a general rule, the radioactivity from a particular radioisotope is considered to be reduced to a safe level after 10 half-lives have elapsed. (Obviously, the initial quantity of the isotope is also impor- tant.) By how much is the rate of emission of radiation reduced after 10 half-lives? Plutonium-239 is considered to be one of the most dangerous radioisotopes. Its half-life is about 25,000 years. How long would a sample of plutonium-239 have to be kept isolated it could be considered safe?

a general rule, the radioactivity from a particular radioisotope is considered to be reduced to a safe level after 10 half-lives have elapsed. (Obviously, the initial quantity of the isotope is also impor- tant.) By how much is the rate of emission of radiation reduced after 10 half-lives? Plutonium-239 is considered to be one of the most dangerous radioisotopes. Its half-life is about 25,000 years. How long would a sample of plutonium-239 have to be kept isolated it could be considered safe?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (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.

Question

general rule, the radioactivity from a particular radioisotope is
considered to be reduced to a safe level after 10 half-lives have
elapsed. (Obviously, the initial quantity of the isotope is also impor-
tant.) By how much is the rate of emission of radiation reduced
after 10 half-lives? Plutonium-239 is considered to be one of the
most dangerous radioisotopes. Its half-life is about 25,000 years.
How long would a sample of plutonium-239 have to be kept isolated
before it could be considered safe?
dioisotopes uranium-238 and uranium-

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