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/sci/ - Science & Math

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5028970 No.5028970[DELETED]  [Reply] [Original]

Hello /sci/, this is a homework question but I'm stumped. I'm not really sure how to proceed

Q) How much does a vertical column of the atmosphere (at STP) with a cross sectional area of 0.012 m^2 weigh in N?

pic unrelated

>> No.5028977

do I just multiply 101325 Pascals * .012 and multiply that by acceleration due to gravity?

>> No.5028984

I'm trying to use P=pgh, I have P, p, g but no h. What the ef is h?

>> No.5028999
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5028999

>>5028984
h = P/pg

>> No.5029001

>>5028999
even with H though, how do I find the weight?

>> No.5029005
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5029005

>>5029001
>height
>area
>density
>how to find mass
>how to find weight

>> No.5029013

>>5029005
wait wait wait, A * H= V

V*D=Weight?

good god.

>> No.5029016
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5029016

>>5029013
>volume times density is weight

>> No.5029017

>>5028977
Not quite.

1 Pascal = 1 Newton / m^2

just multiply 101325 Pascals * .012 m^2. Done.

>> No.5029027

Let p be the standard pressure in Pascals, a be the area of the plate in square meters, and F be the force on the plate.

Then, F = pa. F is the weight.

>> No.5029029

Thanks guys. It's late, I'm done. Good night.
And if it makes you feel better, im a geology major

>> No.5029031

So, uh... Where on the planet, at what altitude and at what ambient barometric pressure are we measuring this weight?