Physics, 20.07.2021 03:50, u8p4

A Geiger counter registers a count rate of 8,000 counts per minute from a sample of a radioisotope. The count rate 24 minutes later is 1,000 counts per minute. What is the half-life of the radioisotope?

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A Geiger counter registers a count rate of 8,000 counts per minute from a sample of a radioisotope....