0
It isn't possible to change heat completely into work, with no other change taking place.
No system can convert energy from one form to another useful form with 100% efficiency.
It's not possible to transfer heat from an object at a lower temperature to another object at a higher temperature unless work is done.
APEX: Entropy of a system increases over time.
C.No system can convert energy from one form to another useful form with 100% efficiency.It's not possible to transfer heat from an object at a lower temperature to another object at a higher temperature unless work is done.It isn't possible to change heat completely into work, with no other change taking place.
==================================
δQ = T dS (closed system, perfectly reversible process - which doesn't really exisit)
δQ < T dS (closed system, real, irreversible processes)
Rudolph Clausius:
- "Heat can never pass from a colder to a warmer body without some other change, connected therewith, occurring at the same time."
- "It is impossible, by means of inanimate material agency, to derive mechanical effect from any portion of matter by cooling it below the temperature of the coldest of the surrounding objects."
- " Every process occurring in nature proceeds in the sense in which the sum of the entropies of all bodies taking part in the process is increased. In the limit, i.e. for reversible processes, the sum of the entropies remains unchanged."
- "The internal energy of a closed system is increased by an adiabatic process, throughout the duration of which, the volume of the system remains constant."
- "In every neighborhood of any state S of an adiabatically enclosed system there are states inaccessible from S"
Still curious? Ask our experts.
Chat with our AI personalities
Ross
Lao
Beau- Heat spontaneously flows from a hot object to a cold object.
- The total entropy of an isolated system can never decrease.
- It is impossible to convert heat completely into work in a cyclic process.
Formulations 1 and 2 are correct statements of the second law of thermodynamics.
No system can convert energy from one form to another useful form with 100% efficiency.
and
Entropy of a system increases over time.
Add your answer:
Earn +20 pts
In which direction does heat move?
Heat moves from areas of higher temperature to areas of lower temperature, following the principle of thermodynamics known as the second law of thermodynamics.
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 fact that usable energy is always lost in an energy transfer is due to the second law of thermodynamics. This law states that entropy, or disorder, tends to increase over time in a closed system, leading to the loss of usable energy in the form of heat.
Which law of thermodynamics states that the heat engine cannot be completely efficient?
True
Why the first and second law of thermodynamics may be states you can not get ahead and you can not break even?
The first law of thermodynamics states that energy cannot be created or destroyed, only transformed. This implies that the total energy of a closed system remains constant. The second law of thermodynamics states that entropy, a measure of disorder, tends to increase over time in a closed system. Together, these laws suggest that it is impossible to create a perpetual motion machine or achieve 100% efficiency, indicating that one cannot "get ahead" or "break even" in terms of energy conservation.
Is entropy closely related to the 1st law of thermodynamics?
Entropy is closely related to the 2nd law of thermodynamics, not the 1st law. The 1st law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted. Entropy, on the other hand, is a measure of the disorder or randomness of a system, which increases over time according to the 2nd law of thermodynamics.
