Question

Three point charges are on the x axis:

-4 µC at -3 m, 1 μC at the origin, and
-8 μC at 3 m.
Find the force on the first charge.
The value of the Coulomb constant is
8.98755 × 10⁹ N·m²/C².
Answer in units of N.

Answer 1

I think the answer is

-0.016 N