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Superimposed free convection over forced convection will yield higher heat trans- fer coefficients for: (a) gas heating in a7.35 Compared to the constant-viscosity case, a consideration of variable viscosity at a cross section for the liquid heating7.12 For the boundary condition, the following are kept uniform and constant for developing flow in a tube: (a) heat flux alo

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Answer #1

7.38 answer is c .

7.39 answer is b

7.40 answer is a

7.12 please specify third boundary condition

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