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A radioactive material has a half-life of 20 days. A sample of the material contains 8.0 × 101° atoms. How many atomic nuclei have decayed after 60 days? A 1.0 x 1010 B 4.0 × 1010 C 6.0 x 1010 D 7.0 x 1010

A radioactive material has a half-life of 20 days. A sample of the material contains 8.0 × 101° atoms. How many atomic nuclei have decayed after 60 days? A 1.0 x 1010 B 4.0 × 1010 C 6.0 x 1010 D 7.0 x 1010

College Physics
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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O a .ll + C 8% 8:37 pm David 25 minutes ago 38 A radioactive material has a half-life of 20 days. A sample of the material contains 8.0 × 1010 atoms. How many atomic nuclei have decayed after 60 days? A 1.0 x 1010 B 4.0 x 1010 C 6.0 x 1010 D 7.0 x 1010 A
Transcribed Image Text:O a .ll + C 8% 8:37 pm David 25 minutes ago 38 A radioactive material has a half-life of 20 days. A sample of the material contains 8.0 × 1010 atoms. How many atomic nuclei have decayed after 60 days? A 1.0 x 1010 B 4.0 x 1010 C 6.0 x 1010 D 7.0 x 1010 A
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