problem21_67

University Physics with Modern Physics with Mastering Physics (11th Edition)

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21.67: ° = = 48.6 so 00 . 2 50 . 1 sin θ θ Opposite charges attract and like charges repel. 0 2 1 = + = x x x F F F N 1680 so N 6 . 842 N 6 . 842 sin N 10 124 . 1 m) (0.0200 C) 10 C)(10.0 10 00 . 5 ( 2 1 2 1 1 3 2 6 6 2 1 - = + = - = - = - = × = × × = = - - y y y y y F F F F θ F F k r q q k F (in the direction from the C - 00 . 5 μ + charge toward the C - 00 . 5 μ - charge). b) The - y components have zero moment arm and therefore zero torque.
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