Mach number is the ratio of the speed of the _____________________?
Correct answer: A. Fluid to that of the sound
- A. Fluid to that of the sound
- B. Light to that of the fluid
- C. Fluid to that of the light
- D. Sound to that of the fluid
Explanation
Mach number compares a fluid’s velocity with the local speed of sound, so it is defined as fluid speed divided by sound speed.
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