1. (a) A sample ofU 238 92 containing 6x10^15 nuclei undergoes radioactive decay. If the half-life is 4.5x10^5 yrs, what fraction of U 238 92 will remain after 10^6 yrs? (b) What is the activity at t=0? (c) What is the activity at t=9x10^5 years 1. (a) A sample of 238 U containing 6x10¹5 nuclei undergoes radioactive decay. If the half-life is 4.5x105 yrs,what fraction of U will remain after 106 yrs?(b) What is the activity at t=0?(c) What is the activity at t=9x10³ years

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1. (a) A sample of 238 U containing 6x10¹5 nuclei undergoes radioactive decay. If the half-life is 4.5x105 yrs, what fraction of U will remain after 106 yrs? (b) What is the activity at t=0? (c) What is the activity at t=9x10³ years

1. (a) A sample of 238 U containing 6x10¹5 nuclei undergoes radioactive decay. If the half-life is 4.5x105 yrs, what fraction of U will remain after 106 yrs? (b) What is the activity at t=0? (c) What is the activity at t=9x10³ years

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter13: Nuclear Structure

Section: Chapter Questions

Problem 24P

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Question

1. (a) A sample ofU 238 92 containing 6x10^15 nuclei undergoes radioactive decay. If the half-life is 4.5x10^5 yrs, what fraction of U 238 92 will remain after 10^6 yrs? (b) What is the activity at t=0? (c) What is the activity at t=9x10^5 years

1. (a) A sample of 238 U containing 6x10¹5 nuclei undergoes radioactive decay. If the half-life is 4.5x105 yrs,
what fraction of U will remain after 106 yrs?
(b) What is the activity at t=0?
(c) What is the activity at t=9x10³ years

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