Electric Force and Coulomb's law problem

[Ailiniel]

Homework Statement

Two point charges are fixed on the y axis: a negative point charge q1 = -28 µC at y1 = +0.25 m and a positive point charge q2 at y2 = +0.38 m. A third point charge q = +8.5 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges has a magnitude of 26 N and points in the +y direction. Determine the magnitude of q2.

Homework Equations

Force in +y direction = +26 = Fq1q - Fq2q

Using F=kqq/r^2:

Fq1q=9x10^9(8.5x10^-6)(28x10^-6)/.25^2
Fq2q=9x10^9(8.5x10^-6)q2/.38^2

The Attempt at a Solution

q2=1.56x10^-5 coulumbs

 

[anathema]

Hello! Thank you for posting this problem. Based on the given information and equations, I am able to confirm that your solution for q2 is correct. Great job! Keep up the good work.