⚛️ PhysicsLevel 1 — 🟢 Basicnuclear👁 13 views⏱ 1 min read
解物理: 一种放射性元素的初始数量 N0 = 279，半衰期 half = 5 年。求经过 t = 25 …
📝 Problem
一种放射性元素的初始数量 N0 = 279，半衰期 half = 5 年。求经过 t = 25 年后剩余的数量。✨Detailed Solution
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