Air ( = 1.2 kg/m3 and kinematic viscosity, = 2 10-5 m2/s) with a velocity of 2 m/s flows over the top surface of a flat plate of length 2.5 m. If the average value of friction coefficient is Cf =1.328 Rexthe total drag force (in N) per unit width of the plate is _________.

Air ( = 1.2 kg/m3 and kinematic viscosity, = 2 10-5 m2/s) with a

1.	Air ( = 1.2 kg/m3 and kinematic viscosity, = 2 10-5 m2/s) with a velocity of 2 m/s flows over the top surface of a flat plate of length 2.5 m. If the average value of friction coefficient is Cf =1.328 Rexthe total drag force (in N) per unit width of the plate is _________.
A.	0.1159
B.	0.0259
C.	0.0157
D.	0.0159
Answer» E.

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Air ( = 1.2 kg/m3 and kinematic viscosity, = 2 10-5 m2/s) with a velocity of 2 m/s flows over the top surface of a flat plate of length 2.5 m. If the average value of friction coefficient is Cf =1.328 Rexthe total drag force (in N) per unit width of the plate is _________.

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