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Is it a violation of second law of thermodynamics to convert heat completely into work?
Wiki User
∙ 10y ago
The fluctuation theorem of statistical physics oversees this possibility, but the net result is the expected one. Some experiments with particles show local decrease in entropy. But, again, the net result is the expected one. To build a macro system which violates the law, it's just a matter of building a wall separating two regions of an isolated box filled with a gas. This wall should possess a special property: It allows the gas to pass in a single direction only. Such a system has an overnight capacity of realizing work internally. If external high entropy heat is allowed to enter the system, then work can be executed outside the system. The system "cleans" the input energy. Whoever builds this wall is eligible for a Nobel Prize.
Wiki User
∙ 15y ago
Wiki User
∙ 10y agoYes - the second law states that heat cannot be completely converted into useful work.
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Which law of thermodynamics states that the heat engine cannot be completely efficient?
True
Why heat cannot be converted into work and why work can be converted into heat?
A lower order energy cannot be completely coverted into a higher order energy. Heat energy is a lower order energy and work is higher order energy. Therefore it is not possible to convert heat into work without loosing some energy according to the second law of thermodynamics. But a higher order energy can be coverted completely into lower order energy and it will not violate the second law of thermodynamics.
Why the first and second law of thermodynamics may be states you can not get ahead and you can not break even?
According to the second law of Thermodynamics, the amount of usable energy will continuously decrease.According to the second law of Thermodynamics, the amount of usable energy will continuously decrease.According to the second law of Thermodynamics, the amount of usable energy will continuously decrease.According to the second law of Thermodynamics, the amount of usable energy will continuously decrease.
Can energy be produced?
You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.
Why is imposible to create perpetual motion machine?
From the second law of thermodynamics, "It is impossible to convert heat completely into work in a cyclic process." Thus, energy in a system is gradually lost. Because of this, the energy will eventually run out (though it may take a very long time), and perpetual motion is impossible.
Which law of thermodynamics states that the heat engine cannot be completely efficient?
True
Why heat cannot be converted into work and why work can be converted into heat?
A lower order energy cannot be completely coverted into a higher order energy. Heat energy is a lower order energy and work is higher order energy. Therefore it is not possible to convert heat into work without loosing some energy according to the second law of thermodynamics. But a higher order energy can be coverted completely into lower order energy and it will not violate the second law of thermodynamics.
When a student cleans their dorm room the entropy of the system must decrease How is this NOT a violation of the second law of thermodynamics?
If you include the student in the system, the entropy will increase, not decrease.
Why the first and second law of thermodynamics may be states you can not get ahead and you can not break even?
According to the second law of Thermodynamics, the amount of usable energy will continuously decrease.According to the second law of Thermodynamics, the amount of usable energy will continuously decrease.According to the second law of Thermodynamics, the amount of usable energy will continuously decrease.According to the second law of Thermodynamics, the amount of usable energy will continuously decrease.
Can energy be produced?
You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.
Why is imposible to create perpetual motion machine?
From the second law of thermodynamics, "It is impossible to convert heat completely into work in a cyclic process." Thus, energy in a system is gradually lost. Because of this, the energy will eventually run out (though it may take a very long time), and perpetual motion is impossible.
The fact that usable energy is always lost in an energy transfer is due to what 1 Newton's first law of motion 2 the second law of thermodynamics 3 Newton's second law of motion 4 the first l?
The second law of thermodynamics.
What law of thermodynamics is unavailable for doing work?
"Unavailable for doing work" is related to the Second Law of Thermodynamics.
According to the second law of thermodynamics it is not possible to change heat completely into work with no other change taking place?
That is false. The two are not directly related.
What law of thermodynamics accounts for the other 75 units of energy?
The way that the question is worded it is impossible to be sure exactly what you are looking for, but as a reasonable guess, you are looking for what happens to energy that is not producing useful work. The second law of thermodynamics generally tells us that we can never get 100% efficiency, i.e. we can never convert all the energy we are using into useful work. Some of the energy will just go into increasing the entropy of the universe.
What do energy changes to?
You can change one type of energy to another type of energy. In general, you can freely convert between different types of energy - with some limitations due to the Second Law of Thermodynamics.
It is never possible to totally convert heat energy into useful work true or false?
That is true. To research some more, do some reading on the "Second Law of Thermodynamics".
