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 v;, /)jbbktnb(ttw(9p /j crak rag..a half-life of 3.0 days has an iqu10et 5g z+g0hj)y yzzr0)s-vu-vn cnitial activity of c1rgy)0 5 0h- e- njuz0 )vtvs+zquzgy$0.24 \; Ci$. 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

微信扫一扫，分享更方便