(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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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.

Question

(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
0.5
14,800
11,000
1.0
1.5
8.130
2.0
6,020
4,460
3,300
1,810
2.5
3.0
4.0
5.0
1,000
6.0
550
7.0
300

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