A pipe carrying water has a radius of 1.0 cm.If the flow velocity is 9.0 cm/s,which of the following characterizes the flow? Take the viscosity of water to be 1.0 × 10−³ N⋅s/m. A) streamlined B) unstable C) turbulent D) stagnant

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Quizplus · Accepted Answer

The flow is characterized by the Reynolds number, Re = (density × velocity × diameter) / viscosity. For water, density is approximately 1000 kg/m³. Converting units and calculating, Re = (1000 kg/m³ × 0.09 m/s × 0.02 m) / (1.0 × 10^-3 N⋅s/m²) = 1800. Since Re < 2000, the flow is streamlined (laminar).

A Pipe Carrying Water Has a Radius of 1