Can windmills do work by using different pressures?
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If that’s the case, the pressure at the foot of the mountain is high, while the pressure at the top is low. If the windmill is placed on the hillside, how can it not spin? This post was last edited by *aohe8888 on 2009-2-19 15:44.]
The pressure difference between the mountain top and the foot of the mountain is quite large, but the pressure difference at the location where the wind turbine is placed can be considered negligible. It’s similar to the relationship between a point and a line; it’s basically a matter of common sense
What if the resistance is infinitesimally small? Can it be transferred?
Theoretically, it’s possible: where there is a pressure difference, there is convection, and thus the windmill can rotate. In general, it’s not the presence of a pressure difference that enables rotation; rather, it is the pressure difference that generates convection, which in turn allows rotation to occur.
But isn’t the answer given for question * in Chapter 1 of Physical Chemistry Thermodynamics incorrect? ? I don’t know why right now; could some expert give me some advice?