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Questions and Answers
What is the equation for Reynolds number (Re) used to discriminate between laminar and turbulent flows?
What is the equation for Reynolds number (Re) used to discriminate between laminar and turbulent flows?
- $Re = \frac{\mu VD}{\rho}$
- $Re = \frac{VD}{\mu \rho}$
- $Re = \frac{\rho VD}{\mu}$ (correct)
- $Re = \frac{V}{\mu D \rho}$
What is the equation of continuity for incompressible fluid?
What is the equation of continuity for incompressible fluid?
- $Q = A_1 + V_1 = A_2 + V_2$
- $Q = A_1/V_1 = A_2/V_2$
- $Q = A_1 - V_1 = A_2 - V_2$
- $Q = A_1V_1 = A_2V_2$ (correct)
What is the speed at which the water leaves the 2.0 cm diameter faucet tap, given that it fills a 2.5×10^-2 m^3 container in 30.0 s?
What is the speed at which the water leaves the 2.0 cm diameter faucet tap, given that it fills a 2.5×10^-2 m^3 container in 30.0 s?
- 3.14 m/s
- 2.65 m/s (correct)
- 2.20 m/s
- 1.98 m/s
What is the formula for the flow discharge (Q) in the context of fluid dynamics?
What is the formula for the flow discharge (Q) in the context of fluid dynamics?
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What is the Bernoulli equation used to describe?
What is the Bernoulli equation used to describe?
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