Question

A glass Capillary tube of diameter 2.0mm

is dipped into pool of water How high
in the tube ?
( take contact angle betwen glass of water
as oº, surface fension of pater as 0.073 ~m²"
& density of water as
a
1000kgm ³)
3×10Nm¹ and the contact angle with the tubes as 45⁰

Answer 1

To calculate the height of the water in the capillary tube, we can use the equation h = 2πσcosθ/ρg, where h is the height of the water in the tube, σ is the surface tension of the water, θ is the contact angle between the glass and the water, ρ is the density of the water, and g is the acceleration due to gravity. Plugging in the given values, we get h = 2π(0.073)cos(45°)/(1000)(9.8), which is equal to 0.0092 meters.