Physics, 20.05.2021 02:10 BeautyxQueen
74Be decays with a half-life of about 53 d. It is produced in the upper atmosphere, and filters down onto the Earth's surface. If a plant leaf is detected to have 350 decays/s of 74Be, how long do we have to wait for the decay rate to drop to 25 per second?
Answers: 2
= the initial activity
= half life
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74Be decays with a half-life of about 53 d. It is produced in the upper atmosphere, and filters down...
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