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2025年3月国际D卷练习 · 第 13 题

2025年3月国际D卷练习 · 原库模块 1 · Q13 原库参考解析

A sample of a certain isotope takes 29 years to decay to half its original mass. The function \( s\left(t\right)=136\left(0.5\right)^{\frac{t}{29}} \)  gives the approximate mass of this isotope, in grams, that remains t years after a 136-gram sample starts to decay. Which statement is the best interpretation of \( s\left(58\right)=34 \) in this context?
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