Physics Unit1: Introduction Measurement & Estimating (id: f0bc318fb)

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 Mars, $6.40\times {10}^{23}kg$, is about one-tenth that of the Earth, and its radius, 3395 km, is about half that of Earth. What is the mean density of Mars in $kg/m^3$?

A. $9.76\times {10}^2$
B. $1.95\times {10}^3$
C. $3.90\times {10}^3$
D. $7.81\times {10}^3$


参考答案:  C


本题详细解析: 暂无

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