed at the center
aevzd ka4b9h +k.iz:)1g ebd) of a 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 ch
k 49h ide z:v.)1)bg ked+zbaaarge if a third charge of -Q is placed at the lower-left corner?