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SAT, 18.10.2021 19:30 fernandaretanaoxwln0
after the release of radioactive material into the atmosphere from a nuclear power plant in a country in , the hay in that country was contaminated by a radioactive isotope (half-life days). if it is safe to feed the hay to cows when % of the radioactive isotope remains, how long did the farmers need to wait to use this hay?
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