47. A radioactive source consists of a mixture of two isotopes P and Q P has a half-life of 60 minutes and Q has a half- by a suitable counter is 800 min-!. After 120 min!.What was the initial contribution of P to life of 30 minutes. The initial activity recorded minutes the counter registers an activity of 80 the count rate? A. 160 min B. 240 min C. 270 min D.1480 min

47. A radioactive source consists of a mixture of two isotopes P and Q P has a half-life of 60 minutes and Q has a half- by a suitable counter is 800 min-!. After 120 min!.What was the initial contribution of P to life of 30 minutes. The initial activity recorded minutes the counter registers an activity of 80 the count rate? A. 160 min B. 240 min C. 270 min D.1480 min

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

Section: Chapter Questions

Problem 2OQ

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