2. [20 points| An oil that has a density of 880 kg/m' and a viscosity of 4 cP is flowing upward in a 3-in Sch. 40 commercial steel pipe as shown in Figure B2. What is the mass flow rate in kg/s of the oil if the height difference of the mercury (13,600 kg/m?) manometer before and after an orifice (5.4103-cm diameter, sharp edge) is 10 cm? 1 2 cm Orifice 6 cm Oil Figure B2. 1.00 050 0.90 Sharp-edged orifice diameter ratio nie diameter side pe diameter Rotameter with lost shape 0.75 070 0.80 0.65 060 050 0.40 0.70 Rotameter with Toat shape Meter coefficient (C, or CR 020 0.60 Rotaneter with float shape 0.50 0.40 0.30 10 20 40 60 102 103 Reynolds number 104 105