A substance decays according to the formula Q = 24(0.5)"2.4, where t is in weeks. (a) What is its half-life? (Do not round off.) The half-life is Number weeks (b) By what percent does it decay each week? (Report to 2 decimal places.) It decays by Number % per week

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 30.4QQ: Suppose you have a pure radioactive material with a half-life of T1/2. You begin with N0 undecayed...
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A substance decays according to the formula Q = 24(0.5)"29.4 where t is in weeks.
(a) What is its half-life? (Do not round off.)
The half-life is Number
weeks
(b) By what percent does it decay each week? (Report to 2 decimal places.)
It decays by Number
% per week
Transcribed Image Text:A substance decays according to the formula Q = 24(0.5)"29.4 where t is in weeks. (a) What is its half-life? (Do not round off.) The half-life is Number weeks (b) By what percent does it decay each week? (Report to 2 decimal places.) It decays by Number % per week
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