2. Three point charges line in a straight line along the y-axis. A charge q1 = -9.0µC is at y = 6.0m, and a charge of q2 = -8.0µC is at y = -4.0m. The net electric force on the third point charge is zero. Where is this charge located?
Added by Collin P.
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The net electric force on q3 is zero, which means the forces exerted by q1 and q2 on q3 cancel each other out. The electric force between two charges is given by Coulomb's law: F = k * |q1*q2| / r^2, where k is Coulomb's constant, q1 and q2 are the charges, and Show more…
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Three point charges lie in a straight line along the $y$ -axis. A charge of $q_{l}=-9.0 \mu \mathrm{C}$ is at $y=6.0 \mathrm{m}$ and a charge of $q_{2}=-8.0 \mu \mathrm{C}$ is at $y=-4.0 \mathrm{m} .$ The net electric force on the third point charge is zero. Where is this charge located? (See Sample Problem 17C.)
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