physics lab

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For an unknown sample of the experiment, students measure 1602 counts when they first receive their sample and 1317 counts 3.5 minutes later. Calculate the half-life t12 of their sample.

  • physics lab -

    If t12 is the half life in minutes,
    1317 = 1602*2^-(3.5/t12)

    Solve for t12

    2^-(3.5/t12) = 0.8221
    3.5/t12 = .2826
    t12 = 12.4 minutes

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