Предмет: Физика, автор: Znaykanalyne

Период полураспада Цезия-137 равен 30 годам. Какая часть атомов этого изотопа остается через 180 лет?
Помогите, плиз.

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Автор ответа: nika22veronika22
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He gave the woman £100.
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