Problems - SurfaceTension: Air is introduced through a nozzle into a tank of water to form a stream of bubbles. If the bubbles are intended to have a diameter of 2 mm, calculate how much the pressure of the air at the tip of the nozzle must exceed that of the surrounding water. Assume that the value of surface tension between air and water as 72.7 x 10° N/m. A soap bubble 50 mm in diameter contains a pressure (in excess of atmospheric) of 2 bar. Find the surface tension in the soap film. Water has a surface tension of 0.4 N/m. In a 3 mm diameter vertical tube if the liquid rises 6 mm above the liquid outside the tube, calculate the contact angle.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Problems - SurfaceTension:
Air is introduced through a nozzle into a tank of water to form a stream of bubbles. If the bubbles are
intended to have a diameter of 2 mm, calculate how much the pressure of the air at the tip of the nozzle must
exceed that of the surrounding water. Assume that the value of surface tension between air and water as 72.7
x 10° N/m.
A soap bubble 50 mm in diameter contains a pressure (in excess of atmospheric) of 2 bar. Find the surface
tension in the soap film.
Water has a surface tension of 0.4 N/m. In a 3 mm diameter vertical tube if the liquid rises 6 mm above the
liquid outside the tube, calculate the contact angle.
Transcribed Image Text:Problems - SurfaceTension: Air is introduced through a nozzle into a tank of water to form a stream of bubbles. If the bubbles are intended to have a diameter of 2 mm, calculate how much the pressure of the air at the tip of the nozzle must exceed that of the surrounding water. Assume that the value of surface tension between air and water as 72.7 x 10° N/m. A soap bubble 50 mm in diameter contains a pressure (in excess of atmospheric) of 2 bar. Find the surface tension in the soap film. Water has a surface tension of 0.4 N/m. In a 3 mm diameter vertical tube if the liquid rises 6 mm above the liquid outside the tube, calculate the contact angle.
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