A particle with charge 4 C is located on the x-axis at the point 8 cm , and a second particle with charge 8 C

A particle with charge 4 µC is located on the x-axis at the point −8 cm , and a second particle with charge −8 µC is placed on the x-axis at 4 cm What is the magnitude of the total electrostatic force on a third particle with charge 9 µC placed on the x-axis at 2 cm ? The Coulomb constant is 8.9875 × 109 N · m2 /C 2. Answer in units of N. Answer in units of N.