Newton's Law of Cooling. little question about 'Specific heat' of Mercury

  • #1

matthewgill

16
0
Newton's Law of Cooling

Time Required to Cool (or heat) an Object [Also known as Newton's Law of Cooling]

t=mCp(Ts-Tf)/Q

Where;

Q is the heat added (or being removed) from the object in watts
m is the mass (weight) of the object in Kg
Cp is the Specific heat of the object material in J/Kg C
t is the time required to cool down (or heat up) the object in seconds
Ts is the starting temperature in C
Tf is the final temperature in C

Here is what i am entering:

Q - 1700 W
m - 500 KG
Cp - ?
Ts - 1 degC
Tf - 67 degC

But what should i enter for the 'Specific heat of the object material in J/Kg C'?
The Object is Mercury.

Thank you
 
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  • #2
Cp=0.139 joules per gram per degree C.
 

1. What is Newton's Law of Cooling?

Newton's Law of Cooling is a physical law that describes the rate at which an object cools down when it is in contact with a cooler surrounding environment. It states that the rate of change of the temperature of an object is directly proportional to the difference in temperature between the object and its surroundings.

2. How is Newton's Law of Cooling used in scientific research?

Newton's Law of Cooling is used in various fields of science, such as thermodynamics, meteorology, and engineering, to study the cooling of objects and to make predictions about the temperature changes in different environments. It is also used to understand heat transfer and to design efficient cooling systems.

3. What factors affect the rate of cooling according to Newton's Law?

The rate of cooling, according to Newton's Law, is affected by several factors, including the temperature difference between the object and its surroundings, the surface area of the object, the material and density of the object, and the properties of the surrounding medium, such as air or water.

4. How can Newton's Law of Cooling be applied to specific heat of Mercury?

Specific heat is a measure of how much energy is required to raise the temperature of a substance by a certain amount. In the case of Mercury, Newton's Law of Cooling can be used to study how quickly the temperature of Mercury changes when it is in contact with different temperatures of its surroundings, and how much energy is required to raise its temperature by a certain amount.

5. Can Newton's Law of Cooling be used for objects that are heating up?

Yes, Newton's Law of Cooling can also be used to study the heating up of objects in a warmer environment. In this case, the rate of change of temperature will be directly proportional to the temperature difference between the object and its surroundings, but the temperature of the object will be increasing instead of decreasing.

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