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MrBio23 MrBio23
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A month ago

A beam of gamma rays strikes a lead target with a half-value layer of 0.40 cm. What fraction of the photons in the beam will penetrate to a depth of 1.20 cm or more?



0.500



0.400



0.333



0.250



0.125

Textbook 
College Physics

College Physics


Edition: 5th
Author:
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duankong-feiduankong-fei
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A month ago
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