A particle with charge −5 µC is located on
the x-axis at the point −4 cm , and a second
particle with charge −6 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
8 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