Problem 60298.
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DESCRIPTION
Problem 60298.
An alpha particle counter installed near a radioactive isotope registered 1000 particles per minute during the first measurement, but after 4 hours only 400 particles per minute. Determine the half-life of this isotope.
Additional information:
Detailed solution with a brief record of the conditions, formulas and laws used in the solution, derivation of the calculation formula and answer.
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