as water can exist in different forms and cannot be eliminated, does this apply to energy generated .?
594160
static energy at birth and cosmic energy at death(energy can neither be created or destroy,but can change from one form to another)
243705
1. Energy cannot be created or destroyed only changed in form. 2. The total energy of any closed system is = 0\n\nA static generator does not create energy it only changes its form from mechanical to electrical.  Search on the web for perpetual motion for a more in depth explanation.\nalso search thermodynamics, first and second laws.
273976
Look, energy is conserved, period.  It may be in the form of PE, KE, heat, etc., but it is always conserved.  My best guess is that whatever experimentalists you're thinking of probably neglected to consider heat effects of some other energy drain/source.\n\nBy the way, I think you now hold the record for the worst spelling and punctuation ever on Yahoo! Answers.
1141725
Because is just a fake: chemically speaking it is impossible to oxidize water in a combustion engine in order to win energy. Water already is the product of an oxidation. Would be similar, if somebody invent a stove which is run on ash instead of wood.
36155
The previous answer is way off.  Oil is not considered a renewable resource.  As oil is removed it is either replaced by water if the water can sink to that depth or it is replaced by air or fall in.\nIn some cases water is pumped in to get the last of the oil out.
1007756
Energy is not merely a concept.  It is a definable, measureable, real thing.  Apply energy to an object, and physical properties of the item change in a measureable fashion.  For example, apply flame to a pot of water, and the temperature of the water increases.
495653
states that energy never vanishes it just chamges into another form of energy
643494
well\n\nlets take an example\n\nthe sun radiates solar energy. it is then trapped by plants and made into chemical energy through photosynthesis. and then  the plant is eaten by an animal. the energy is then converted to heat energy and lost to the environment due to movement.\n\nso, you see. energy is not created or is it destroyed but it changes state as it moves in the biosphere. this is called conservation of energy.
401720
"The well developed way of splitting water is by electrolysis. If fossil fuels, e.g. coal, oil or natural gas, are used to generate the electricity, there is no advantage over using the fossil fuels directly. Indeed you still get all the CO2, and there is a considerable loss of energy. Therefore, the large scale use of hydrogen depends on using either nuclear or solar electricity. In both the nuclear and solar cases, there are possible but undeveloped technologies that don't use electricity as an intermediate form of energy. [2003 September: There is a thermochemical process for splitting water that is claimed to be twice as efficient as elactrolysis. Here's an article on the sulfur-iodine cycle by Ken Schultz of General Atomic given at a Stanford University Global Climate and Energy sponsored meeting in 2003 April. To get good efficiency it requires reactors operating at a higher termperature (950 C) than present power reactors. Schultz's article also discusses solar thermal production of hydrogen. (There are also proposals to combine getting heat for houses and chemical processes and electrolysis with some saving of energy.)"\n\n"Set up an electrolysis apparatus to use solar energy to separate water into hydrogen and oxygen gases."\n\n"Regenerative - Currently being researched by NASA; closed loop form of power generation that uses solar energy to separate water into hydrogen and oxygen."\n\n"Researchers are also exploring the molten carbonate fuel cell, which can generate energy from coal-based fuels, and regenerative fuel cells, which use solar energy to separate water into hydrogen and oxygen."
267868
No.  Obviously life exists despite the second law of thermodynamics.  The chemical processes associated with living organisms use energy from the surrounding evironment to create more order.  Our evolutionary ancestors did that too.  I see no way in which evolution contradicts the second law of thermodynamics any more than the existance of life does.
