3. If 175 undecayed nuclei remained from a sample of 2800 nuclei, how many half lives passed?

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3. If 175 undecayed nuclei remained from a sample of 2800 nuclei, how many half
lives passed?
Transcribed Image Text:3. If 175 undecayed nuclei remained from a sample of 2800 nuclei, how many half lives passed?
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