Because we do try to give as much partial credit as possible in these exams, since there are a lot of places where small mistakes can result in the wrong answer.
因为我们会尽量把能给你的步骤分都给你,在对于这种考试时,因为有很多地方,只要出一点小问题就会导致最后结果出错。
So the partial pressure or the pressure by which you have this triple point, happens to be 6.1 times 10 to the minus 3 bar.
而要小得多,事实上,水的三相点时的压强是6。1毫巴。
And, coincidently, what is the partial of energy with respect to distance?
巧合的是,能量对距离的导数是什么?
All right, so implied consent. That's a partial answer to this challenge.
好,默认的同意,部分解答了这个问题。
A It tells me that the partial of A with respect to T at constant V is minus S. Right?
他告诉我们,在恒定体积下对温度的微分等于负S,对吗?
We have discovered that this partial derivative that appears in the definition, the abstract definition of the differential for internal energy, is just equal to the constant volume heat capacity.
我们还发现,这个偏微分出现在了,内能的偏微分,定义式中,它也就是热容。
So, using those, now, what happens if we take the second derivative of A, the mixed derivative, partial with respect to T and the partial with respect to V.
如果我取A的二阶导数,混合导数,对T偏微分,再对V偏微分。
OK, so for a constant volume process, du we can write du, partial derivative of dT u with respect to T at constant V, dT, dv plus partial derivative of u at constant V, dV.
好,对于一个恒定体积的过程,我们可以写出,等于偏u偏T,V不变,加上偏u偏V,T不变。
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