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math

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A 10 kg quantity of a radioactive isotope decays to 3 kg after 17 years. Find the decay constant of the isotope.

  • math - ,

    Solve this for k:

    3 = 10 e^(-kt)
    where t = 17 years

    ln (3/10) = -17k

    k = 0.0798 y^-1

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