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5. What is the activity of a Cs-137 source on Jan 11, 2010. The original activity was 25 mCi on Dec 4, 2000. Page 16 of your book: A= Aoe® A,-Original Activity A- final activity λ= decay constant T1/2 = ln2 / λ [ In2= 0.693]

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Half Life 따 Cs . 13...- 2017. УАО T, 0 6 93 30-1フ 30 7 = 0.203L ナt

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