Physics Unit30: Nuclear Physics and Radioactivity (id: 46c177647)

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]
The half-life of rad 3n5 g3yd5ssgqioactivp lm+- *fljgq(e iodine-137 is 8.0 days. How many iodine nuclei are necessary p(l+l*-gqjfm to produce an activity of $1.0 \; \mu Ci$?

A. $2.9 \times 10^{9}$
B. $4.6 \times 10^{9}$
C. $3.7 \times 10^{10}$
D. $7.6 \times 10^{12}$


参考答案:  C


本题详细解析: 暂无

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