What is the half-life of a radioactive isotope if the activity of a sample drops from 6,080 cpm to 190 cpm in 21.0 min? Answer needs to have significant figures. I got 4.2 min as my answer but am told it is wrong.
What is the half-life of a radioactive isotope if the activity of a sample drops from 6,080 cpm to 190 cpm in 21.0 min? Answer needs to have significant figures. I got 4.2 min as my answer but am told it is wrong.
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter30: Nuclear Physics
Section: Chapter Questions
Problem 18P
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What is the half-life of a radioactive isotope if the activity of a sample drops from 6,080 cpm to 190 cpm in 21.0 min? Answer needs to have significant figures. I got 4.2 min as my answer but am told it is wrong.
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