Question

5) gasses do not have a free surface why?​

Answer 1

Answer:

Thus gases have no free surfaces because there is no surface in the first place, and if you assume the surface of container to be the surface then there is no stress acting upon the gas molecules at that assumed surface (justification: they are always in random motion in the containers total volume)....

Explanation:

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Answer 2

Answer:

because gases in a container have no stress acting upon it so gas got free molecules.

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