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If the atmospheric pressure is 100,000 Pa, calculate the length of the tube of the barometer that uses water?

(Density of water= 1000 kg/m^3)

 Jan 7, 2017

Best Answer 

 #3
avatar+17331 
+5

The answer in red is the water answer, silly!   10.19 m

 Jan 7, 2017
 #1
avatar+17331 
+5

A pascal is a  N/m^2   or kg/  m/sec^2

 

100, 000 kg /  (m/sec^2)  = x m x 9.81 m/sec^2 x 1000 kg/m^3

x =10.19 m    Which is a long tube to deal with  so : Often MERCURY is used instead (it is 13.56 times denser than water)

 

10.19 m / 13.56 = .751 m = 751 mm      so a tube of less than 1 meter could be used if you use mercury instead of H2o

 Jan 7, 2017
 #2
avatar+502 
0

but the answer has to be with water not mercury

Rauhan  Jan 7, 2017
 #3
avatar+17331 
+5
Best Answer

The answer in red is the water answer, silly!   10.19 m

ElectricPavlov Jan 7, 2017

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