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如果我们的大气中氮气和氧气压力双翻倍?

P =ρgh,大气的高度会影响增加氮气和氧气的质量或高度保持不变吗?谢谢!

回答

开始的问题是措辞如此……P = \ρgh美元,大气的高度会影响增加氮气和氧气的质量或高度保持不变吗?谢谢!- - -密度是质量/体积。你只能添加质量系统两种方式中的一种。一种方法是保持密度恒定。在这种情况下,必须增加体积。因为体积面积乘以高度,面积或高度必须增加。在地球上,表面的空气不能横向扩展本身。面积是恒定的。 Therefore, we learn —> ANSWER 1: As mass is added to air on the earth under the condition of constant density, the height of the air above the earth will increase. Another way to add mass is to allow density to change. The intuitive first response is that, when we add mass, we expect density will increase. At the limit, this is the same as keeping volume constant. For this case, we learn —> ANSWER 2: As mass is added to the air on the earth under the condition where density increases, the limiting case is one where the height of the air above the earth will not change. Finally, we could argue that we want to allow volume to expand somewhat as mass is added. The result is an answer between the two above. Note that air is compressible. Its density will change as a function of pressure and temperature. By the ideal gas law, $\rho = M n / V = M p / R T$ where molar mass, moles, volume, pressure, gas law constant, and temperature are used. The overall effect is that density is not a constant for the system of air above the earth. Any other answer requires that we have clearer specifications of the system. We correspondingly learn, either the equation quoted is of no consequence to the question or the question is not phrased properly in respect to the equation quoted.

编辑总结

取消

\ begingroup美元为了更好地理解这种关系我想我应该为行星大气层研究规模高度。谢谢你！ \ endgroup美元
- - - - - -马修·阿姆斯特朗
2018年8月2日15:34
\ begingroup美元为了更好地理解这种关系我希望你首先定义问题陈述更好。,问题是相当模糊的,充满了谜题。因此我的答案与警告说。 \ endgroup美元
- - - - - -杰弗里·J魏玛
2018年8月2日18:05
1

\ begingroup美元我添加了一个评论,空气是可压缩的。 \ endgroup美元
- - - - - -杰弗里·J魏玛
2018年8月2日18:05

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创建代码用引号”或式子~篱笆
' ' '
像这样
' ' '
添加语言标识符来突出显示的代码
”“python
def函数(foo):
打印(foo)
' ' '
把段落之间的回报
在结束linebreak添加2个空间
_italic_或* *的* *
报价将>开始的
做链接(尽量使用https)
< https://example.com >
(例子)(https://example.com)
< a href = " https://example.com " > < / >示例
MathJax方程罪\ \ ^ 2θ美元

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