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← ScienceWhich outcome occurs when fluid velocity nears sonic speed?
A)Compressibility effects become significant.✓
B)Dynamic viscosity decreases linearly.
C)Laminar flow always becomes turbulent.
D)Density remains perfectly constant.
💡 Explanation
Significant compressibility emerges near sonic velocity because the fluid's density changes drastically via the Equation of State; therefore shock waves may occur, rather than the behavior seen at lower Mach numbers with negligible density fluctuations.
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