Physics, 11.03.2020 22:05 rleiphart1

The half-life of a radioactive element is the time it takes for half the sample to decay; we determine how many half-lives have passed by how much of a sample remains the radioactive element and how much has become the decay product. In this way, we have estimated the age of the Moon and Earth to be roughly year.

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The half-life of a radioactive element is the time it takes for half the sample to decay; we determi...