Hydraulics and Fluid Mechanics in ME
Buoyant force is

Equal to the volume of liquid displaced
The resultant force on a body due to the fluid surrounding it
The resultant force acting on a floating body
The force necessary to maintain equilibrium of a submerged body

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

Kinetic energy plotted above the free surface of water
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

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