Ten questions. The result tells you which lessons you may skip.
A soap film (\(T = 0.03\,\text{N/m}\)) on a U-frame holds a slider \(10\,\text{cm}\) long. The pull of the film on the slider is
What does soap do to the surface tension of water?
The work needed to blow a soap bubble (\(T = 0.03\,\text{N/m}\)) of radius \(5\,\text{cm}\) from nothing is
A thousand water droplets of radius \(0.1\,\text{mm}\) merge into one drop. The radius of the new drop is
The excess pressure inside a water drop (\(T = 0.07\,\text{N/m}\)) of radius \(1\,\text{mm}\) is
The excess pressure inside a soap bubble (\(T = 0.03\,\text{N/m}\)) of radius \(1\,\text{cm}\) is
Two soap bubbles of radii \(2\,\text{cm}\) and \(4\,\text{cm}\) are in contact. Their common wall
Water rises \(14\,\text{cm}\) in a glass capillary of radius \(0.1\,\text{mm}\). In a capillary of radius \(0.2\,\text{mm}\) it rises
A glass capillary dips into mercury, whose angle of contact with glass is about \(135^\circ\). The mercury in the tube
Water rises \(14\,\text{cm}\) in a tube of diameter \(0.2\,\text{mm}\). Between two glass plates \(0.2\,\text{mm}\) apart it rises