Physics Unit30: Nuclear Physics and Radioactivity (id: 374313d96)

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]
If $4.0 \times 10^{18} \; atoms$ decay with a half-life of 2.3 years, how many are remaining after 3.7 years?

A. $2.5 \times 10^{18}$
B. $1.7 \times 10^{18}$
C. $1.3 \times 10^{18}$
D. $1.1 \times 10^{18}$


参考答案:  C


本题详细解析: 暂无

微信扫一扫，分享更方便