Q6: A fission reactor accident evaporates 5 x 10° Ci of 9Sr (T1/2 27.7 yr) into the air. The 90Sr falls out over an area of 104 km'. How long will it take the activity of the 9"Sr to reach the agriculturally "safe" level of 2 uCi/m?,

Q6: A fission reactor accident evaporates 5 x 10° Ci of 9Sr (T1/2 27.7 yr) into the air. The 90Sr falls out over an area of 104 km'. How long will it take the activity of the 9"Sr to reach the agriculturally "safe" level of 2 uCi/m?,

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter31: Radioactivity And Nuclear Physics

Section: Chapter Questions

Problem 38PE: (a) Write the complete decay equation for 90Sr, a major waste product of nuclear reactors. (b)...

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Concept explainers

Nuclear Reactions

Nuclear reactions are processes in which the fundamental characteristics of a nucleus changes. They change into a completely different nucleus. These processes occur naturally in an unstable nucleus. Bombarding an energetic particle can induce nuclear reactions. In this article, both the naturally occurring nuclear reactions are termed as radioactive decay and the induced nuclear reactions are further categorized as nuclear fission and nuclear fusion.

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Q6: A fission reactor accident evaporates 5 x 10° Ci of 9Sr (T12 27.7 yr) into the
air. The 90Sr falls out over an area of 104 km. How long will it take the activity of
the "Sr to reach the agriculturally "safe" level of 2 uCi/m,

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