Question

A radio active isotope decays according to the exponential decay equation where t is in days.

Round to the thousandths place.

For the half life: The half life is the solution (t) of the equation : a2=ae−9.548ta

Answer 1

\[a/2=ae ^{-3.524t} \]

\[1/2=e ^{-3.524t}\]

Answer 2

ln(0.5) = -3.5324t
t = -ln(0.5)/3.5324
t =~ 0.1962 days

Answer 3

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