Fluid dynamics & flight: Use of Mach number. Mach number relates an object’s speed to the local speed of sound in the medium. Choose the correct option.

Q: Fluid dynamics & flight: Use of Mach number. Mach number relates an object’s speed to the local speed of sound in the medium. Choose the correct option.

Concept Mach number = object speed / speed of sound (subsonic, transonic, supersonic, hypersonic regimes). Final Answer Aircraft and high-speed gas flows (speed relative to sound)

Difficulty: Easy

Aircraft and high-speed gas flows (speed relative to sound)
Ocean currents
Plate tectonics
Electrical conduction

Correct Answer: Aircraft and high-speed gas flows (speed relative to sound)

Explanation:

Concept

Mach number = object speed / speed of sound (subsonic, transonic, supersonic, hypersonic regimes).

Final Answer
Aircraft and high-speed gas flows (speed relative to sound)

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