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Choose 1st, 2nd, or 3rd Law of Thermodynamics. and Tell me why you chose that answer. (make ur answers funny or serious, I am open to both).

2006-07-17 02:44:29 · 12 answers · asked by mox 3 in Science & Mathematics Physics

12 answers

THE LAWS OF THERMODYNAMICS for Sanitation Engineers
0th: There is s.h.i.t.
1st: You can't get rid of it.
2nd: It gets deeper.
3rd: A nice, empty trashcan is wishful thinking.

KEEP SHOVELING!!

2006-07-17 02:57:01 · answer #1 · answered by prune 3 · 0 1

There exists the Zero law ,the 1st,2nd and the 3rd law of thermodynamics.All these laws explain what happens to energy at different frames of references.
There seems to be an additional theory which said all laws are the same in all frame of references.
However its not the case with the phenomena of energy which thermodynamics Law applies to.
To interpret laws it is more appropriate to Utilize a Lawyer equivalent to the caliper of a Physics Lawyer from Philadelphia.

2006-07-17 03:27:02 · answer #2 · answered by goring 6 · 1 0

I prefer the first law, because it gives you this very nice slogan:

"Conserve energy. It's not just a good idea, ITS THE LAW."

P.S. zcommodore, the second law of thermodynamics states that entropy always increases. Entropy is defined as the unique state function such that dS=dQ/T, where S is entropy, Q is the quantity of thermal energy absorbed by the system, and T is the absolute temperature of the system. As you can see from this definition, entropy has only to do with the movement of heat from one body to another. It is NOT a measurement of disorder, in fact it has nothing to do with disorder or degeneration. What it does tell us, is that if a physical process results in the conversion of some amount of energy into heat, that heat may not be removed from the system without expelling at least S*T joules of energy into the surroundings, where ΔS is the reduction in entropy caused by removing the heat from the system and T is the temperature of the surroundings (assumed to be large enought that the change in the surrounding's temperature is negligable). If the surroundings are hotter than the system itself, this actually takes more energy than you get by removing the heat from the system in the first place, meaning that you need to use energy to get the heat out of the system. If the surroundings are colder then you can gain energy by removing heat from a system (which is what heat engines do) but the amount you gain will be less than the amount of heat you extracted. Now, if you could find a nice zero-temperature heat sink, you could recover all the energy used as heat, but no such thing exists in the universe (and by the third law, cannot exist). In fact, the lowest-temperature heat sink we can find (without producing it artificially at greater entropy cost than it can absorb) is the background radiation of the universe, and any energy radiated into that is irretrievably lost. That is what the second law says: "energy converted into evenly distributed heat is irretrievably lost."

Now, what does this have to do with evolution? Absolutely nothing. Creationists, who are ignorant of all useful science, often claim that the second law requires the universe to get more disordered over time, which contradicts the general trend of evolution towards increasing order (although, I would be hesitant to say that such a trend even exists. Increasing complexity, yes, but order? The haphazard and probabilistic manner in which the biochemical functions of a cell are carried out has never struck me as very orderly. In any case, do note well that there is nothing in the theory of evolution that requires organisms to increase in either complexity or order and that many highly favored mutations result from a decrease in complexity, in which case evolution favors simplification). But as I have explained, the second law does NOT say that the universe is getting more disordered all the time, becuase entropy has nothing to do with disorder. The only thing that it might say is that the energy available to life to do useful work is constantly decreasing, which if the Earth were a closed system might be a meritorious claim. It would not, however, be an objection against evolution so much as the existence of life itself, and since we know life exsists, it must be wrong. And indeed it is - the Earth is anything but a closed system, and in fact recieves a constant influx of energy from the sun. Since this energy is at a very high temperature (roughly 5780 K), and space is at a very low temperature (3 K), nearly all of that energy can be extracted to do work, and life has no shortage of usable energy.

If you wish to actually learn about the theory of evolution, and why we know (yes, know) it to be essentially correct, you would be well advised to start with www.talkorigins.org

2006-07-17 02:59:13 · answer #3 · answered by Pascal 7 · 0 0

I'll choose the zeroth: if two bodies are in thermal equilibrium with another one , then the two are in thermal equilibrium between them ..like if 2 guys like both a girl, then the 2 guys may like each other as well :).. ok, it has nothing to do with the law, I just want the 2 points I suppose :P

2006-07-17 03:15:59 · answer #4 · answered by jueves 4 · 0 0

The universe had a beginning, therefore there must be a cause to it. - Yes, the big bang, see how simple that was. A cell cannot come about by other processes like Abiogenesis (according to cell theory). - And if you were to prove that you would have a Nobel Prize. However, the energy in the universe must have come from somewhere according to the law of causality. - Yes, the previous universe, ad infinitum.

2016-03-26 21:29:44 · answer #5 · answered by Anonymous · 0 0

The Kelvin-Planck statement of the 2nd law (There exists no cycle which extracts heat from a reservoir at a single temperature and completely converts it into work)

It means that I'm a born looser!!!

2006-07-17 06:45:57 · answer #6 · answered by flandargo 5 · 0 0

Big bang is in conflict with 1st Law of Thermodynamics.
I believe 1st Law of Thermodynamics,
so I do not believe big bang.

2006-07-17 03:36:04 · answer #7 · answered by Thermo 6 · 0 0

I'm not sure what you're asking here but I do remember that the 2nd law pretty much disproves evolution. Basically, it says that everything eventually degenerates to it's most useless state.

2006-07-17 02:50:24 · answer #8 · answered by Anonymous · 0 0

lst: U=W-Q, conservation of mass and energy. reaction tends to be exothermic. (Great!!! energy is always conserved, now we dont have to worry about it!!!! right? wrong!)

2nd: lol, it too applies to my room. the delta S of the universe is ALWAYS positive. reactions lead to thermal equilibrium!!! BE WARY OF THE "HEAT DEATH"! hahahaha. lol

by the way, there is always a 0th law.

2006-07-17 03:14:15 · answer #9 · answered by cool nerd 4 · 0 0

First Law: You can't win.

Second Law: You can't break even.

Third Law: Diamonds are your friend.

2006-07-17 02:49:32 · answer #10 · answered by mathematician 7 · 0 0

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