Rajnish Kaushik Posted January 7, 2014 Share Posted January 7, 2014 i have tried putting a cube of ice in water and one in air and found that ice melts faster and the same with the dry ice so i am confused about it can someone help me? Link to comment Share on other sites More sharing options...
Moontanman Posted January 7, 2014 Share Posted January 7, 2014 (edited) i have tried putting a cube of ice in water and one in air and found that ice melts faster and the same with the dry ice so i am confused about it can someone help me? Stick your hand in room temp water, how does it feel compared to the air in the room? Edited January 7, 2014 by Moontanman Link to comment Share on other sites More sharing options...
Rajnish Kaushik Posted January 7, 2014 Author Share Posted January 7, 2014 water is colder then the air but how does that gives me the answer ? Link to comment Share on other sites More sharing options...
Moontanman Posted January 7, 2014 Share Posted January 7, 2014 water is colder then the air but how does that gives me the answer ? Give it some thought, why does the water feel colder? Link to comment Share on other sites More sharing options...
Rajnish Kaushik Posted January 7, 2014 Author Share Posted January 7, 2014 Give it some thought, why does the water feel colder? because it is at lower temp then air Link to comment Share on other sites More sharing options...
Moontanman Posted January 7, 2014 Share Posted January 7, 2014 because it is at lower temp then air No, both should have been the same temp... Link to comment Share on other sites More sharing options...
Endy0816 Posted January 7, 2014 Share Posted January 7, 2014 Think in terms of heat transfer. Water vs Air Link to comment Share on other sites More sharing options...
Rajnish Kaushik Posted January 7, 2014 Author Share Posted January 7, 2014 No, both should have been the same temp... bro that was fridge water Link to comment Share on other sites More sharing options...
Moontanman Posted January 7, 2014 Share Posted January 7, 2014 Think about why water cooling is better to keep an engine at a specific temp than air cooling... Link to comment Share on other sites More sharing options...
Rajnish Kaushik Posted January 7, 2014 Author Share Posted January 7, 2014 Think about why water cooling is better to keep an engine at a specific temp than air cooling... bro but my question was about the ice and dry ice Link to comment Share on other sites More sharing options...
Moontanman Posted January 7, 2014 Share Posted January 7, 2014 bro but my question was about the ice and dry ice The principle is the same... Link to comment Share on other sites More sharing options...
Rajnish Kaushik Posted January 7, 2014 Author Share Posted January 7, 2014 The principle is the same... but how?? i m unable to understand Link to comment Share on other sites More sharing options...
hypervalent_iodine Posted January 7, 2014 Share Posted January 7, 2014 bro but my question was about the ice and dry ice ! Moderator Note Could you please stop calling people bro? It's not really against the rules, but damn is it annoying. Link to comment Share on other sites More sharing options...
Rajnish Kaushik Posted January 7, 2014 Author Share Posted January 7, 2014 ! Moderator Note Could you please stop calling people bro? It's not really against the rules, but damn is it annoying. but they didnt have any problem and if they then they can say me directly Link to comment Share on other sites More sharing options...
Moontanman Posted January 7, 2014 Share Posted January 7, 2014 It's an out dated American idiom, he trying to curry favor, Link to comment Share on other sites More sharing options...
Rajnish Kaushik Posted January 7, 2014 Author Share Posted January 7, 2014 It's an out dated American idiom, he trying to curry favor, lol Link to comment Share on other sites More sharing options...
Elite Engineer Posted January 7, 2014 Share Posted January 7, 2014 There is a better transfer of energy from the warm water to the cold ice cube than there is from the warm air to the cold ice cube. Link to comment Share on other sites More sharing options...
Moontanman Posted January 7, 2014 Share Posted January 7, 2014 There is a better transfer of energy from the warm water to the cold ice cube than there is from the warm air to the cold ice cube. Don't do it for him... Link to comment Share on other sites More sharing options...
Rajnish Kaushik Posted January 7, 2014 Author Share Posted January 7, 2014 There is a better transfer of energy from the warm water to the cold ice cube than there is from the warm air to the cold ice cube. what if water is coller but still ice melt faster Link to comment Share on other sites More sharing options...
John Cuthber Posted January 7, 2014 Share Posted January 7, 2014 Water feels colder than air. Why? How warm is your hand? How warm is an ice cube? (and, for the record, please don't call me bro). Link to comment Share on other sites More sharing options...
Elite Engineer Posted January 7, 2014 Share Posted January 7, 2014 Don't do it for him... haha, sorry I was getting frustrated. I think Rajnish may be a troll Link to comment Share on other sites More sharing options...
Sensei Posted January 7, 2014 Share Posted January 7, 2014 (edited) i have tried putting a cube of ice in water and one in air and found that ice melts faster and the same with the dry ice so i am confused about it can someone help me? 1 cm^3 of air has ~2.68*10^19 molecules at 0 C, s.p. 1 cm^3 of water has ~3.345*10^22 molecules of H2O. Collisions between cold object molecules and water molecules are more probable than collisions with rare oxygen & nitrogen molecules. In thermic cups and thermoses there is even used layer of vacuum, to separate hot/cold content from environment. Edited January 7, 2014 by Sensei Link to comment Share on other sites More sharing options...
Lightmeow Posted January 7, 2014 Share Posted January 7, 2014 Think of it this way. When you melt an ice cube, what is happining. Do you think water might have any properties that make it easyier for the ice to melt in it then in air. Link to comment Share on other sites More sharing options...
swansont Posted January 7, 2014 Share Posted January 7, 2014 The relevant parameters are the heat capacity, the mass and the temperature. Q = mC [math]\Delta T[/math] m is the mass, C is the specific heat The water may have a smaller temperature difference, but there's a lot more of it, and water has the ability to absorb more heat per unit mass for a given temperature increase. For the record, I also find it annoying being referred to as Bromine Oxide. 1 Link to comment Share on other sites More sharing options...
Rajnish Kaushik Posted January 7, 2014 Author Share Posted January 7, 2014 haha, sorry I was getting frustrated. I think Rajnish may be a troll bro what problem u have with me ? Link to comment Share on other sites More sharing options...
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