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Counter alpha particles, mounted near a radioactive isotope, the first measurement of one minute particles registered in 1408, and after 4 hours only 400 particles per minute. To determine the half-life of this isotope.
Task 60292. Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I'll try to help.
If you have any questions to address, please. I'll try to help.