- #1

shqiptargirl

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## Homework Statement

Three charges are placed as shown in the figure below. The magnitude of q

_{1}is 2.00 µC, but its sign is not known. The charge and sign of q

_{2}is not known. We do know that q

_{3}is +4.00 µC and the net force on q

_{3}is entirely in the negative x-direction.

a.) Deduce the signs of charges q

_{1}and q

_{2}.

b.) Figure out the magnitude of q

_{2}

## Homework Equations

Coulomb's law:

F = (K)*(q1)(q2)/d^2

## The Attempt at a Solution

I know how to determine the charges of q

_{1}and q

_{2}. Since the y component of the net force vector of q

_{3}equals 0, then q

_{1}must be negative and q

_{2}must be positive.

Besides that, I have no idea on how to start figuring out the magnitude of q

_{2}