Hydraulics and Fluid Mechanics in ME
Buoyant force is

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

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Hydraulics and Fluid Mechanics in ME
Froude number is significant in

Simultaneous motion through two fluids where there is a surface of discontinuity, gravity forces, and wave making effect, as with ship's hulls
Supersonics, as with projectile and jet propulsion
Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.
All of the listed here

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