Asked by SB
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?
What is the lowest pressure that he can maintain in his mouth?
Answers
Answered by
bobpursley
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.
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.
Answered by
SB
you's the best
Answered by
SB
Sorry, I meant you are the BEST
Answered by
bobpursley
There is an error. 2*9.8=19.6, not 18.6
change that.
change that.
Answered by
SB
oh i figured that...thanks again
Answered by
the dude
82kPa
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