A mercury barometer reads 721.0 mm on the roof of a building and 736 mm on the ground.?

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A mercury barometer reads 721.0 mm on the roof of a building and 736 mm on the ground.?

Assuming a constant value of 1.29 kg/m3 for the density of air, determine the height of the building.

2007-04-04 04:02:59 · 1 answers · asked by Fuzz 1 in Science & Mathematics ➔ Physics

1 answers

Difference of pressure P=hg *specific mass

care to units specific mass air 1.29 kg/m^3

h = P/g*1.29
P= 736-721= 15mmHg = 15*133= 2000Pa
h = 2000/1.29*9.81= 158m

2007-04-04 04:16:04 · answer #1 · answered by maussy 7 · 0⤊ 0⤋