Example
Water flows in a pipe 2 cm in diameter and 30 m long; the pipe is running full. Find the head loss when the temperature is 5C and the velocity is 10 cm/s.
 (see Fig. A.3, p. 764, Text)
 flow is laminar
head loss:   of water
 of water
Oil at 60F has a specific gravity of 0.92 and kinematic viscosity of 0.0205 ft2/s. Find the horsepower required to pump 50 tons of oil per hour along a pipeline 9 in diameter and one mile long.
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