A gas flows steadily in a 2.0−cm-diameter circular tube with a uniform velocity of 1.0 cm/s and a density rhoο . At a cross section farther down the tube, the velocity distribution is given by V=Uο[1−(r/R)²], with r in centimeters. Find Uο , assuming the gas density to be rhoο[1+(r/R)²]
