Physics Unit1: Introduction Measurement & Estimating (id: 8f1f64db8)

本题目来源于试卷: Physics Unit1: Introduction Measurement & Estimating，类别为 通用国际物理

[单选题]
The mass of an electron 50pcy7nsmck2 xq4n4s vdtzz+;h1jb u :f4w 0ris $9.1 \times 10^{-31} \; kg$. How many electrons will make a mass of 1.0 kg?

A. $9.1 \times 10^{30}$
B. $1.1 \times 10^{30}$
C. $9.1 \times 10^{31}$
D. $1.1 \times 10^{31}$


参考答案:  B


本题详细解析: 暂无

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