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Консультация № 203065
08.07.2022, 03:17
0.00 руб.
11.07.2022, 21:31
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3
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос: активность радионуклида Цезий-137 на момент измерения сотавила 867 [color=gray]б[/color]к/кг (Бк/кг). Какова будет его активность через 5 лет если период полураспада составляет 30,17 лет?
Обсуждение
08.07.2022, 12:36
общий
Адресаты:
Вашу задачу можно решить в 2 алгебраических действия, используя школьный логарифм.
Показываю Вам Решения задач, похожих на Вашу: (rfpro.ru/question/202452 Ссылка) , rfpro.ru/question/202471 , rfpro.ru/question/194878 .
Дальше сами справитесь?
Показываю Вам Решения задач, похожих на Вашу: (rfpro.ru/question/202452 Ссылка) , rfpro.ru/question/202471 , rfpro.ru/question/194878 .
Дальше сами справитесь?
11.07.2022, 21:25
общий
это ответ
Здравствуйте, Вероника.
Задача школьная, для 9 класса, поэтому решать будем простыми школьными способами.
Дано:
А0=867 Бк/кг
t= 5 лет
T=30,17 года
Найти: А
Решение:
Закон радиоактивного распада
N=N0*2-t/T=N0/2t/T
где N0 и N - количество радиоактивных ядер в начальный момент времени и через время t соответственно.
Активность нуклида в р/а источнике пропорциональна количеству р/а ядер, поэтому для активности имеем аналогичную формулу
A=A0/2t/T
A=867/25/30,17=772,9 Бк/кг
Ответ: 772,9 Бк/кг
*******
Удачи
Задача школьная, для 9 класса, поэтому решать будем простыми школьными способами.
Дано:
А0=867 Бк/кг
t= 5 лет
T=30,17 года
Найти: А
Решение:
Закон радиоактивного распада
N=N0*2-t/T=N0/2t/T
где N0 и N - количество радиоактивных ядер в начальный момент времени и через время t соответственно.
Активность нуклида в р/а источнике пропорциональна количеству р/а ядер, поэтому для активности имеем аналогичную формулу
A=A0/2t/T
A=867/25/30,17=772,9 Бк/кг
Ответ: 772,9 Бк/кг
*******
Удачи
Об авторе:
С уважением
shvetski
С уважением
shvetski
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