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← ScienceDuring rapid drainage from a tank through a pipe, which outcome increases when the pipe narrows?
A)Fluid velocity and cavitation risk✓
B)Viscosity and density equilibrium
C)Increased static pressure throughout
D)Reduced turbulent Reynolds number magnitude
💡 Explanation
Cavitation risk rises following Bernoulli's principle; increased velocity reduces pressure because total energy is conserved. Therefore, higher velocity amplifies cavitation risk, rather than equalizing viscosity or increasing static pressure evenly; Reynolds number decreases.
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