Half-life and decay constant (id: 51b150ef1)

本题目来源于试卷: Half-life and decay constant，类别为 美国物理杯赛(Physics Bowl)

[单选题]
01.17: If 25% of a sample of a radioactivekf-nrhekw lr a*z.8e q7ol + 86/cte7w vxpmxc3 +l.q8 0nxakf pyd.9 )isotope decays in 4 hours, we would estimate the sample's half lif8+qxa pmd.x)kp.v30fn9y x cl e to be about

A. 1.9 hours
B. 4.0 hours
C. 8.0 hours
D. 9.6 hours
E. 13.8 hours


参考答案:  D


本题详细解析: 暂无

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