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May/June 2013 physics p31...Doneee...Hurrayyyy...!!!

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For the Pressure in atmospheric pressure. What was the second question, which I assume calculate the pressure? If so, how did you guys get it?
 
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Guys, someone please answer to my question about the atmospheric pressure one XP. I honestly can't wait to know the answer. I meant the second part of the question where they mentioned the atmospheric pressure. What was the question exactly and what was its answer. (This is about Paper 31)
 
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Also, I don't remember the question exactly. But, I add the atmospheric pressure + pressure I got in (a) of the question.
 
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Guys, someone please answer to my question about the atmospheric pressure one XP. I honestly can't wait to know the answer. I meant the second part of the question where they mentioned the atmospheric pressure. What was the question exactly and what was its answer. (This is about Paper 31)
The density was 13600 so the pressure is 34000 pa and the second part 34000 + 102000=136000pa
 
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The density was 13600 so the pressure is 34000 pa and the second part 34000 + 102000=136000pa

Yes , i think that's exactly what i did, you have to add atmospheric pressure and the pressure you got not subtract them.
 
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yea dude... any, comments about the time used in the echo question?
i used the equation s=2d/t , where t was the difference of the given times , the answer is 314 or 312 something like that i can't remember
 
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What was the question exactly? I want to know what was the question exactly and what did they want. Does anyone remember the question exactly?
 
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