Anewtonian fluid of viscosity u=0.05 pa. s and density p- 860 kg/m2 is flowing at a rate of 100 liters/min through a straight circular pipe of i. d.-1.05 in. evaluate (a) the mean velocity, (b) the reynolds number re, (c) the mass flow rate (d) the shear strain rate at the pipe wall and (e) the kinetic energy per unit volume, using the appropriate value for a. use si units and write the unit with each numerical answer to three significant figures. 2. a pressure gauge at the top of a vertical oil well registers 140 bars (=14 mpa). the oil well is 6000 m deep and filled with natural gas down to a depth of 4700 m and filled with oil (density=700 kg/m3) the rest of the way to the bottom of the well at 15°c. the compressibility factor z 0.80 for natural gas and its molecular weight is 18.9. determine the pressure at (a) the natural gas-oil interface and at (b) the bottom of the well at 15°c.