Lockjaw Posted June 20, 2010 Share Posted June 20, 2010 1 ltr = 1 kg. Not always... Link to comment Share on other sites More sharing options...
JFKvsNixon Posted June 20, 2010 Share Posted June 20, 2010 Not always... I guess that temperature would have an effect, but does the height the water is from sea level have any effect? Link to comment Share on other sites More sharing options...
Guest sibon Posted June 20, 2010 Share Posted June 20, 2010 You're starting to sound like a physicist... ETA. Congrats. on the status upgrade. How much time have you spent trying to think of a witty tag line thingy? I'm working on it. Witty doesn't come too easily to me. I was thinking of "I am not, nor have I ever been a Physicist" But that is too long. Link to comment Share on other sites More sharing options...
Lockjaw Posted June 20, 2010 Share Posted June 20, 2010 "I am not, nor have I ever been a Physicist" Don't give up. There's still time.... Link to comment Share on other sites More sharing options...
Guest sibon Posted June 20, 2010 Share Posted June 20, 2010 I guess that temperature would have an effect, but does the height the water is from sea level have any effect? Yes. If you take it far enough above sea level, it wont weigh anything at all:) I doubt that the effect would be noticeable on the Earth's surface though. Link to comment Share on other sites More sharing options...
Grandad.Malky Posted June 20, 2010 Share Posted June 20, 2010 I've also learned somthing new today as apparently 4°C (40°F) is the magic temperature for water. http://chemistry.about.com/od/chemistryfaqs/f/icefloats.htm Well that’s two things I have learned today could we go for a hatrick, when doesn’t 1ltr of water weigh 1Kg? Link to comment Share on other sites More sharing options...
Strix Posted June 20, 2010 Author Share Posted June 20, 2010 Yes. If you take it far enough above sea level, it wont weigh anything at all:) I doubt that the effect would be noticeable on the Earth's surface though. it is noticeable - it's snow Link to comment Share on other sites More sharing options...
Strix Posted June 20, 2010 Author Share Posted June 20, 2010 Well that’s two things I have learned today could we go for a hatrick, when doesn’t 1ltr of water weigh 1Kg? when it's not at atmospheric pressure Link to comment Share on other sites More sharing options...
Lockjaw Posted June 20, 2010 Share Posted June 20, 2010 when it's not at atmospheric pressure Assuming that, by "atmospheric pressure" you meant a pressure of 1 atmosphere / 760 mmHg / 101.325 kPa then, no. 1 litre could have a mass of 1 kg at different pressures, depending on the temperature. Two variables. Fun time! Link to comment Share on other sites More sharing options...
Rupert_Baehr Posted June 20, 2010 Share Posted June 20, 2010 Weight = Mass x Gravity. Gravity is less at the Equator than at the poles. Gravity is less the further you move away from the centre of the earth - the gravity at the top of mount Everest is less than that at sea level. A litre of water would weigh less than 1Kg at the North Pole, at the South Pole and at the top of Mount Everest. (At the top of mount Everest, a litre of fresh water would weigh about 999.972g) Then again, you probably wouldn't find a litre of fresh water in any of those places. Plenty of ice, though. Link to comment Share on other sites More sharing options...
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