Physics Unit30: Nuclear Physics and Radioactivity (id: ad4482a76)

本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 通用国际物理

[单选题]
A radioactive substance with a half-life of 3.0 days has an initial acti0s-pk5.vfj q lvity ofw )91*lep3kybr1 ejjm;z3axe l3ajk;y z1r*b)ex1 jm 9epe3w$0.24 \; Ci$. What is its activity after 6.0 days?

A. $0.12 \; Ci$
B. $0.48 \; Ci$
C. $0.06 \; Ci$
D. none of the given answers


参考答案:  C


本题详细解析: 暂无

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