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
above the center of gravity
at the center of gravity
below be center of gravity

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Hydraulics and Fluid Mechanics in ME
In open channels, the specific energy is the

Total energy per unit discharge
Total energy measured with respect to the datum passing through the bottom of the channel
Total energy measured above the horizontal datum
Kinetic energy plotted above the free surface of water

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