Question 1 Yiscosity Benzene at 20°C has a viscosity of 0.000651 Pas. What shear stress is required to deform this fluid at a strain rate of 4900 s Question 2 (Answer: -3.19 Pa A plate separated by 0.5 mm from a fixed moves at 0.50 m/s under a force per unit area of 4.0 N/ Determine the viscosity of the fluid between the plates. (Answer: 0.00400 Na/m 4.00 mPa.) Question 1 Surface Tension Find the capillary rise in the tube shown in Figure 1 for a water-air-glass interface (0-0") if the tube radius is 1 mm and the temperature is 20°C. Use surface tension, a 0.0728 N/m. (Answer: h 0.0148 m or 14.8 mm) 2r Figure 1 Question2 Find the capillary rise in the tube shown in Figure 1 for a mercury-air-glass interface with 8- 130° if the tube radius is I mm and the temperature is 20°C. Use surface tension, a=0.514 N/m and mass density, p-13 570 kg/m². Question 3 (Answer: h--0.0050 m or -5.0 mm) Find the angle the surface tension film leaves the glass for a vertical tube immersed in water if the diameter is 0.25 in and the capillary rise is 0.08 in. Use a 0.005 lb/ft. Use mass density, p= 1.94 slugs/f and gravity acceleration, g-32.2 ft). (Answer: 8-64.3°) NAME- MECH 2301-FLUID MECHANICS 1 Tutorial 1 (cont') MATRIC NO- Question 1 Compressibility (Bulk Modulat) A liquid compressed in a cylinder has a volume of 1000 um' at IMN/m and a volume of 995 cm' at 2 MN/m². What is its bulk modulus of elasticity (KY) Question 2 (Answer: -200 MPa) If K-2.2 GPa is the bulk modulus of elasticity for water, what pressure is required to reduce a volume by 0.6 percent? (Answer: P-0.0132 GPa or 13.2 MPa) Ideal Gas Question 1 A gas at 20°C and 0.21 MPa has a volume of 41 ml and a gas constant (R) of 210 N/(kg.K). Determine the density and mass of the gas. Question 2 (Answer: 0.140 kg) One kilogram of hydrogen is confined in a volume of 200 L at -45°C. What is the pressure if R is 4.115 kJ/kg.K? Question 3 (Answer: P 4.691 x 10 Pa or 4.691 MPa) The temperature and pressure of nitrogen in gas are 28°C and 600 kPa, respectively. Determine the specific weight of the nitrogen. Given R is 30.3 N/kg.K Question 4 (Answer: y 0.658 kN/m²) Air is kept at a pressure of 200 kPa and a temperature of 30°C in a 500 mal container. What is the (Answer: m-1.15 kg) mass of the air? Given R is 287 N/kg.K Question 5 a) Calculate the density, specific weight, and specific volume of oxygen at 20°C and 40 kPa. b) If the oxygen is enclosed in a rigid container, what will be the pressure if the temperature is reduced to -100°C. Given R-260 N/kg.K (Answer: p=0.525 kg/m, y-5.15 N/m, V, 1.90 m/kg, P-23.6 kPa)