Science & Mathematics - 2 August 2006

Common answers to this question are:

1. The Nitrogen difuses through the tire casing more slowly than oxygen because the N2 molecule is larger, and

2. Nitrogen pressure is more consistent than normal air pressure, because air typically contains varying amounts of moisture due to changes in the relative humidity. Water causes air to be inconsistent in its rate of expansion and contraction.

My thermal physics is a bit rusty, but I don't buy either explaination. As for reason one, N2 should be a smaller molecule than O2, 2H2O2, CO2, or other common O2 molecules found in air & therefore should difuse through the tire more rapidly.

Second, PV=NRT should apply to this problem, with N,R and V remaining virtually constant so P should vary only with T.

I'm just a tire geek who forgot most of what Leon Lederman taught him at Fermi Lab. Is there a physics geek out there who can answer this question scientifically?

Thanx

www.cartalk.com/content/columns/Archive/1997/September/05.html

2006-08-02 14:35:02 · 6 answers · asked by smleffler 1 in Physics

im wondering if there are 360 days in a year and you get paid once a month do you get 2 checks every 30 days?

2006-08-02 14:31:57 · 12 answers · asked by tttttttttttttttttttttttttttttttt 1 in Mathematics

what's it like where you are?

2006-08-02 14:30:31 · 5 answers · asked by Anonymous in Weather

2006-08-02 14:28:50 · 6 answers · asked by Christina A 2 in Astronomy & Space

Please be detailed..

2006-08-02 14:28:25 · 4 answers · asked by franciscoeleodoro 1 in Mathematics

A slorg creeps 9 ft up a wall during the daytime. After all the labor it does throughout the day, it stops to rest a while... but falls asleep!! The next morning it wakes up and sees that it has slipped down 6 ft while sleeping.
If this happens every day, how many days will the slorg take to reach the top of a wall 39 ft in height?

2006-08-02 14:14:09 · 8 answers · asked by Babygirl 1 in Mathematics

It would have to be either a square, rectangle, trapezoid, or parallelogram... but I'm thinking trapezoid. What's the right answer.

2006-08-02 14:09:38 · 6 answers · asked by ameliawht 2 in Mathematics

Please be detailed

2006-08-02 14:06:06 · 6 answers · asked by franciscoeleodoro 1 in Mathematics

2006-08-02 14:04:24 · 15 answers · asked by ? 6 in Astronomy & Space

Should I pose this question under Biology or Politics?


Nonscientific answers are welcome.

2006-08-02 13:59:06 · 4 answers · asked by spanner 6 in Biology

Seems like God and science can not exist in the same mind...

2006-08-02 13:57:40 · 12 answers · asked by Greg S 1 in Other - Science

I never figured this out. When you cook something, it's steaming a little bit. But as soon as you turn off the heat, it makes a lot more steam. Anyone ever notice that? Anyone know why?

2006-08-02 13:56:31 · 3 answers · asked by Ken J 3 in Physics

2006-08-02 13:50:05 · 9 answers · asked by chas b 1 in Mathematics

???

2006-08-02 13:48:11 · 4 answers · asked by ...blYnd... 2 in Other - Science

I know about a dll call FSFWrap, but I couldn't get it to work. The real issue is How can I use the File Writer fiter from Java. I can create a java wrapper around any COM object. So if you can get it to work in VB via COM, i can get it to work in Java...

2006-08-02 13:45:15 · 1 answers · asked by amphora001 2 in Engineering

If a regular, two sided coin is being perpetually flipped, given enough time, will it ever land on the same side one million times consecutively?

2006-08-02 13:32:13 · 11 answers · asked by The_Benster! 2 in Other - Science

http://en.wikipedia.org/wiki/Image:Blue-footed-boobies.jpg

2006-08-02 13:25:04 · 31 answers · asked by position28 4 in Zoology

science has been able to discover the different thing needed in life but can they make artficial life. is it right to experiment with life.

2006-08-02 13:21:39 · 14 answers · asked by vampbookworm 3 in Biology

I have heard that the RedYeti became extinct because the male of the species refused to breed with the female of the species. I also heard that the last known RedYeti is in captivity and that efforts to cross-breed with like genus species have been of no success since he "prefers the company of men".

2006-08-02 13:20:51 · 4 answers · asked by Anonymous in Zoology

Concentration
Molarity
weight by weight volume

2006-08-02 13:18:53 · 3 answers · asked by Anonymous in Chemistry

If yellow light can be made from a mixture of red and green lights, how does the brain interpret this as yellow? Can we percieve photons intermediate in energy between red and green, and if so, how? In other words, is there a difference between 'pure' yellow, and mixed red and green?

2006-08-02 13:13:42 · 4 answers · asked by algolthedemonstar 1 in Physics

2006-08-02 13:09:20 · 1 answers · asked by goring 6 in Physics

1. Find the directions in which the directional derivative of f(x,y)=x^2 + sin(xy) at the point (1,0) has value 1.

I tried to solve it, and I got the positive y direction for the answer. But I'm not sure if it's right or not.
Can anyone help with this problem?

2006-08-02 13:02:30 · 1 answers · asked by Anonymous in Mathematics

I'll work on an interdisciplinary project consisting in modeling the behavior of a microdrop on a given substrate. Since I have a Computer Science background, I need to acquire some background on the other side of the problem. Do you know some literature that I should read ? Or even better, have some hints about the way of modeling a microdrop's behavior ?

2006-08-02 12:55:43 · 1 answers · asked by zircO 1 in Physics

fossil fuel generate a lot of pollution matter , how about nuclear power

2006-08-02 12:52:37 · 9 answers · asked by Anonymous in Physics

1. An electrric typewriter was listed at P10,500 and was billed to the buyer at P9,135. what the discount rate?

2. Men's shoes originally priced at P1,695 a pair, are advertised at 20% off three-day sale. find the trade discount and the net price if the retailer bought 2 dozens.

2006-08-02 12:51:20 · 2 answers · asked by Anonymous in Mathematics

If light's relative time stopped then shouldn't it be everywhere at the same time, yet it take minutes for the sun's light to reach our eyes and several years for other stars like Alpha Centauri. If special relativity is true there would be no need for light years because light would travel at an infinite speed.
P.S. This is the biggest unexplained problem I have with Einstein's theory.

2006-08-02 12:46:27 · 8 answers · asked by Jorfer 2 in Physics

Do you think it will hit New Orleans or where?

2006-08-02 12:44:36 · 7 answers · asked by xSilverStarx 5 in Weather

2006-08-02 12:42:56 · 6 answers · asked by aargre 2 in Mathematics

Today I was playing with a lock and I rolled the arched part (the part that goes in the hole to lock the lock) over my finger a couple of times. A sharp piece of metal on the lock cut my nail and part of it got lodged underneath the nail. Should I be worried?

2006-08-02 12:41:04 · 35 answers · asked by Sophie S. 3 in Medicine