Assume a car's exhaust system can be approximated as 14 ft of 0. 125-ft-diameter cast-iron pipe with the equivalent of six 90 degree flanged elbows and a muffler. (See Video V8. 5) The muffler acts as a resistor with a loss coefficient of K_L = 8. 5. Determine the pressure at the beginning of the exhaust system if the flowrate is 0. 10 cfs, the temperature is 250 degree F, and the exhaust has the same properties as air. Mu = 4. 7 times 10^- 7 lb. S/ft^2 rho = 1. 74 times 10^- 3 slugs/ft^3 Element = 0. 00085 ft