Physics, 20.05.2021 14:00 cobyontiveros

A sample of a radioactive material is placed near a radiation detector. A count-rate of 4800 counts/s is detected from the sample. After 36 hours the count-rate has fallen to 600 counts/s.
Calculate how many more hours must pass for the count-rate to become 150 counts / s.

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A sample of a radioactive material is placed near a radiation detector. A count-rate of 4800 counts/...