some one help! i needgrahams law of diffussion?
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http://chemmovies.unl.edu/chemistry/dochem/DoChem080.html\n\nhttp://members.aol.com/profchm/graham.html\n\nhttp://www.factmonster.com/ipd/A0461464.html
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You need to do a Poisson integral. Rather than try to write things out, I refer you to eqaution (3) on the mathworld site.\n\n\nhttp://mathworld.wolfram.com/PoissonIntegral.html\n\nI hope that helps.
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I would use the ideal gas law...more specifically...the combined ideal gas law...\n\nP1*V1/T1 = P2*V2/T2
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dB diff = 20 * log10(d1/d2) \n\n10 meters
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fluids - convection is due to the movement of molecules
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Ancient. This is the "Law of Superposition. See\n \nhttp://en.wikipedia.org/wiki/Law_of_superposition
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D = M/V\n\nDensity= Mass/Volume
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would you like to supply me with some formulas? im out of grade 12 physics and i forgot most of the formulas. trust me from experience, just plug numbers into a formula and things will work\n\nF=mg = ma\nFk=μkN\na= vf^2 - vi^2 / 2d
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v = wave length * f.\n\nSo, length = v / f =   1,7m
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You might find this paper useful\nhttp://arxiv.org/abs/math-ph/0106027
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Try this:\nhttp://kr.cs.ait.ac.th/~radok/physics/f3.htm
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p1v1t1=p2v2t2\n\nSee Bernoulli's theorem and Pascals Law
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starting from the very beginning\nv ≡ ds/dt\na ≡ d²s/dt² = dv/dt\ndv = adt\nif a is constant,\n∫dv = a∫dt\nv = at + C\ncall C v0, or initial velocity:\nv = v0 + at\nv = 0 +(9.80662 m/sec^2)(2 sec)\nv = 19.61324 m/s
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velocity is frequency times the wavelength\nso if the frequency decreases the velocity also will decrease
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f = v / lambda -> lambda = v / f\n\nv = velocity\nf = frequency\nlambda = wavelenght\nv in vacuum = c = 3 x 10^8 m/s\n\nlambda = 3 x 10^8 / 6 x 10^14 = 0.5 x 10^-6 m= 500 x 10^-9 m = 500 nm
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Two things make a difference here. The average distance that an individual particle is likely to move before it bangs into another particle and the speed at which the particles are moving.\n\nBecause the space between particles is so much larger in a gas than in a liquid at the same temperature, the "free path length" is longer in a gas and the diffusing substance is typically able to move further in a given period of time.  Therefore, gases diffuse through gases much more rapidly than liquids through liquids if all else is equal.\n\nFor any given combination, the hot gas or liquid substrate will provide more rapid diffusion compared to the cold one due to particle speed.\n\nYou need to check out Graham's Law of Diffusion if you want to get mathematical about this.
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Use Kirchoff's laws.  Read page at link then follow the link "example."\n\nhttp://www.pa.msu.edu/courses/1997spring/PHY232/lectures/kirchoff/kirchoff.html\n\n--- \nadded:\nwow! pjw, that UTex link is a cool online tutorial!