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-   -   Half -life (https://www.askmehelpdesk.com/showthread.php?t=614055)

  • Nov 22, 2011, 05:50 AM
    mathlover69
    half -life
    The half-life of Radium -226 is about 1600 years. After 3000 years, what percentage P(t) of a sample of radium-226 remains. Assume you start with 100% = a
  • Nov 22, 2011, 08:43 AM
    Aurora2000
    The formula for the exponential decay process is

    where stands for the half life time, and the fraction of not decayed part after time .

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