If u put 1hand in ice cold water, then both hands in hot water, do your hands feel diff temp from ea other?
396550
The best thing you can do is experiment yourself!!
860053
measure the cold water temp and take a large amout of cold water than hot water and mix them .\nuse the realation mhot (Thot - T2) = mcold(T2 - Tcold)\nwhere:\nmhot = amount of hot water , Thot = hot water temp\nmcold = amount of cold water , Tcold = cold water temp.\nT2 = the temp. of water after mix.\n(considering the specific heat of water constant at this range of temp.)
602506
1. Water boils- 212 degree F/100 degree C\n2. Normal Body temp- 98.6 degree F/37 degree C\n3. Water Freezing temp- 32 degree F/ 0 degree C
925921
like what do you mean,like why can you swim in cold weather? because the water is a higher temperature then outside...im learning this right now in science,but i dont listen alot...lol..sorry
1007111
Water distributes heat much faster than air can, thus, if your are warmer, it will absorb your body heat.
241754
Thermal intertia.  It works the other way too, cold water boils quicker than hot water.  The reason is when hot water is placed into the ice cube tray it immediately begins cooling.  Then when you put it into the freezer it continues to accelerate more and more quickly to the low temp desired.  Cold water would begin warming as soon as it gets put into the tray and then you have to cool it back down (opposite direction heating takes more energy)
928344
Tap water contains inpurities, so it will impact both of the temperatures... but since it is MOSTLY pure, meaning the amount of inpurities are very small, it is almost negligible.  I just mention this as you said "EXACTLY"...\n\nKeep in mind though, 0C and 100C assumes EXACTLY 1 atmosphere of air pressure, which we never have....
22699
Yes, but not a significant amount.  When you drink ice cold water, your body uses energy and burns calories to bring the water up to your normal body temperature.  Check out the source link for more detail into exactly how this works.
541181
See this answer.  Dig into the citations for the reference articles in them.  The second also has references.\n\nHot freezes faster in many cases, given certain controls such as same amount of water, same size and shape container, standard pressure etc.  There  is at least one experiment showing that water at 90 degrees C will freeze quicker than water at 18 degrees C.  This is significant since one side is quite close to boiling and the other is basically room temperature.\n\nIf you are not a high school student, I would look up linear programming ( a branch of algebra not computer science) and develop a sensitivity analysis to determine the impact of various effects.
79685
No.  There was a time when people said it did because some dude in Africa was making ice cream and claimed that his ice cream froze faster if he heated it first, but that's because ice cream needs to congeal, and heating it boiled off much of the water, making it thicker to begin with.\n\nAnd it has been shown even since the time of the Greeks that water that has been boiled prior to freezing will freeze quicker due to the fact that boiling will remove dissolved gases from the liquid, but even that assumes you are comparing water that's been boiled and brought down to temperature versus water that has not been boiled.\n\nBut if you put water that's 8 degrees and water thats 80 degrees in a freezer, the 80 degree water, prior to freezing, will need to reach 8 degrees somewhere between here and there.  All the while, the 8 degree water has made substantial progress towards freezing.\n\nIt is true that hot water loses heat more quickly due to an increased driving force for heat loss, but this is a temporary thing.  As soon as the hotter water reaching the starting temperature of the cooler water, it has no "momentum" in losing heat, but it has lost a lot of time.
662532
Hot water will drop in temperature at a faster rate, but the cold water will freeze first except under certain circumstances in a phenomenon known as the Mpemba Effect\n\nhttp://math.ucr.edu/home/baez/physics/General/hot_water.html for more details on the phenomenon
496282
No.  You would have to heat the cold water up to the temperature that the hot water is at and then go past it to get to the boiling point.  It works in reverse when freezing.  Hot water will not freeze faster than cold, because you have to remove heat just to get to the point the cold water is already at.\n\nThe cool part is you can do this experiment at home.  Put two pans on to boil, one with cold the other with hot, and see which one boils first.  You don't have to take my word for it.
419356
I will take a stab at it.  I am guessing it is because water has more degrees of freedom.  In the liquid there is also rotational degrees of freedom to absorb energy that the solid ice does not have.\n\nTo Neil, the formulas are for heat capacity and have nothing to do with the way something is heated, only the amount of energy that it takes.\n\nNor does it have anything to do with Newton's law of cooling.
360729
It doesn't.  The t(exp 4)(temperature difference to the 4th power) law works here.  The higher temperature water will cool faster than the cooler water, however, when it reaches the temperature that the cooler water was in in the first place, it will cool at the same rate the cooler water cooled with.
49104
Water is too hot, or you may have bad circulation.
669582
The body regulates our internal temperature in reference to an outside source (in this case the warm water). Your blood vessels going to your extremities are dilated, you sweat slightly more, and in some cases metabolism decreases because it produces heat. \n\nBy the way, the water does cool when it comes in contact with our body. The first thing that happens is it evaporates, because it uses the heat from our body to go from a liquid to a gas (evaporation). Then, it condenses (goes from gas to a liquid) back down to the bathtub because the air temperature is cooler than our body.
903913
The frozen one feels heavier because of the more solid (for lack of a better word) weight distribution. Did you try comparing weight by holding the bottle upright in the palm of your hand? That should give you a better relative idea. The weight is the same, in theory (assuming each bottle had exactly the same amount of water to begin with, the same amount of trapped air, and were both completely air-tight (all of which are unlikely)).