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90. For a period of time of 107 actinium decays atoms one atom? (Half-life of actinium T1 / 2 = 13.5 years = 4.23 • 108).
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- Content type File
- Content description 33,5 kB
- Added to the site 25.02.2016
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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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Solving a problem in physics section 57 point 90 quantu
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