Exercise 2: According to an appliance manufacturer, the 4-in.-diameter vent on a clothes dryer is not to contain more than 20 ft of pipe and four 90 elbows. Under these conditions determine the air volumetric flow rate if the gage pressure within the dryer is 0.20 inches of water. Assume both the specific weight and the kinematic viscosity of the heated air to be constant and equal to =0.0709lbffft3, and v==1.79104ft2/s.. respectively, and that the roughness of the vent pipe surface is equivalent to that of galvanized iron: Figure K: Schematic for Exercise 2, Moran\&Shapiro, 2002 KL(fVD)=3.87KL(fVD)=3.67)KL(fVD)=3.79KL(fVD)=3.74