Air with a density of 0.45 kg/m enters an experimental jet engine at a rate of 190 m/s. The inlet area of the engine is 9.0 fts. After fuel is burned, the air and combustion byproducts leave the engine with a velocity of 670 m/s through an outlet area of 8.0 ft. What is the average density of the gas exiting the engine? Express your answer in kg/m, slugs/ft , and Ibm/fts. Air Air + Combustion density (kg/m3) kg/m 3 density (slugs/ft3) slugs/ft 3 density (Ibm/ft3) Ibm/ft 3