本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 Generic Physics
[单选题]
How long would it ta ,qdd- z6hz:vg(esg/t trsat;pb o..w4r c,7tke $4.0 \times 10^{20} \; atoms$ to decay to $1.0 \times 10^{19} \; atoms$ if their half-life was 14.7 years?
A. $29.4 \; years$
B. $58.8 \; years$
C. $78.2 \; years$
D. $147 \; years$
参考答案: C
本题详细解析:
暂无
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Post time 2024-1-22 01:01:29