Physics Unit30: Nuclear Physics and Radioactivity (id: 041669688)

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本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 Generic Physics

[单选题]
A radioactive sample has a half-life of 10 min. What fracte hdr3y4e -w9a we05rtion of the sampl-fmf;0;;dz 9nrm tm.voxma g *e is ldt*m or f gxmmz;;n9;v-.0 afmeft after 40 min?

A. 1/2
B. 1/4
C. 1/8
D. 1/16


参考答案:  D


本题详细解析: 暂无