Question

A capillary tube with an inside diameter of 𝟓𝟒𝟎 𝝁𝒎 can support a 𝟏𝟎𝟎 𝒎𝒎 column of liquid that has a density of 𝟏𝟑𝟓𝟎𝟎 𝒌𝒈𝒎−𝟑. If 𝒉 = 𝟎.𝟏 then is it possible to find the surface tension of the liquid? If not, then write down the reason.

Answer 1

$$\sigma=0.25\rho ghr^2\\ \sigma=0.25(13500)(9.8)(0.1)(0.54\cdot0.001)^2\\=0.00096\frac{N}{m}$$