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Question of Coulomb's law?

the mutual electrostatic force of attraction between two small spheres carrying charges +0.4 micro Coulomb and -0.8 micro coulomb in air is 0.2 N.What is the seperation between the two spheres?

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  • 10 years ago
    Favorite Answer

    F = kQ1Q2/ r^2

    where F = 0.2N

    k = 9 * 10^9

    Q1 = 0.4 micro

    Q2= -0.8micro

    find r^2

    and then find r

    you will get your answer!!

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