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Math Help - Field strength2

  1. #1
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    Field strength2

    In a hydrogen atom, the electron and the proton are seperated by an average distance of 5.3x10^-11m. What is the field strength from the proton at the position of the electron?
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by johett View Post
    In a hydrogen atom, the electron and the proton are seperated by an average distance of 5.3x10^-11m. What is the field strength from the proton at the position of the electron?
    |E|=\frac{-e}{4\pi \varepsilon_0 (5.3 \times 10^{-11})^2}

    where e is the charge on an electron, or -e the charge on a proton.

    RonL
    Last edited by CaptainBlack; February 10th 2008 at 12:47 PM.
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    The answer in the text says 3.6x10^4N/C toward smaller charge but I got 1.08x10^5N/C if I used the(1m)^2 in my calculations
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    Quote Originally Posted by johett View Post
    The answer in the text says 3.6x10^4N/C toward smaller charge but I got 1.08x10^5N/C if I used the(1m)^2 in my calculations
    This comment belongs in the other thread. There you are adding when you should be subtracting as the two field components act in opposite directions.

    RonL
    Last edited by CaptainBlack; February 10th 2008 at 01:05 PM.
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