It's all about the size of an object, heat is a form of energy and the larger an object the more energy it can store, a teapot is considerably larger then a teacup, so the teapot holds more heat energy and therefore cools down slower then the teacup which holds less energy as it is smaller
Or it could be because the boiling water in a teapot is completely surrounded by material so it has no where to lose it's heat except through the spout, a teacup has no lid so the heat can escape into the air around it
Coffee is made and then sits on a burner on the coffee pot that is about 165 degrees. Tea is made with boiling water at 212 degrees and poured into a cup. Tea takes longer to cool because it starts out hotter.
The cup is smaller than the teapot so the teapot has less surface area compared to its volume than the teacup.
As a simplified example - imagine the cup and the teapot are the same shape but different sizes - let's say spheres; the teapot being an 8 inch diameter sphere and the cup a 4 inch diameter sphere. That means the cup has a surface are of 4/3·π·(2 in)² = π·16/3 in² and a volume of 8π cubic inches, The pot would have a surface area of 4/3·π·(4 in)² = π·64/3 in² and a volume of 64π cubic inches.
The surface area of the pot is 4 times that of the cup, but it has 8 times the volume - and consequently the contents have 8 times the mass. Since the heat transfer is proportional to the surface area, even though the pot has more surface area it has proportionally more contents to remove the heat from so even at 4 times the rate of heat loss, it will still only drop in temperature half as fast as the cup (4/8 = 1/2). The math is hardly exact, but the point is that volume increases faster than surface area as objects increase in size.
On top of that, the contents of the teapot are pretty much contained within it while the contents of the teacup are free to evaporate into the surrounding air - further accelerating the heat loss from the cup.
it is because heat enters fast and gets out fast
Since the hot tea is already hot, it will get hotter faster. The cold tea will take longer to brew because it has less heat.
It is smaller, and has less mass.More specifically, the surface-to-volume (and therefore surface-to-mass) ratio is generally larger in the case of smaller objects.
Cup OF Tea
yesbecause mint is kind of herb that is spicy and has chemicals inside that make the water cool down
cool
There movement slows down.
cool down the surface the water is condensing on.
Aluminium is extracted using electrolysis only! Electrolysis is the process where ionic substances are broken down into simpler substances using electricity
shiny because its cool when after boiled also the black wouldnt cool as it attracts heat.
* Aluminum is naturally corrosion resistant * Aluminum tubing help cool down computers
Its found at the bottom of the kettle because its uses convection currents to heat it up. The heating element warms up the water at the bottom, and because when water is hot its less dense, so it will rise to the surface, cool, and sink down again to be warmed up. Its a repetitive cycle that will eventually not give the water time to cool down far enough to sink, which is how you get it to boil. Like a stove and a hot air balloon.
It's just contraction. The metal continues to cool and makes cracking sounds. Can happen long after use, especially if there is still water in the kettle.Kettles use a thermo bi-metal switch to shut the kettle off once it has boiled. This switch will not reset while the kettle is hot. Once the kettle has cooled down to a reasonabletemperature the switch will reset itself and be ready to for the next heating cycle. The click you are hearing is the switch resetting itself.
Not at room temperature, however you can make it into an electro-magnet by passing a current through it. If you cool Aluminium down to 1.2 Kelvins then it becomes a superconductor and will behave as if it's magnetic.
The aluminium smelter in New Zealand is at Tiwai Point, Southland.
Yes. While the mass will not change, the volume will decrease as the aluminium cools. Consequently the density will increase.
They sweat and when they sweat they cool down because when the sweat evaporates you cool down.
sweat is a mechanism to cool the body down. the body creates sweat, so it can cool itself down.
Boron is a metalloid, while aluminium is a metal. The size of the aluminium atom is much greater than boron, so electropositivity increases from boron to aluminium. But then electropositivity decreases from aluminium to thallium due to the poor shielding effect of the d10 orbital.
<><><> I'm trying to find out the time it takes for a clothes iron to cool down after it was turned off, finished using it, to store it. <><><> If you want some general advice, maybe it is this: "Unplug it from the wall outlet and leave it for a full 24 hours before you put it away." Come on now, this question is like asking how long it takes a kettle or a saucepan to cool down from boiling water... There is no general answer. The time it takes to cool down enough to be put away depends entirely on 2 things: 1) the weight of the iron and 2) the temperature it is cooling down from. When it gets cool enough to be able to touch it safely without risking a burn to your finger, then if you leave it for one more hour it will be safe to put away. <><><>
it means either calm down or relax or if your sweating like cool down