因分子直径的数量级是10^-10m,则有:
油的体积是V=Sh=100km^2*10^-10m=100*10^6m^2*10^-10m=0.01m^3
假如一湖面的面积是100平方千米,现要在该湖面铺上一层单个分子直径厚的薄油层,请估计需多少体积的油.
假如一湖面的面积是100平方千米,现要在该湖面铺上一层单个分子直径厚的薄油层,请估计需多少体积的油.
计算题.
计算题.
物理人气:759 ℃时间:2020-04-16 17:01:47
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