1.A 3000 lb car has a maximum speed of 140 mi/h with 16-in radius wheels, a gear reduction of 3.5 to 1, and a drivetrain efficiency of 92%. it is known that at the cars top speed the engine is producing 220 ft-lb of torque. if the cars frontal area is 25 ft^2, what is its drag coefficient?
2.Each month the speedy dry Cleaning company buys 1 barrel (0.160 m^3)of dry cleaning fluid . Ninety percent of the fluid is lost to the atmosphere and 10 percent remains as residue to be disposed of.The density of the dry cleaning fluid is 1.5940 g/ml .Draw a mass balance diagram and estimate the monthly mass emission rate to the atmosphere in kg/mo.