Physics

posted by .

The highest that George can suck water up a very long straw is 2.0 m. (This is a typical value.)
What is the lowest pressure that he can maintain in his mouth?

• Physics -

The weight of the water must equal the difference in pressure.

atmospheric pressure-his pressure=weight 2M water.

101.3kPa*area-hispressure*area=area*2m*densitywater*g
101.3kpa-hispressure=
2m*10^3kg/m^3*9.8N/kg
his pressure=101.3kpa-18.6kPa
check my figuring.

• Physics -

you's the best

• Physics -

Sorry, I meant you are the BEST

• Physics -

There is an error. 2*9.8=19.6, not 18.6
change that.

• Physics -

oh i figured that...thanks again

• Physics -

82kPa

Similar Questions

1. Physics

To suck water up a straw to a maximum height of 187 mm, what minimum gauge pressure must be produced in the lungs?
2. Physics

To suck water up a straw to a maximum height of 98 mm, what minimum gauge pressure must be produced in the lungs?
3. Physics

To suck water up a straw to a maximum height of 68 mm, what minimum gauge pressure must be produced in the lungs?
4. chemistry

Suppose you are given a list of solutions (all with nonvolatile solutes) and their concentrations. You pick out the one with the lowest freezing point. It should also have (pick all that apply): the lowest boiling point the highest …
5. Physics

The longer a straw, the harder it is to drink from. If the air pressure is 93300 Pa, and if you could create a perfect vacuum in your mouth, what is the maximum length of a straw that you could still drink from?
6. AP Chemistry

From the following: pure water solution of C12H22O11 (m=0.01) in water solution of NaCl (m=0.01) in water solution of CaCl2 (m=0.01) in water choose the one with the a) highest freezing point b) lowest freezing point c) highest boiling …
7. physics

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?
8. physics

The highest George can suck water up a very long straw is 2.0m What is the lowest pressure he can maintain in his mouth?
9. Physics

Suppose you have a very long straw that can reach from a cup of water on the ground level to the top of a very tall building. When you use a pump to suck on the straw in order to bring water up, a. you can bring the water up to any …
10. Physics

Suppose you have a very long straw that can reach from a cup of water on the ground level to the top of a very tall building. When you use a pump to suck on the straw in order to bring water up, a. you can bring the water up to any …

More Similar Questions