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One of the main contaminants of a nuclear accident, such as that at chernobyl, is strontium-90, which decays exponentially at a rate of approximately 2.5 % per year. (a) write the ratio of strontium-90 remaining, upper p , as a function of years, t , since the nuclear accident. [hint: 100 % of the contaminant remains at t equals 0, so your function should take on the value 1 at t equals 0.]

Respuesta :

we can use formula

[tex]P(t)=P_0e^{-kt}[/tex]

we are given

[tex]P_0=1[/tex]

strontium-90, which decays exponentially at a rate of approximately 2.5 % per year

so,

[tex]k=0.025[/tex]

now, we can plug these values

and we  get

[tex]P(t)=1e^{-0.025t}[/tex]..........Answer

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