Air flows steadily between two sections in a long, straight portion of 4 in. inside diameter pipe (D1=D2). The uniformly distributed temperature and pressure at each section are p1=100psia, p2=18.4psia, T1=540 R and T2=453 R. The average velocity air velocity (nonuniform velocity distribution) at section 2 is 1000ft/s (V2=1000ft/s). A) Calculate the density of air flow ate sections 1 and 2. B) calculate the mass flux through section 1.