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Fyzika

Za dobu odpovídající trojnásobku poločasu přeměny zůstalo ve vzorku 106 atomů radioaktivního prvku. Kolik jader bylo ve vzorku na počátku měření?

Za dobu odpovídající trojnásobku poločasu přeměny zůstalo ve vzorku 10⁶ atomů radioaktivního prvku. Kolik jader bylo ve vzorku na počátku měření?