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-   -   Half-life (https://www.askmehelpdesk.com/showthread.php?t=515990)

  • Oct 12, 2010, 10:37 AM
    mindygallardo
    half-life
    The amount of radium 226 remaining in a sample that originally contained A grams is approximately C(t) = A(0.999 567)t where t is time in years. Find the half-life to the nearest 100 years.
  • Oct 12, 2010, 11:11 AM
    Unknown008

    I assume you mean:



    Do some calculation.

    Let C be the initial amount of Radium.



    When C halves, we get:



    Where:



    Replacing back, we get:



    Therefore;



    Find the value of t.

    Post what you get! :)

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