Physics Unit30: Nuclear Physics and Radioactivity (id: a0d0c5220)

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]
How long will it takew 3ib2pbdfgpx9, 3mgb54 0mb ka)uhn; v0*hf e a 7 kum*6s0 gwi x(iv5ti$4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

A. $14,478 \; years$
B. $3245 \; years$
C. $2178 \; years$
D. $1993 \; years$


参考答案:  C


本题详细解析: 暂无

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