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0.80 m3/s of water flows in a horizontal smooth rectangular duct of height 0.50 m. The...

0.80 m3/s of water flows in a horizontal smooth rectangular duct of height 0.50 m. The ratio of width to height is 1:2. The whole cross-section remains wet when the water is flowing inside the duct. Calculate the head loss in meter (with 2 decimal places) in 30 m of this duct. (T = 20 °C; friction factor: f = 0.316Re-0.25)

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