A sample of a radioactive isotope is found to have an activity 115.0 Bq immediately after it is pulled from a reactor that formed it. Its activity 3 hours later is measured to be 85.2 Bq. (a) Calculate the decay constant and half life of the sample. (b) How many radioactive nuclei were there in the sample initially?

A sample of a radioactive isotope is found to have an activity 115.0 Bq immediately after it is pulled from a reactor that formed it. Its activity 3 hours later is measured to be 85.2 Bq. (a) Calculate the decay constant and half life of the sample. (b) How many radioactive nuclei were there in the sample initially?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter29: Nuclear Physics

Section: Chapter Questions

Problem 25P

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