61. The alcohol is lowered to a negligible depth of tube radius of the inner channel which r = 2 mm. To determine the mass of alcohol entered into the phone. As far as the pressure at points lying at half the height of the column of alcohol, less than atmospheric? The surface tension of alcohol σ = 22 ∙ 10-3N / m.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)