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Physics, 01.12.2020 17:10 nicky123415
A sample of a material has 20000 radioactive particles in it today. Your uncle measured 40000 radioactive particles in it 20 years ago. How many radioactive particles will the sample have 20 years from today?
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A sample of a material has 20000 radioactive particles in it today. Your uncle measured 40000 radioa...
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