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6 January, 09:43

Earth has an excess of 60 electrons on each square centimeter of surface. Determine the electric charge on each square centimeter of surface.

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  1. 6 January, 09:59
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    The electric charge on each square centimeter of the Earth's surface is 9.6x10-18 Coulombs. We use the equation for the total charge Q if there are n that is equal to 60 electrons on each square centimeter of surface:

    Q = ne-

    We know that the charge e - on one electron is 1.6 x 10^-19 Coulombs. Therefore, the total electric charge Q is

    Q = (60) (1.6 x 10^-19 C) = 9.6 x 10^-18 Coulombs
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