- #1

Avalanche

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## Homework Statement

Please click on the link for the question.

http://i1154.photobucket.com/albums/p526/cathy446/physicsquestion_zps49e16ab1.jpg

Assume that air spreads out after coming out from the tube at 2. The speed over tube 1 is almost zero.

## Homework Equations

Knowledge problem on fluid dynamics

Continuity equation A

_{1}v

_{1}= A

_{2}v

_{2}

## The Attempt at a Solution

I know that the higher the liquid height of the tubes, the lower the air pressure. Higher flow speed also results in low pressure. So when the cross sectional area is large, the flow speed should be slow.

Using this reasoning, my answer was h2 > h4 > h3 > h1 but that answer is wrong.

Is something wrong with my logic?

Any help would be appreciated.