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  • one year ago

A balloon, when rubbed against denim, gains a charge of -10μC. The force between the balloon and the denim when they are separated by a distance of 5 cm is:

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  1. Michele_Laino
    • one year ago
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    since the electric charge is conserved, then the denim will gain a charge of +10*10^-6 coulombs The requested force, has the subsequent magnitude: \[\large F = K\frac{{{Q_1}{Q_2}}}{{{r^2}}} = 9 \times {10^9}\frac{{ - 10 \times {{10}^{ - 6}} \times 10 \times {{10}^{ - 6}}}}{{{{\left( {5 \times {{10}^{ - 2}}} \right)}^2}}} = ...?\]

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