lynton2312 lynton2312

23-10-2021
Physics

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If the activity of a source is 70 Bq after 2 years, and 35 Bq after 15 years. How long will be until the activity is 8.75 Bq?

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rejoiceeniola35 rejoiceeniola35

23-10-2021

Answer:

So if the half-life is two days, four half-lives is 8 days. Suppose a sample has a count rate of 3,200 Becquerel (Bq) at the start, then its count rate after 8 days would be 1/16th of 3,200 Bq = 200 Bq.

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