The ratio of inertial forces to elastic forces is called the __________ number?
Correct answer: D. Mach
- A. Reynolds
- B. Weber
- C. Euler
- D. Mach
Explanation
The Mach number is the ratio of inertial forces to elastic forces, and it also equals the flow velocity divided by the speed of sound. Reynolds number compares inertial and viscous forces, which is the usual distractor.
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