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05-12-2020
Physics

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A radioactive has a half-life of 40 seconds.
What fraction of the unstable nuclei will still be radioactive after 6 minutes?

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05-12-2020

Answer:

Explanation:

half life is 40 second after 6 minutes 9 half lives are passed so the amount of nuclei which sill remain radioactive is 1/2^n=1/2^9=1/512

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