Calculate the approximate depression of mercury at 20°C in a capillary tube of radius 1.5 mm. Surface tension (σ) for mercury is 0.514 N/m at 20°, and its specific weight is 133.1 kN/m^{3}.
Calculate the approximate depression of mercury at 20°C in a capillary tube of radius 1.5 mm. Surface tension (σ) for mercury is 0.514 N/m at 20°, and its specific weight is 133.1 kN/m^{3}.