Question

What is the height of water column that will balance out the atmospheric presure

Answer 1

Answer:

Standard atmospheric pressure at sea level is 101.325 kPa, standard gravity 9.80665 m/s², and water is very close to 1000 kg/m³. While it varies with weather, altitude and temperature, the above yoelds

101.325 kPa/(9.80665 m/s² × 1000 kg/m³) = 10.33 m

(if you use ocean water, density is about 1025 kg/m³)

Answer 2

since pressure is given by

hρg=atmospheric pressure

where h is height against atmospheric pressure, ρ is density and g is acceleration due to gravity

since atmospheric pressure is given as 1.013*10⁶dyncm-² or 1.013*10⁵Nm-²

h*997kg/m³*9.8=1.013*10⁵

(997kg/m³ is density of water)

h=1.013*10⁵/9.8*997

h=10.367838209

h=10.37cm