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I must confess that the recent "flow" discussions caught me me by
surprise. I would like to explore my understanding of how others
use the term ...
Consider the Joule Mechanical Equivalent of Heat experiment:
Which of you would prefer to think of the process as follows:
The Earth does work on the weights as they fall.
The weights do work on the strings.
The strings do work on the paddle wheel.
The paddle wheel does work on the water molecules.
The average KE of the water molecules increases.
The temperature of the water increases.