Basically, I am given a graph with three charges, q1, q2, and q3 on it and told that the charge on q1 is 22 microcoulombs and the charge on q2 is 19 microcoulombs. I am then told that the force on q1 points in the -x direction which I used to find that the charge on q3 was also 19 microcoulombs since it is the same distance from q1 as q2 is. The coordinates for each charges are as follows:
q1 - (0,1)
q2 - (2,0)
q3 - (2,2)
What I need to find is the magnitude of the force on q1 caused by both q2 and q3.
I would think just Coulomb's Law.
The Attempt at a Solution
I used the superposition principle and Coulomb's Law and added together the x-components of each charge's individual force and came up with 1.9 Newtons. However, the online answer-checker thing is saying I am incorrect. I also tried doing stuff with finding r(hat) and using that to find the answer, but I still didn't get it right. Any help?