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 国际高中通用物理

[单选题]
A radioactive substance with a half-life of 3ue7 1 -3grd sx*ms kfkz)ybq,/.0 days has an initial activity of i-0x ugzbp.4-7 ,v2 p lwr7t4eq.ovvyko.qka yv2kg-7 vpz-. t0 qk.wvxo4peubal .4r,o7iq$0.24 \; Ci$. 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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