How many laws are defined in thermodynamics?

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expert thermodaynamics,HMT ,SOM,RAC,FM

Basically classical thermodynamics have three laws in which 1st is CONSERVATION OF ENERGY ,2 ENTROPY principal which is also known as qualitative law n 3rd is 0 KELVIN temp CALLED absolute zero can not be achieved
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Computer science teacher,mathematics teacher, IT Teacher

3 laws
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Professor in computer science

4 laws
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Assistant Professor

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Four main laws. But it is generally more popularly known as the three laws of Thermodynamics. Zeroth law of thermodynamics: If two systems are in thermal equilibrium respectively with a third system, they must be in thermal equilibrium with each other. This law helps define the notion of temperature. First...
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Four main laws. But it is generally more popularly known as the three laws of Thermodynamics. Zeroth law of thermodynamics: If two systems are in thermal equilibrium respectively with a third system, they must be in thermal equilibrium with each other. This law helps define the notion of temperature. First law of thermodynamics: When energy passes, as work, as heat, or with matter, into or out from a system, its internal energy changes in accord with the law of conservation of energy. Equivalently, perpetual motion machines of the first kind are impossible. Second law of thermodynamics: In a natural thermodynamic process, the sum of the entropies of the interacting thermodynamic systems increases. Equivalently, perpetual motion machines of the second kind are impossible. Third law of thermodynamics: The entropy of a system approaches a constant value as the temperature approaches absolute zero.[2] With the exception of glasses the entropy of a system at absolute zero is typically close to zero, and is equal to the log of the multiplicity of the quantum ground state. read less
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Maths Teacher

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M.E. (Software Engg) with distinction

First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed. The Second Law of Thermodynamics states that "in all energy exchanges, if no energy enters or leaves the system, the potential energy of the state will always be less than that of the...
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First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed. The Second Law of Thermodynamics states that "in all energy exchanges, if no energy enters or leaves the system, the potential energy of the state will always be less than that of the initial state." read less
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Tutor

4 laws
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SCULPTURE

More than four laws eg. First second third zeroth law of thermodynamics
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