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e) A small needle can be floated on the surface of the water. 2. Role of surface tension on human health: Surface tension changes in biological phenomena can determine various diseases in the human body. 3. Industrial applications: Surface tension is an important factor in industrial processes.
This is the same thing that makes insects like water strider to walk on water effortlessly or the floating of a paperclip. Thus, the surface tension formula is: Surface tension = (surface force)/ (length force acts) γ = F /d. Over here: Γ refers to the Surface tension. F is the force which applies to the liquid.
A glass rod of radius 1mm is inserted symmetrically into a glass capillary tube with inside radius 2mm Then the whole arrangement is brought in contact with the surface of water.Surface tension of water is 7 × 10 − 2 N / m.To what height will water rise in the capillary (θ = 0 o)
A glass contains some water at room temperature 20 0 C. Refrigerated water is added to it slowly. When the temperature of the glass reaches 10 0 C, small droplets condense on the outer surface. Calculate the relative humidity in the room. The boiling point of water at a pressure of 17.5 mm of mercury is 20 0 C and at 8.9 mm of mercury it is 10 0 C.
Surface tension is the property of liquid which arises due to the fact that the molecules of the liquid at the surface are in a different situation than those in the interior of the liquid. A molecule lying inside the liquid is surrounded by other molecules and so is attracted equally in all directions. Hence, the net force of attraction acting ...
Mar 13, 2018 · Answer link. .surface tension of water helps creatures (mostly of insecta class such as water striders) to walk on water. .it also helps water to move up the xylem tissue of higher plants without breaking up. surface tension results from hydrogen bonding in water molecules thus water molecules are held together by force making water surface ...
Apr 23, 2017 · Therefore, since water molecules on a liquid surface are harder to push down on the surface tension is higher for water than for ethyl alcohol. Water has greater degrees of hydrogen-bonding in the bulk liquid. Ethyl alcohol has some hydrogen-bonding, but one side of it is a hydrocarbon ("CH" bonds), so the hydrogen-bonding in the big picture is ...
Surface Tension is a property of liquid at rest by virtue of which a liquid surface gets contracted to a minimum area and behaves like a stretched membrane. An increase in temperature of water (or any liquid) leads to an increase in kinetic energy of molecules. Thus, intermolecular forces among molecules are lowered and a decrease in surface ...
The surface tension of sap is 7.28 × 10 − 2 N m − 1 and the angle of contact is 0 o. The maximum height to which sap can rise in a tree through capillarity action is ( ρ s a p = 10 3 k g m − 3 )
Since water wets the cube, the angle of contact is zero and force of surface tension acts vertically downwards. So it is buoyed down by surface tension. ∴ 800 × 10 − 3 + 4 × 0.1 × 0.07 = ( 0.1 2 x ′ p ) g
