Find value of surface tension if contact angle is 0 and after lowering tube height of liquid is 15 cm and radius is 0.015 cm (density = 900 kg/`(m^3)`) (g = 10 m/`(s^2)`

Mercury has an angle of contact of 120^(@) with glass. A narrow tube of radius 1.0mm made of the glass is dipped in a through containing mercury. By what amount does the mercury dip down in the tube relative to the liquid surface outside. Surface tension of mercury at the temperature of the experiment os 0.5 N//m and density of mercury is 13.6xx10^(3) kg//m^(3) . (Take g = 9.8 m//s^(2)) .

A capillary of radius 0.15mm is dipped in liquid of density 'rho' = 667 kg/m^3. If surface tension of liquid is 1/20 N/m then find height upto which liquid rises in capillary. Angle of contact between liquid and capillary tube is 60^@ . (g=10m/s^2)

An annular disc of radius r_(1 )= 10 cm and r_(2) = 5 cm is placed on a water surface. Find the surface tension force on the disc if we want to pull it from water surface. Take coefficient of surface tension as sigma= 7 xx10^(-3) N//m, g = 10 ms^(-12) .

When a long capillary tube of radius 0.015 cm is dipped in a liquid, the liquid rises to a height of 15 cm within it. If the contact angle between the liquid and glass to close to 0^@ , the surface tension of the liquid, in milliNewton m^(-1) , is [rho_("liquid") = 900 kgm^(-3), g = 10 ms^(-2)] (give anwer is closet integer)

If 103 cm^(3) of aluminium has a mass of 0.280 kg. Find its density in kg//m^(3)

A capillary tube of radius 0.20 mm is dipped vertically in water. Find the height of the water column raised in the tube. Surface tension of water =0.075Nm^-1 and density of water =1000 kgm^-3. Take g=10 ms^-2 .

When a glass capillary tube of radius 0.015 cm is dipped in water, the water rises to a height of 15 cm within it. Assuming contact angle between water and glass to be 0°, the surface tension of water.is [pwaler = 1000 kg m^(-3) , g = 9.81 m s^^(-2) ]

A narrow capillary tube is dipped 10 cm below water surface and a liquid bubble of radius 2 mm formed at the lower end by blowing air through the tube. a. Calculate the excess pressure due to surface tension. b. What is the pressure required in the tube in order to blow a hemispherical bubble at its end in water? The surface tension of water at temperature of the experiment is 7.30xx10^(-2) N//m . 1 atmospheric pressure = 10^(5) Pa , density of water = 1000 kg//m^(3)

A U- tube is made up of capillaries of bores 1 mm and 2 mm respectively. The tube is held vertically and partically filled with a liquid of surface tension 49 "dyne"//"cm" and zero contact angle. Calculate the density of the liquid of the difference in the levels of the meniscus is 1.25 cm .

If 103 cm^(3) of aluminium has a mass of 0.280 kg. Find its density in g//cm^(3)