When a 2-mm-diameter tube is inserted into a liquid in an open tank, the liquid is observed to rise 10 mm above the free surface of the liquid. The contact angle between the liquid and the tube is zero and the specific weight of the liquid is 1.2 X 104 N/m3. Determine the value of the surface tension for this liquid.
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- One side of the container has a 03-m square door that is hinged at its top edge. If the container is filled with water, determine the smallest force F that must be applied to the bottom edge of the door to keep it closed.A 1.6-mm-diameter tube is inserted into an unknown liquid whose density is 960 kg/m3, and it is observed that the liquid rises 5 mm in the tube, making a contact angle of 15°. Determine the surface tension of the liquid.A u_tube whose arms are open to the atmosphere. Now equal volumes of water and light oil. (density =49.4kg/m^3)are poured from different arms. A person blows from the oil side of the u_tube until the contact surface of the two fluid moves to the bottom u_tube, and thus the liquid levels in the two arms are the same .if the fluid height in each arm is 30in,Determine the gauge pressure the person exerts on the oil by blowing.
- When a 2-mm-diameter tube is inserted into a liquid in an open tank, the liquid is observed to rise 10 mm above the free surface of the liquid. The contact angle between the liquid and the tube is zero, and the specific weight of the liquid is 1.2 × 104 N/m3. Determine the value of the surface tension for this liquid. Show step-by-step, and explain each step. Thank you.Consider a differential manometer whose ends are connected to two different pipes A andB and containing different liquids at different levels. Let us assume that the pressure at point A is more than that at point B. Oil is in pipe A whose density 800 kg/m³ shows a difference in mercury levels as 100 mm. The height of oil between center of pipe A to the mercury level in left limb is 200 mm. Methanol (relative density 0.791) is in pipe B and the height of Methanol between center of pipe B and mercury level in the right limb is 5 cm. Calculate the difference in pressures at the two points A and B.A 30-ton, 4-m-diameter hemispherical dome on a level surface is filled with water. Someone claims that he can lift this dome by making use of Pascal’s law by attaching a long tube to the top and filling it with water. Determine the required height of water in the tube to lift the dome. Disregard the weight of the tube and the water in it
- Consider two identical glasses of water, one stationary and the other moving on a horizontal plane with constant acceleration. Assuming no splashing or spilling occurs, which glass will have a higher pressure at the (a) front, (b) midpoint, and (c) back of the bottom surface?For a rectangular closed vessel partially containing a liquid, with air space at the top portion, is it okay to assume that the pressure acting at the uppermost portion of the air space is equal to the pressure acting at the surface of the liquid?A flat steel plate is used to seal an opening 1 m wide by 2m high in the vertical wall of a large water (p =1000 kg/m^3) tank. When the water level in the tank is 15 m above the top of the opening, determine the magnitude of the resultant forceR exerted on the plate by the water pressure and the distance from the centroid of the area of the plate to the center of pressure.
- Consider a U-tube whose arms are open to the atmosphere. Now equal volume of water and light oil (ρ=790 kg/m3) are poured from different arms. A person blows from the oil side of the U-tube until the contact surface of the two fluids moves to the bottom of the U-tube, and thus the liquid levels in the two arms are the same. If the fluid height in each arm is 102 cm, determine the gage pressure the person exerts on the oil by blowing.A 2-m3 volume of water is contained in a rigid container.Estimate the change in the volume of the water when apiston applies a pressure of 35 MPa.You want to size a hollow sphere made of bronze with an outer radius re and an unknown inner radius ri, as shown in the attached figure. This hollow sphere must be immersed in water and must have a thickness e such that it can be suspended in the liquid. Determine the thickness of the hollow sphere for this condition to be met. To facilitate calculations, consider that the interior of the sphere is in a vacuum. The data needed to solve the problem are: re = 0.5 m rhow = 1000 kg / m3 rhobronze = 8300 kg / m3