Hydraulics and Fluid Mechanics in ME
In an immersed body, center of pressure is

could be above or below e.g. depending on density of body and liquid
below be center of gravity
at the center of gravity
above the center of gravity

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Hydraulics and Fluid Mechanics in ME
A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

Glass tube is cheaper than a metallic tube
It is easier to see through the glass tube
All of these
It is not possible to conduct this experiment with any other tube

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