Three charges are placed as shown in the figure below. The magnitude of q1 is 2.00 µC, but its sign is not known. The charge and sign of q2 is not known. We do know that q3 is +4.00 µC and the net force on q3 is entirely in the negative x-direction.
a.) Deduce the signs of charges q1 and q2.
b.) Figure out the magnitude of q2
F = (K)*(q1)(q2)/d^2
The Attempt at a Solution
I know how to determine the charges of q1 and q2. Since the y component of the net force vector of q3 equals 0, then q1 must be negative and q2 must be positive.
Besides that, I have no idea on how to start figuring out the magnitude of q2