Capillary rise of 3 mm is noticed when a glass tube is immersed in a container containing oil of specific gravity 0.64. The contact angle of oil is 190 and surface tension of the oil at 200C in contact with air is 0.088175 N/m. Find the following:           (i) Mass density of the oil in kg/m3     (ii) Capillary rise of oil in the glass tube in m of oil

Two capillary tubes with 2.4 mm and 1.5 mm inside diameters were inserted into a liquid of density 0.85 g cm³. Calculate the surface tension of the liquid if the difference between the capillary rises in the tubes is 1.5 cm. Assume contact angle is 0.

Give explanations

Some manometers are constructed as in Fig. , whereone side is a large reservoir (diameter D ) and the other sideis a small tube of diameter d , open to the atmosphere. Insuch a case, the height of manometer liquid on the reservoirside does not change appreciably. This has the advantagethat only one height needs to be measured rather than two.The manometer liquid has density ρ m while the air has densityρ a . Ignore the effects of surface tension. When there isno pressure difference across the manometer, the elevationson both sides are the same, as indicated by the dashedline. Height h is measured from the zero pressure level asshown. ( a ) When a high pressure is applied to the left side,the manometer liquid in the large reservoir goes down,while that in the tube at the right goes up to conserve mass.Write an exact expression for p 1gage , taking into account themovement of the surface of the reservoir. Your equationshould give p 1gage as a function of h , ρ m , and the…