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The quantitative study of how fluids (gases and liquids) move.
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Ideal fluid flow in a frictionless pipe at same horizontal level
1)yes, just like for bigger objects.
2)Pressure at a point is defined to be the
$$\sum_{i=0}^n F_i/A_i$$
where $F_i$ is some external force(usually excluding gravity). You can imagine this force as a …