Hydraulics and Fluid Mechanics in ME
Froude number is significant in

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

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Hydraulics and Fluid Mechanics in ME
The meatcentric height is the distance between the

Centre of gravity of the floating body and the centre of buoyancy
Centre of gravity of the floating body and the metacentre
Original centre of buoyancy and new centre of buoyancy
Metacentre and centre of buoyancy

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