Q 10.19 What is the pressure inside the drop of mercury of radius 3.00 mm at room temperature? Surface tension of mercury at that temperature (20 °C) is 4.65 × 10-1 N m-1. The atmospheric pressure is 1.01 × 105 Pa. Also give the excess pressure inside the drop.
Surface Tension of Mercury is
The radius of the drop of Mercury is r = 3.00 mm
Excess pressure inside the Mercury drop is given by
Atmospheric Pressure is
Total Pressure inside the Mercury drop is given by