I challenege u! think u r a genius in physics? then answer this!?

iam not sure if its correct or not!

let the volume of gas in the space above mercury be 9x1=9cm^3

and the pressure when the mercury at 75cm is 1 atm!

when the mercury at 59cm, the volume of air in the space is 25x1=25cm^3, since the total height of the barometer is 75+9=84cm and when the mercury is 59cm than the height of air is 84-59=25cm.

using

(initial presssure)(initial volume)=(final pressure)(final volume)

then, 1x9=px25

final pressure of air, p=9/25 atm

so 9/25 atm pressure of air is needed to cause the mercury to drop to 59cm.

hope iam correct!!

14

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This is a good question but it is more of math than physics. And physics is not about finding some answer to a question.

So please don't insult physicists by challenging them with such irrelevant questions.

The truth is that I could not solve this, and that is because I have not learnt the grammar to solve this problem.

( And please try to change your idea of a genius. It is certainly not what you think it is.)

The angle of the dangle equals the heat of the seat times the square of the chair; got it?

the pressure is not what is important. it is the will of the mercury that shall decide the final outcome if this equation.

I think you should pay more attention in English class.

I GOT IT. but i dont think you no it. so you tell me yours first...=)