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Bow occurs at what Mach number?

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+1 vote
in Fluid Mechanics by (118k points)
Bow occurs at what Mach number?

(a) Mach number = 0

(b) Mach number is negative

(c) Mach number = 1

(d) Mach number greater than 1

This question was addressed to me in an international level competition.

The doubt is from Velocity of Sound or Pressure Wave in a Fluid in chapter Compressible Flow of Fluid Mechanics

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Correct answer is (d) Mach number greater than 1

The explanation is: Bow occurs when the Mach number is greater than one. It occurs at the upstream of the front of a blunt object. It happens when the velocity exceeds Mach 1.

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