Answer: decays with a half-life of about 53 d. It is
Chapter 30, Problem 30.58(choose chapter or problem)
decays with a half-life of about 53 d. It is produced in the upper atmosphere, and filters down onto the Earths surface. If a plant leaf is detected to have of (a) how long do we have to wait for the decay rate to drop to 25 per second? (b) Estimate the initial mass of on the leaf
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