(b) The results of activity measurements on a radioactive sample are given in the Table. i) Find the half-life of the radioactive sample. ii) How many radioactive nuclei were present in the sample at t 0? iii) How many were present after 7 hr? Time (hrs) Counts S 0. 20,000 14,800 11,000 8.130 0.5 1.0 1.5 2.0 6,020 4,460 3,300 1,810 1,000 550 2.5 3.0 4.0 5.0 6.0 7.0 300

(b) The results of activity measurements on a radioactive sample are given in the Table. i) Find the half-life of the radioactive sample. ii) How many radioactive nuclei were present in the sample at t 0? iii) How many were present after 7 hr? Time (hrs) Counts S 0. 20,000 14,800 11,000 8.130 0.5 1.0 1.5 2.0 6,020 4,460 3,300 1,810 1,000 550 2.5 3.0 4.0 5.0 6.0 7.0 300

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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