The maximum diameter that a capillary tube can have to ensure that a capillary rise of at least 6 mm is achieved when the tube is dipped into a body of liquid with surface tension = 0.08 N/m and density = 900 kg/m³, is?
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- A thin-walled tube is subjected to torsion as shown. Determine the Area bounded by the median line, Ao. (in mm²) 80 L=6M t= 25 mm T=4 kN-m G= 70 GPaAssuming that pressure will increase at a uniform rate and there is no damping of the pressure wave. Water from a reservoir that flows through a 650mm pipe at 1.8m/s is completely stopped by a closure of a 160 m valve from the reservoir. The thickness of the pipe is 25mm, bulk modulus of water is 2.2x10⁹ Pa and E of steel is 1.4x10¹¹ Pa. Determine the following: a. Celerity of the pressure wave b. Equivalent bulk modulus of water c. Pressure on the pipe after closure of the valve d. Time required to avoid water hammer e. Water hammer pressure of the velocity will decrease to 1.2m/s f. Maximum permissible discharge after the outlet valve closure. ANSWER: d) t = 0.256 sec. e) Ph=pCAV = 749.8476 kPa f) Q = AV = 0.597 m³/s a) C = 1249.746m/s b) k' = 1.562x10⁹ Pa c) Ph=pCV = 2249.5428 kPa*A 40-lb, 0.8-ft-diameter, 1-ft-tall cylindrical tank slides slowly down a ramp with a constant speed of 0.1 ft/s as shown in Figure 1 below. The uniform thickness oil layer on the ramp has a viscosity of 0.2 lb s/ft2. Determine the angle, 0, of the ramp. 0.0025 ft T TANK 1 ft Figure 1 Ө OIL
- This is a mercury U-tube*acceleration = 4.905 m/s^2 to the right What is the gage pressure at A? in kPaAt a certain temperature, water rises inside 0.10in diameter capillary tube. How high will it rise if the wetting angle is zero and the surface tension is 0.005 lb/ft?A Shelby tube has outside diameter of 76.2 mm and wall thickness of 1.651 mm. What is the area ratio of the tube?
- An aluminum block (SG=2.5) has a dimension of 0.22 m x 0.22 m xh meters. It is floating in mercury (SG-13.6) and the submerged height of the block is 0.72 m. Determine the weight (kN) of the block.Find the capillary rise in a tube for a water glass interface (teta) = 0° if the tube radius is 1mm and the density is 1000 kg/m³. Surface tension of water is 0.0728 N/m.Problem# 2: Consider Darcy's experiment. hl= 95.0cm, h2 = 37.0cm, As =20.0cm, Q =3.5cm3/min, and the tube has a radius of 1.5cm. Calculate K and give your result in cm/sec. What kind of granular material might have a K value like this?
- 3.11 For the closed tank with Bourdon-tube gages tapped into it, what is the specific gravity of the oil and the pressure reading on gage C? 0.5 m Air 4 PA=50.0 kPa 1.0 m Oil 0.5 m B P= 58.53 kPa 1.0 m Water 0.5 m C Pc=? T= 10°C PROBLEM 3.11To close a gate valve it is necessary to exert two forces of 80 lb at opposite sides of a hand wheel 4 ft in diameter. Through an accident the wheel is broken and the valve must be closed by a thrusting bar through a slot in the valve stem and exerting a force 5 ft out from the center. Determine the force required and draw a free-body diagram of the bar. Refer to sample problem 5 to solve this problem.A spherical pressured tank of radius 1.5m is being designed by a civil engineer to be a storage of natural gas from the Malampaya gas field. The gas it will contain is subject to a change in temperature of 295 °C with an internal pressure of 20 MPa. The final design of the tank gives a 9 mm wall thickness with a Poisson's ratio of 0.28. Use a = 11.7x10 /°C and E = 200 GPa. %3D a. Determine the tangential/longitudinal stress. b. Change in radius.