1.

Mach number is significant in?

A. supersonics, as with projectiles and jet propulsion
B. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
C. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls
D. all of fhe above
Answer» B. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc


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