Phyiosics
posted by Ed .
Three point charges lie in a straight line along the yaxis. A charge of q1 = 9.50 µC is at y = 6.30 m, and a charge of q2 = 7.20 µC is at y = 4.00 m. The net electric force on the third point charge is zero. Where is this charge located?
y = m

set up the two force equations:
kq1q/(6.40x)^2= kq2q/(4+x)^2
solve for x
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