本题目来源于试卷: Half-life and decay constant，类别为 美国物理杯赛(Physics Bowl)
[单选题]
07.50: A gas undergoes radioa.7e19g0 :s5yd acroy obwf/a zctive decay with time co.l7kde7tfpu 4 s2mv d9nstant $\tau$. A sample of 10000 particles is put into a container. After one time constant has passed, the experimenter places another 10000 particles into the original container. How much time passes from the addition of the particles until the container of gas reaches 10000 total particles again?
A. 0.405 $\tau$
B. 0.500 $\tau$
C. 0.693 $\tau$
D. $\tau$
E. 2 $\tau$
参考答案: A
本题详细解析:
暂无
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