70547
I think what you are really asking is what different forms of energy convert to other forms of energy.  Mechanical energy can be converted to heat through friction.  Electrical energy can be converted to sound energy with the use of varying electrical currents and permanent magnets.  The splitting of atoms releases huge amounts of electromagnetic radiation of a huge variety, from electrons, to photons, heat, light, etc.  Light energy (photons) can interact with semiconductors in solar cells to produce electrical energy, also known as electromotive force.  I am sure someone has a comprehensive list of the primary energies that we know about.  \n\nIt may help, however, to discuss energy in terms of storing it.  Gas under high pressure in a closed cylinder has high potential energy.  The release of this pressure can cause thrust (like a rocket), or cause a super-sonic shock wave that can blow things up.  Certain chemicals have energy stored in them which is released through chemical reactions.  A rotating wheel has energy stored in the mass about the rotating axis, known as rotational momentum.  The magnetic field in an inductor, like a vehicle ignition coil stores energy in the field in the core, and releases it when the current to the coil is interrupted.  \n\nIn simpler terms, mechanical energy can be turned into heat, light, electromotive force, or pressure. Chemical energy can make heat, light, electromotive force, or pressure (not a complete list).  Atomic reactions (fission or fusion) release huge amounts of energy all across the electromagnetic spectrum.  Hope this is food for thought...\n\nSee a study of thermodynamics and entropy.  It would appear that all energy flow is headed in only one direction, always at a net loss.  See the link.
482027
Heat is energy. It can be transformed from heat to another form of energy like mechanical energy, but the the second law of thermodynamics states that for a closed system entropy either increases or stays the same. This means that wasted heat energy in any system either increases or stays the same unless additional energy enters or leaves the system. If the system is the entire universe, then anytime work is done, either none or more heat is produced . . . the universe can't "unheat" or cool itself (as a whole). Pockets of the universe can reduce entropy, but only by shifting that entropy to another location in the universe.\n\nWhat does this mean? It means that all forms of work produce heat as a byproduct. Even wind produces frictional heat, and wind comes from temperature gradients (uneven heat). Electricity is produced by heat (even nuclear fission power or future fusion power heat water to produce steam to turn a turbine which turns a generator that produces electricity). Hydrogen is produced by reforming technology in refineries and requires heat. Hydrogen can be produced from water by using electricity which uses heat. Ion thrusters use electricity (currently from small nuclear power systems in space probes which produce heat to produce the needed electricity). \n\nI don't think that we're going to get away from heat energy anytime soon.
15241
Well yes and no. According the the principal of conservation of energy there is a set amount of energy and it can only be converted, not created or destroyed. But as we look into more complicated realms of physics, we understand that matter can be converted  into energy, and vice-versa.
349291
Most forms of electricity generation involve heating water (burning fossil fuel, solar power, etc) to form steam that turns a turbine.  The excess heat releases a large amount of wasted energy, energy not used to produce electricity.  Hydroelectric power, on the other hand, uses only moving (cool) water to push the turbine, so no heat energy is wasted and no fuel is consumed.  The main problem with hydroelectric power is that rivers end up dammed to collect enough water to move the turbines; dams alter the natural hydrology of their environment by flooding low lying areas, slowing waterflow, and impeeding animal migration.
1126712
Yes, we've known about electrolysis for a long time.  It's how submarines make breathable air while submerged -- they electrolyze seawater and just bubble the hydrogen overboard while releasing oxygen gas into the boat.  However, it takes a lot of energy to convert water into hydrogen and oxygen, which isn't a concern in a small space with a nuclear reactor to power everything, but it isn't a 100% efficient conversion of electrical energy into chemical potential energy.  There is a loss of energy due to heat, for instance (the electrodes heat up with current passing through them, and even the wiring that carries it there), and as with any energy system, you have to take entropy into account.  Depending on who you talk to, you can get anywhere from 50% up to 94% efficiency, but you'll always put more energy into it than you get out of burning the hydrogen later on down the line.  The reason we're still researching fuel cell and hydrogen cars comes from the mechanical efficiency of the different types of engines -- you currently still get more bang for your buck out of fuels than from an electric motor-driven car.  The energy is only reusable if burning the hydrogen generates the electricity to separate the water back into hydrogen again, in which case, you're talking about a perpetual motion system, and that's physically impossible.
967629
It is theoretically possible to make anything a gas (including that).  It would take way too much energy to do so though.
903700
That is definitely not correct!!\n\nFor example water (H20) is very very different from the two gases that make it namely hydrogen (H2) and oxygen (O2)