As the height of liquid rise in a capillary is equal to: h=p×g×R2×σ×cosθ , where: σ -surface tension coefficient, p is the fluid density, g -acceleration of free fall, R is the radius of the capillary.
Then: R=2×σ×cosθp×g×h=2×0.7×cos0103×10×0.062≈442.86 m.
Hence the height at mercury: h=p×g×R2×σ×cosθ= 13600×10×442.862×0.54×cos(180°−140°)≈1.37×10−8 m.
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