## Pressure Measurement Problem

Blaise Pascal duplicated Torricelli's barometer using a red Bordeaux win, of density 984 kg/m^3, as the working liquid. What was the height of the wine column for normal atmospheric pressure? Would you expect the vacuum above the column to be as good as for mercury?
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 Blog Entries: 9 Recognitions: Homework Help Science Advisor The first question is trivial.Use Pascal's formula. Daniel.
 So that is P=Po+(row)(g)(h) P=1.013*10^5+(984kg/m^3)(9.8)(h).....is this correct?

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## Pressure Measurement Problem

No.It should be vacuum on top of the wine...

Daniel.
 I don't understand what you are saying.
 Blog Entries: 9 Recognitions: Homework Help Science Advisor I'm saying that the experiment should be the same as in the case of Torricelli,but the length of the tube be >14 times bigger. Daniel.

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 Quote by imnotsmart So that is P=Po+(row)(g)(h) P=1.013*10^5+(984kg/m^3)(9.8)(h).....is this correct?
What is P in this equation ?
 P is suppose to be the pressure, but im not sure what that is...I don't get this problem at all.
 Recognitions: Gold Member Science Advisor Staff Emeritus There is no other P involved. On one side of the column, you have atmospheric pressure (Po). On the other side, you have vacuum (P=0). So, the force due to the liquid column must balance the force due to the atmosphere.