Question

Continuum is fluids is predicted by using.
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Answer 1

There is nothing term like “fluid continuum” only for the fluid domain but in general, it is the continuum and it can be used with any kind of matter whether it is known to us or not! Because everything is made up of atom and molecule so understanding the something partly without its fundamental physical understanding will reflect different meaning.

Answer 2

Answer:

Whether a fluid is consider as a continuum or not depends upon ratio of Mean free path of fluid molecules and characteristic length of the section in which fluid is.