Homework Help: physics

Posted by Allie on Monday, August 15, 2011 at 12:40am.

suppose you were able to blow air out of your mouth at one third of an atmosphere pressure. How tall a column of water could your mouth air pressure push up a straw?

I know atm pressure is 1 atm
but I'm really confused about how to go about this problem. thanks!

physics - Allie, Monday, August 15, 2011 at 12:55am
the equation that I think I need
is P = P0 + ρgh
where P is 1 atm and P0 is 1/3 atm
but I get a height of 3.06 x10^-4 meters
which seems like a vvery small amount

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