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What is thermodynamics..... And state its laws.!!
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the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy.
LAWS OF THERMODYNAMICS.....
The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system. The second law of thermodynamics states that the entropy of any isolated system always increases.
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LAWS OF THERMODYNAMICS.....
The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system. The second law of thermodynamics states that the entropy of any isolated system always increases.
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Thermodynamics is the branch of physics concerned with heat and temperature and their relation to energy and work. The behavior of these quantities is governed by the four laws of thermodynamics, irrespective of the composition or specific properties of the material or system in question.
Its laws are as follows :
The four laws of thermodynamics define fundamental physical quantities ( temperature ,
energy, and entropy ) that characterize
thermodynamic systems at thermal equilibrium.The laws describe how these quantities behave under various circumstances, and forbid certain phenomena (such as perpetual motion).
The four laws of thermodynamics are:
Zeroth law of thermodynamics: If two systems are in thermal equilibrium with a third system, they are in thermal equilibrium with each other. This law helps define the concept of temperature .
First law of thermodynamics: When energy passes, as work , as heat , or with matter, into or out from a system, the system's internal energy changes in accord with the law of
conservation of energy. Equivalently,
perpetual motion machines of the first kind (machines that produce work with no energy input) 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 (machines that spontaneously convert thermal energy into mechanical work) are impossible.
Third law of thermodynamics: The entropy of a system approaches a constant value as the temperature approaches absolute zero . With the exception of non-crystalline solids (glasses) the entropy of a system at absolute zero is typically close to zero, and is equal to the natural logarithm of the product of the quantum ground state.
Its laws are as follows :
The four laws of thermodynamics define fundamental physical quantities ( temperature ,
energy, and entropy ) that characterize
thermodynamic systems at thermal equilibrium.The laws describe how these quantities behave under various circumstances, and forbid certain phenomena (such as perpetual motion).
The four laws of thermodynamics are:
Zeroth law of thermodynamics: If two systems are in thermal equilibrium with a third system, they are in thermal equilibrium with each other. This law helps define the concept of temperature .
First law of thermodynamics: When energy passes, as work , as heat , or with matter, into or out from a system, the system's internal energy changes in accord with the law of
conservation of energy. Equivalently,
perpetual motion machines of the first kind (machines that produce work with no energy input) 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 (machines that spontaneously convert thermal energy into mechanical work) are impossible.
Third law of thermodynamics: The entropy of a system approaches a constant value as the temperature approaches absolute zero . With the exception of non-crystalline solids (glasses) the entropy of a system at absolute zero is typically close to zero, and is equal to the natural logarithm of the product of the quantum ground state.
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