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Water leaves a narrow hose nozzle much faster than it travelled in the hose. That speed-up follows from:
AContinuity
BCavitation
CViscosity
DTurbulence
Answer & Solution
Correct answer: A. Continuity
1. The cross-section narrows.
2. The same volume must still pass.
3. It follows from continuity.
_Source: OpenStax University Physics Volume 1, Chapter 14, Fluid Mechanics._
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