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The law that introduces "Joules equivalent'' or the mechanical equivalent of heat" is known as
- a)Joules law
- b)Pascal's law
- c)First law of thermodynamics
- d)Charle's law
Correct answer is option 'C'. Can you explain this answer?
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The law that introduces "Joules equivalent'' or the mechanical equiva...
There is a simple relation between mechanical work done on a system and heat generated in it. The constant is popularly known as Mechanical Equivalent of Heat. After the name of James Prescott Joule, the constant is also often known as Joule's Mechanical Equivalent of Heat or simply Joule's Constant.
The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic processes, distinguishing two kinds of transfer of energy, as heat and as thermodynamic work, and relating them to a function of a body's state, called Internal energy.
The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another but can be neither created nor destroyed.
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The law that introduces "Joules equivalent'' or the mechanical equiva...
First Law of Thermodynamics and Joule's Equivalent
The First Law of Thermodynamics states that energy cannot be created or destroyed, but can only be converted from one form to another. In other words, the total amount of energy in a closed system remains constant. This law is also known as the law of conservation of energy.
Joule's Equivalent, also known as the mechanical equivalent of heat, is a concept that relates mechanical work to heat. This law was introduced by James Prescott Joule in 1847. The law states that the amount of work done by a system is directly proportional to the amount of heat produced.
Joule's experiments involved the use of a paddle-wheel in a container of water. The paddle-wheel was used to stir the water, and the amount of work done was measured by the amount of weight lifted by the paddle-wheel. Joule found that the amount of work done was proportional to the amount of heat produced, and he determined the mechanical equivalent of heat to be 4.184 joules/calorie.
Importance of Joule's Equivalent
Joule's Equivalent is important because it provides a way to convert between mechanical work and heat. This concept is used in many areas of science and engineering, including thermodynamics, heat transfer, and energy conversion.
For example, in a steam turbine, the mechanical energy of the steam is converted into electrical energy. The efficiency of the turbine is determined by the amount of mechanical work that is converted into heat, and Joule's Equivalent is used to calculate this efficiency.
Conclusion
In conclusion, the law that introduces Joule's Equivalent, or the mechanical equivalent of heat, is the First Law of Thermodynamics. This law states that energy cannot be created or destroyed, but can only be converted from one form to another. Joule's Equivalent is important because it provides a way to convert between mechanical work and heat, and is used in many areas of science and engineering.
The First Law of Thermodynamics states that energy cannot be created or destroyed, but can only be converted from one form to another. In other words, the total amount of energy in a closed system remains constant. This law is also known as the law of conservation of energy.
Joule's Equivalent, also known as the mechanical equivalent of heat, is a concept that relates mechanical work to heat. This law was introduced by James Prescott Joule in 1847. The law states that the amount of work done by a system is directly proportional to the amount of heat produced.
Joule's experiments involved the use of a paddle-wheel in a container of water. The paddle-wheel was used to stir the water, and the amount of work done was measured by the amount of weight lifted by the paddle-wheel. Joule found that the amount of work done was proportional to the amount of heat produced, and he determined the mechanical equivalent of heat to be 4.184 joules/calorie.
Importance of Joule's Equivalent
Joule's Equivalent is important because it provides a way to convert between mechanical work and heat. This concept is used in many areas of science and engineering, including thermodynamics, heat transfer, and energy conversion.
For example, in a steam turbine, the mechanical energy of the steam is converted into electrical energy. The efficiency of the turbine is determined by the amount of mechanical work that is converted into heat, and Joule's Equivalent is used to calculate this efficiency.
Conclusion
In conclusion, the law that introduces Joule's Equivalent, or the mechanical equivalent of heat, is the First Law of Thermodynamics. This law states that energy cannot be created or destroyed, but can only be converted from one form to another. Joule's Equivalent is important because it provides a way to convert between mechanical work and heat, and is used in many areas of science and engineering.
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The law that introduces "Joules equivalent'' or the mechanical equivalent of heat" is known asa)Joules lawb)Pascal's lawc)First law of thermodynamicsd)Charle's lawCorrect answer is option 'C'. Can you explain this answer?
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