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Not sure exactly what they say for car tires, and that may differ up here where we use PSI and degrees Celcius (we're metric so we should use kPa, but we don't). Anyway, if you fill up something and then only change the temperature, nR/V stays pretty constant... so yeah P is just proportional to T. I suppose footballs and car tires expand a little, but probably not too much with a normal (earth surface) temperature swing...
uh, but don't leave your fully inflated balls in the trunk of a hot car. I've wrecked many that way!
Oh, and fwiw, air is mostly nitrogen (78%). So maybe it would make a small difference, but unless the temperature swings are huge, so long as the ball is inflated a day or so in advance, I doubt it would make a difference that would matter.
Posts in this Thread:
- Deflated Footballs, No Snaab, Sun, 25 Jan 2015 05:05:05
- Hello, NFL, anybody home?, AeroEd, Fri, 30 Jan 2015 09:41:52
- Much ado about nothing, EGD
, Mon, 26 Jan 2015 01:56:20 - Me too, SWEDECAR
, Sun, 25 Jan 2015 13:21:28- Re: Me too, Snowmobile
, Sun, 25 Jan 2015 14:04:41
- My questions too, and why I no longer watch...., MI-Roger
, Sun, 25 Jan 2015 05:31:45- Re: My questions too, and why I no longer watch...., dtechakacheaptech, Mon, 26 Jan 2015 10:13:46
- Re: My questions too, and why I no longer watch...., AdamSAAB2kAero
, Sun, 25 Jan 2015 14:56:50 - It may all come down to the change of temperature, Ron, Sun, 25 Jan 2015 08:02:17
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