- #1
Gabriele Pinna
- 14
- 1
Let's say that I have a spoon and a cup of coofee, I stir it with the spoon does its temperature decrease or increase ? (There is friction force so a bit of energy should turn into heat but it's strange).
What do you think happens? There is a classic experiment where you put energy into the liquid by stirring and measure the starting and finishing temperatures. Have you seen info about that experiment?Gabriele Pinna said:Let's say that I have a spoon and a cup of coofee, I stir it with the spoon does its temperature decrease or increase ? (There is friction force so a bit of energy should turn into heat but it's strange).
The answer also will depend on the initial temperatures of the cup and the surrounding air.Gabriele Pinna said:you need to consider that the spoon has a lower temperature than coofee
The process of stirring can increase the temperature of a substance by increasing the kinetic energy of its molecules. This is because stirring introduces friction, which generates heat and raises the overall temperature of the substance.
Stirring increases the rate of temperature increase by promoting more efficient heat transfer and distribution within the substance. This allows the substance to reach a higher temperature more quickly compared to if it was left unstirred.
Yes, stirring can cause a significant temperature increase depending on the intensity and duration of the stirring. In some cases, stirring can even be used as a method to control and regulate the temperature of a substance.
Yes, there are other factors that can affect temperature increase with stirring, such as the volume and type of substance being stirred, the speed and direction of stirring, and the type of utensil used for stirring.
Yes, there is a limit to how much the temperature can increase with stirring. This limit is determined by the initial temperature of the substance, the surrounding environment, and the energy input from stirring. Over-stirring may also cause the substance to cool down due to evaporation or heat loss to the surroundings.