Question: Three point charges are positioned on the x-axis: +117.0 uC at x = 0.00 cm, +106.0 uC at x = 40.0 cm, and -20.0 uC at x = 30.0 cm.
Part A: What is the magnitude of the electrostatic force acting on the +117.0-uC charge?
I need help to find the magnitude of the electrostatic force acting on the charge.