?As we saw in Section , a radioactive substance decays exponentially: The mass at time
Chapter 7, Problem 80(choose chapter or problem)
As we saw in Section , a radioactive substance decays exponentially: The mass at time is , where is the initial mass and is a negative constant. The mean life of an atom in the substance is
For the radioactive carbon isotope, , used in radiocarbon dating, the value of is . Find the mean life of a atom.
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