Question

What pressure difference does a 10 m column of atmospheric air show ?

Answer 1

The pressure difference for a column is

∆P = ρgH

So we need density of air ρ = 1.2 kg/m3

∆P = 1.2 kg/m3 × 9.81 ms-2 × 10 m = 117.7 Pa

= 0.12 kPa