A lab worker reports an activity of 80,000 counts/scounts/s for a sample of magnesium-21, whose half-life is 122 msms. Exactly 5.00 minmin later, another worker records an activity of 10 counts/mincounts/min on the same sample. What best accounts for this difference?
A lab worker reports an activity of 80,000 counts/scounts/s for a sample of magnesium-21, whose half-life is 122 msms. Exactly 5.00 minmin later, another worker records an activity of 10 counts/mincounts/min on the same sample. What best accounts for this difference?
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
Section30.3: Radioactivity
Problem 30.3QQ
Question
A lab worker reports an activity of 80,000 counts/scounts/s for a sample of magnesium-21, whose half-life is 122 msms. Exactly 5.00 minmin later, another worker records an activity of 10 counts/mincounts/min on the same sample. What best accounts for this difference?
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