Flow over a rectangular plate produces an average wall shear stress of 1.2 pascals. Calculate the friction drag in units of N. The plate dimensions are 1.5 m by 2.0 m. The plate is inclined at 20 degrees with respect to the free stream. Choose the closest answer (N): 

(a) 3.4, 

(b) 3.6, 

(c) 4.2, 

(d) 6.8, or 

(e) 7.2.

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1.5 m 20° Flow Plate (1.5 x 2.0 m) T, = 1.2 Pa