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4) For a smooth pipe flow of water with Re = 20,000, the friction factor was found to be f = 0.026 (from Moody chart). If the

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fa ( x 0.09) 20 VO Re : 30,000 = RO4 Dnew 20 MO 윽 Rnew 40,000 - 2x 20,000 f x 004) ①. 0223 - 2 9 60,0 000 0.022 Answer 2

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