Question

Which object will cool faster when kept in open air, the one at 300 degree C or the one of 100 degree C ? Why?

#Starquestioner-Brainly.

Answer 1

Hi

Here is your answer,

The object at 300°C will cool faster then the object at 100°C .This is in accordance with Newton's Law of cooling.

As we know, rate cooling of an object α temperature between the object and it's surrounding.



Hope it helps you !

Answer 2

★ THERMODYNAMICS ★

According to the given system of objects -

In a open surrounding , two objects are kept , one at 100°C and another at 300°C

The object with higher thermal differences as respect to the surrounding system will cool faster , i.e. , object with 300°C will cool faster ,

Aslike , reason behind this phenomenon -

★ NEWTONS LAW OF COOLING ★
[ The general statement ]

The rate of change of the temperature of any object is directly proportional to the difference between it's own temperature and the temperature of respected surrounding

Aslike , it defines as , the more the difference we obtain in thermal stability in any objects systems , the faster it'll lead to be cooled ,
When any object is thermally higher degrees , it's respective difference in temperature with surrounding is also so high ,

Ex - normal temperature : 25°C
Higher thermal state body : 300°C

Explanation with theoretical and practical issues -

Theoretically , when any object is at higher thermal disassociation levels , the surrounding tends to make it more and more stabilized , this happens because , Everything in universe tends to be at stable state , that's why the system doesn't bear any kind of thermal differences and tried it's best to make it stabilized in order ,


Practically [ practical aspects ]

Consider the normal temperature to be 25°C ,
And consider any object at 25.99999999...∞
Accordingly , the thermal differences is very low , it tends to be 26°C , just a cut above ,
Now , the consequences are -
Does the system got instability order due to the object - NO !
Does the system has any problems with the object now [ accordingly the thermal energy fluctuations ] - NO !
So , why the system will make any effort to get it in stabilized order , if it isn't having so ,
The object will nearly take infinite time to cool at given circumstances above , means , any object at 25.9999... will take infinite time to cool at normal temperature be 25°C

MATHEMATICALLY -

Let the temperature of surrounding be x°C

Body A's temperature - 100°C
Body B's temperature - 300°C

Temperature with respect to surrounding -

Body A = ( 100 - x )°C
Body B = ( 300 - x )°C

Obviously , Body B possess more thermal differences between system of objects and the surrounding , hence , it'll be cooling faster , accordingly , this is how a thermal stability occurs


One more fascinating example -

If anyhow we can raise the temperature of any star , then the respective star's temperature will get stabilized and it'll start cooling down , this also the same phenomenon above , when we provide energy to the star , star had been already burning its fuels as gaseous quantum state and plasma generacy , it needed the same order of energy fluctuations which would lead to it's stability , hence , it'll cool down

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