Question

What is the magnitude of the force F on the 1.0 nC charge in the figure ?

Answer 1

Here is the diagram. I know F total = F1 + F2
\[F1=(k*q1*q2)/r^2\] and F2 is the same but with the other charge. T get the right r I need to multiply the side of the triangle by a trig function, and I think its sin. Am I right here?

Answer 2

just multiply it out. and convert nC to C and 1 cm to m