Barometer Basics: Check Your Homework Answers

[stuc]

Homework Statement

Homework Equations

The given ans is 9600 as attached above, but i get 15 000.

The Attempt at a Solution

 

[billy_joule]

Homework Equations

The given ans is 9600 as attached above, but i get 15 000.

The Attempt at a Solution

Show your attempt so we can see where you went wrong.

 

[stuc]

Show your attempt so we can see where you went wrong.

 

[DrClaude]

Lets approach this from a physical point of view. What should be equal in both cases, and how does that relate to the density?

 

[andrevdh]

Why do the liquid go up into the tube?

 

[Icy98]

Pressure acting on both liquids is the same

 

[andrevdh]

Can you relate the pressure to the height of the column of liquid in the tube?

 

[andrevdh]

Then construct the equation p_X = p_Y for the two liquid columns, that is the two columns are created by the same pressure.

 

[stuc]

Boyle Law>?

 

[DrClaude]

Boyle Law>?

It has nothing to do with Boyle's law. It is actually a simple problem of statics.

andrevdh almost gave you the answer in his replies.

 

[SteamKing]

How do you apply Boyle's Law to a vacuum?

 

[andrevdh]

Just try the calculation again stuc and show us your results.