Flow Through Pipes

For laminar flow in a pipe, the Fanning friction factor depends on Reynolds number according to the relation?
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Under otherwise uniform conditions Fanning friction factor for a rough pipe is?
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Applying a pressure drop across a capillary results in a volumetric flow rate Q under laminar flow conditions. The flow rate, for the same pressure drop, in a capillary of the same length but half the radius is.
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Two identical pressure gauges at the foot of two storage tanks that are at the same elevation, the water levels in the tanks are the same, one tank holds 1,00,000 litre (tank 1), the other holds 1000 litre (tank 1),. Say which one is true?
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For hydraulically smooth pipe, the resistance to flow depends only on the?
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