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# Hw7Sol - skin friction is 6.28 ti~ncs largcr t h a ~ ~ the...

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CHAPTER I9 0.4471 m/scc 1 milhr 1 1.323 (a) Cr= -= 1.328 ,Em Noting that drag exists on both the bnlton~ and top surfaces, we have Df 2 qm S Cr= 2(1/2)(1 .23)(63.04)~(9.75)(1.6)(5.04 x I 0") = Note that turbulent

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Unformatted text preview: skin friction is 6.28 ti~ncs largcr t h a ~ ~ the laminar value. - - - - 5 . 0 ~ 19.2 (a) =-- (5-OI(1.6) 3.0 J ,05 = d R e . - w 0 . 3 7 ~ (0.37)(1.6) = 2.5 J n, = p d - (b) = T- Rel (6.93~10' )I!'...
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