PLEAE HELP WILL GIVE YOU BRAINLIEST. Simplify 3
\sqrt{x} " alt=" \sqrt{x} " align="absmiddle" class="latex-formula">5 - 2
7 + 45 - 28
1 answer:
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Answer:
Step-by-step explanation:
The decay rate of a radioactive isotope (also called activity of the isotope) is given by:
where
r is the decay rate
k is the decay constant
N is the number of nuclei in the radioactive sample
The decay constant of a radioactive isotope is also related to the half-life of the isotope by the formula
where
is the half-life of the isotope, which is the time taken for the sample to halve, compared to its initial amount
In this problem, the half-life of plutioniun-239 is
Therefore, the k-factor (decay constant) is: