Find The Half-life Of The Radioactive Element...

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Find the half-life of the radioactive element radium, assuming thatits decay constant is k = 4.332 * 10-4, with the timemeasured in years. Note: We are in a chapter of intregals. The answer the teacher gaveus was 1600 years.

 

Answer No.1

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I figured itout myself. Starting with the formula for exponential decay: N =N0e-kt which becomes N0/2 =Noe-kT. Wesolve for T and get (ln2)/k. Solving for T we have roughly1600 years.

Answer No.2

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Answer No.3

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