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Mathematics 11 Online
OpenStudy (anonymous):

Two charged balloons 2.1 x 10^-1 meters apart have a repulsive force of 1.3 x 10^-1newtons. The charge on one balloon is 8.2 x 10^-7coulombs. What is the charge on the other balloon? (k = 9.0 x 10^9 newton·meters^2/coulomb^2)

OpenStudy (jhannybean):

Use Coulombs Law: \[\vec F = k\frac{q_1q_2}{r^2}\]

OpenStudy (anonymous):

its a bit confusing for me :/

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