Homework Help: Phyiosics

Posted by Ed on Sunday, December 19, 2010 at 7:38pm.

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

Phyiosics - bobpursley, Sunday, December 19, 2010 at 7:44pm
set up the two force equations:

kq1q/(6.40-x)^2= kq2q/(4+x)^2

solve for x

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