height from which the drop must have fallen. (Density of A mercury drop of radius 0.5cm falls from a height on a glass plate and breaks up into a million droplets, all of the same size. Find the 7.1 mercury=13600kg/m, surface tension of water%3D0.465N/m).
height from which the drop must have fallen. (Density of A mercury drop of radius 0.5cm falls from a height on a glass plate and breaks up into a million droplets, all of the same size. Find the 7.1 mercury=13600kg/m, surface tension of water%3D0.465N/m).
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Transcribed Image Text:and breaks up into a million droplets, all of the same size. Find the
A mercury drop of radius 0.5cm falls from a height on a glass plate
height from which the drop must have fallen. (Density of
Ans: The diameter of the
EXERCISE 7
7.1
mercury=13600kg/m, surface tension of water-D0.465N/m).
A capillary tube 2mm in diameter is immersed in a beaker of mercu
The mercury level inside the tube is found to be 0.5cm below the level
of the reservoir. Determine the contact angle between the mercury
and the glass. (T=0.4N/m, pm =
Calculate the density of paraffin oil, if a glass capillary of diameter
0.25mm dipped in paraffin oil of the surface tension 0.0245N/m rises
to a height of 4cm. (Angle of contact of paraffin oil with glass is 28°
and g-9.8m/m2).
A raindrop of diameter 4mm is about to fall on the ground. Calculate
the pressure inside the raindrop. (Surface tension of water
T=0.072N/m, atmospheric pressure.
The total energy of free surface of a liquid drop is 2n times the surface
tension of the liquid. What is the diameter of the drop?. (Assume all
7.2
13.6 x 10 kg/m³).
7.3
7.4
7.5
terms in SI unit).
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