(a) Explanation Write the expression for number of photons presents in the sample. N = E 1 E 2 (I) Here, N is the number of photons, E 1 is the photon energy detected from first half life period, and E 2 is the photon energy detected from second half life period. Conclusion: Substitute 1.00 × 10 4 MeV for E 1 and 1.04 MeV for E 2 in equation (I) to find N . N = 1.00 × 10 4 MeV 1.04 MeV = 9.62 × 10 3 Since only 50% of the photon are detected, the number of 65 Cu nuclei decaying is twice this value or 1.92 × 10 4 , in two half-lives, three fourth of the original nuclei decay (b) To determine The total mass of copper in the sample.

Physics for Scientists and Engineers with Modern Physics, Technology Update

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ISBN: 9781305401969

Author: SERWAY, Raymond A.; Jewett, John W.

Publisher: Cengage Learning

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Question

Chapter 45, Problem 45P

(a)

To determine

The number of 65Cu atoms in the sample.

(b)

To determine

The total mass of copper in the sample.

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Chapter 45, Problem 44P

Chapter 45, Problem 46AP

Chapter 45 Solutions

Physics for Scientists and Engineers with Modern Physics, Technology Update

Ch. 45.1 - When a nucleus undergoes fission, the two daughter...Ch. 45.2 - Prob. 45.2QQ Ch. 45.3 - Prob. 45.3QQ Ch. 45.4 - Prob. 45.4QQ Ch. 45 - Prob. 1OQ Ch. 45 - Prob. 2OQ Ch. 45 - Prob. 3OQ Ch. 45 - Prob. 4OQ Ch. 45 - Prob. 5OQ Ch. 45 - Prob. 6OQ

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