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Three point charges are arranged along the x axis. Charge q 1 = -4.20 nC is...

Three point charges are arranged along the x axis. Charge q 1 = -4.20 nC is located at x= 0.220 m and charge q 2 = 2.10 nC is at x= -0.330 m . A positive point charge q 3 is located at the origin.

1)What must the value of q3 be for the net force on this point charge to have magnitude 4.10 μN?

2)Where along the x axis can q3 be placed and the net force on it be zero, other than the trivial answers of x=+∞ and x=−∞?

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Answer #1

Solution) The force between two charged particles is given by

F=kQ1Q2/r^2

V3 pes tue chary at F132 -o.330 ) 106.esV.3 = o. 4ssx1056 9,3 4.29x10-9 4页6. d-lo.ss. R. I.4 1 4 ーd-) =an-Z 1-32) m

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