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Firstly, you have to know what temperature actually is. It's a measure of the amount of energy contained in a substance that contributes to its' movement. Atoms in a solid vibrate, and in a liquid or gas, they move around until they hit something - either way, they have a kinetic energy, and temperature is a way of detecting it. (And I have no idea how sensing heat or cold works - nerves are strange and magical constructs).
From this, it's fairly simple to imagine what is happening when warm and cold water mix. The cold water molecules are moving slowly, while the warm ones are moving quite rapidly. Over time, the warm molecules collide with the small ones, and their speed averages out. Warm molecules lose energy in the collision and slow down, cold molecules gain energy in the collision and speed up. The net result is water that is cooler than the warm water, but warmer than the cool water.
Neglecting other energy exchanges (between mixed water and air or container around it, or gains or losses due to chemical reactions), the final temperature of the mixed water will be (T_h*W_h+T_c*W_c)/W. T is temperature in degrees, W is weight or weight fraction of the water involved, and the _h and _c tags refer to hot and cold water respectively. The W without a suffix is the total weight or weight fraction of the water - the sum of W_h and W_c. This holds true for any other pure liquid or gas. Any mixtures of different substances will not behave this way because they have different amounts of energy needed to change the temperature.
Source: first year engineering physics class - thermodynamics unit, at UBC.
What else can I help you with?
What is the difference between warm water and cold water?
temperature
What temperature is the water?
Water temperature tells you how cold or hot the water is. If the water is hot, the heat indicates the kinetic energy of the water.
What happens if you put water on snow?
Yes. Water vapor in the air can condense (like the water that forms on your cold glass of soda) and fall. If the temperature is warm, the water falls as rain. If the temperature is cold enough, the water freezes and falls as hail or snow.
Is it cold or warm if the temperature is 25 celsius?
It would be warm.
Is wool warm when wet?
If it is cold water, than it is cold. if it is warm water, it is normal
Warm and cold water?
Warm water is little bit hotter than cold water. The temperature of warm water is higher than that of cold water
How does cold effect warm blooded animals temperature?
Cold blooded animals do not control their internal body temperature. Warm blooded animals do.
Does the temperature of water effect the speed it freezes?
Yes. It is a proven fact by scientist that hot water will freeze faster than cold or warm. This process is called " The Mpemba Effect ".
What is the difference between warm water and cold water?
temperature
If a unit of warm water is mixed with a unit of cold water what will the temperature be?
Tepid
Is water cold or warm when it is 95f?
Water at 95°F is considered warm. This temperature falls within the range of lukewarm to warm water.
Is the ocean water warm or cold?
the ocean has differentiated temperature at different regions and even depths.It is both warm & cold.
How long will it take for warm water to freeze?
The time it takes for warm water to freeze depends on factors such as the initial temperature of the water, the volume of water, and the surrounding temperature. Generally, warm water will freeze faster than cold water due to the Mpemba effect, but it still typically takes a few hours to freeze completely in a standard freezer.
What happens when cold water meets warm water?
it becomes a mixture of a warm and cold water :)))
What effects do currents have?
Deep ocean currents have enormous effect on climatic conditions. Deep ocean currents are also known as conveyor belt for temperature. There are two types of water currents, cold and warm. The warm water currents are less dense than cold water currents.
Will a tomato rot faster in warm water or cold water?
The tomato would rot faster in warm water because, when you put a tomato in cold temperature ex: refrigerator the tomato does not rot and it stays good for a long period of time, now if you put the tomato in warm temperature or room temperature for instance, the tomato has more chance of rotting than in cold temperature so the tomato rots faster in warm water.
How is an ocean current considered to be warm or cold?
Warm or cold defines the temperature of the water. In general warm currents flow north and cold currents flow south. That makes sense. Also warm currents flow on the surface and cold currents flow deep since cold water is denser than warm water.
