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- Find the capillary rise in the tube shown below for an ethylalcohol-air-glass interface if the tube radius is 1mm and surface tension of ethylalcohol is 0.022N/m and sg=0.79.A capillary tube of diameter 2 mm is placed in a reservoir of water, and a similar capillary tube is placed in a reservoir of methanol. If both tubes are made of clean glass and the water-glass and methanol-glass contact angles are both approximately equal to 0°. Surface tension of water is 0.073 N/m. Surface tension and density of methanol are 0.0225 N/m and 791 kg/m3, respectively. 8.0 Determine the rise of methanol. a.) 7.4 mm b.) 5.8 mm c.) 14.9 mm d.) 2.9 mm e.) 9.0 Determine the rise of water. a.) 7.4 mm b.) 5.8 mm c.) 14.9 mm d.) 2.9 mm e.).A liquid has a relative density of 0.8 and a kinematic viscosity of 2.3 centistoke. Deterimineits: (i) Weight density and (ii) Dynamic viscosity in Pa.sec 2:
- 1. When the force of 3 mN is applied to the plate the line AB in the liquid remains straight and has a velocity of 0.6x103 m/s. If the surface area of the plate in contact with the liquid is 0.6 m2, determine the approximate viscosity of the liquid. В в B B' 3 mN 4 mm AQ2: A drop of liguid foluen is kept al uniform temperkure t 299 K and is suspended in air by a fine wire. The initid radius at r= 2mm. The vapor pressure of foluene 299K is f=384 Kfe and the density of liguid toluene is 366 ky Im 3. Derive equation for the time tp for the drop b evupurete Completely in a large volume of still air Calculate the tine in seconds for Complete evaporahion.No. 1. (10 Pts) An aluminum pipe with a length of 60 m at a temperature of 10°C rests freely on the ground. An adjacent steel pipe at the same temperature is 5 mm longer than the aluminum pipe. (a) At what temperature (degrees Celsius) will the aluminum pipe be 15 mm longer than the steel pipe? (Assume that the coefficients of thermal expansion of aluminum and steel are aa=23x10-6/"C and as=12x10-6/ c, respectively.) (b) What is the axial stress developed in the aluminum pipe when the temperature was increased? 5 mm Aluminun Steel Figure No. 1
- The topic is all about thin-walled pressure vessels: Please use pen and paper and show the conversion in the solution.Several liquids are layered inside a tank with pressur- ized air at the top. If the air pressure is 3.2 kPa, calcu- late the pressure at the bottom of the tank if the lay- ers include 20 cm of SAE 10 oil, 10 cm of water, 15 cm of glycerin, and 18 cm of carbon tetrachloride.The cyclindrical tank with hemispherical ends shown in Fig. contains a volatile liquid and its vapor. The liquid density is 800 kg/m', and its vapor density is negligible. The pressure in the vapor is 120 kPa (abs), and the atmospheric pressure is 101 kPa (abs). Determine: (a) the gage pressure reading on the pressure gage; and (b) the height, h, of the mercury manometer. Open Vapor 1m 1 m Liquid 1 m Mercury E E
- A capıllary glass tube of 0.1 mm internal diameter is immersed vertically in a beaker full of waten Assuming the tube to be perfectly clean and wet, determine the height of the capillary rise of water in the tube when the room tamp is 20°C. Given at 20°C unit weight of water = 0.9980 gm/cc and surface tension 72.8 dyne/cm. %3DA 0.6 m square glass plate slides on a plane with a slope of 30° from the horizontal (Figure 1.2). Knowing that the plate weighs 30 N and that it acquires a constant speed of 5 cm/s, it is asked: determine the dynamic viscosity of the film 0.1 mm lubricant, which is between the plates. Assume the velocity diagram linear in the fluid film). (R: 0.0833 Ns/m2) 5cm/s Figure 1.2 0.1 mmKerosene is placed inside a glass capillary tube having a radius of 0.5 mm. The kerosene inside the tube is measured to have a standing height of 59mm. Determine the true static height of the kerosene using a surface tension value of 0.035 N/m and Sg=0.8.