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anonymous

  • one year ago

Two objects, each with a charge of +5.0 × 10^-5 C, are separated by 0.50 m. What is the magnitude and type of force between them? A. -90 N, attractive B. -45 N, repulsive C. +45 N, attractive D. +90 N, repulsive

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  1. Michele_Laino
    • one year ago
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    please wait a moment

  2. anonymous
    • one year ago
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    ok!

  3. Michele_Laino
    • one year ago
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    the force is repulsive, since both charges are positive

  4. anonymous
    • one year ago
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    ok! so it is either B or D? how can we find out which one?

  5. Michele_Laino
    • one year ago
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    the magnitude of that force, is given by the Coulomb's law: \[\large F = K\frac{{{Q_1}{Q_2}}}{{{d^2}}} = 9 \times {10^9}\frac{{5 \times {{10}^{ - 5}} \times 5 \times {{10}^{ - 5}}}}{{{{\left( {5 \times {{10}^{ - 1}}} \right)}^2}}}\]

  6. anonymous
    • one year ago
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    ok! we get 90? so our solution is choice D?

  7. Michele_Laino
    • one year ago
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    that's right!

  8. anonymous
    • one year ago
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    yay!! thank you!!

  9. Michele_Laino
    • one year ago
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    :)

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