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**1. The problem statement, all variables and given/known data**

A point charge of 5.6 microcoulombs is placed at the origin (x=0) of a coordinate system, and another charge of -1.9 microcouloumbs is placed on the x axis at .29m. Where on the axis can a third charge be placed so that it experiences no charge?

q1= 5.6 E-6

q2= -1.9 E-6

d= .29m

**2. Relevant equations**

F= k*(q1*q2)/r^2

**3. The attempt at a solution**

Fnet = F1,3 + F2,3

Fnet = 0

F1,3 = -(F2,3)

k*(q1*q3)/r^2 =k*(q2*q3)/(r-distance)^2

i know the k and q3 variables cancel out so i get

q1/r^2 = q2/(r-distance)^2

after i get this far I can't seem to get a correct answer. any help would be greatly appreciated!