IOM 2016, Блиц — Задача 25

Olympiad of Metropolises, Moscow. Blitz Contest, September, 5 · 5 септември 2016 г.

Условие

The answer should be given in SI-units and rounded to the nearest integer, unless otherwise is stated. $g = 10$ m/s$^2$.

Uranium 238 ($^{238}$U) undergoes a series of alpha and beta decays until it terminates with stable lead-206 ($^{206}$Pb). What is the number of alpha decays in that decay chain?

Решение

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Оригинал в Архива: blitz.pdf