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Physics, 05.05.2020 18:21 abdullahs4639
After the release of radioactive material into the atmosphere from a nuclear power plant in a country in 1986, the hay in that country was contaminated by a radioactive isotope (half-life 6 days). If it is safe to feed the hay to cows when 15% of the radioactive isotope remains, how long did the farmers need to wait to use this hay?
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