Can we convert sound energy into electrical energy. This should be possilble per Law of Conservation of energy
341746
Joseq said it first. A microphone is a transducer that converts acoustic energy into electric energy. It does this basically by having a diaphragm attached to a coil that is around a magnet. A speaker does exactly the opposite. It is a transducer that converts electric energy into acoustic energy.
123323
Yes, by requiring to move the woofer with more ampltitude, requireing more force and thus more energy.  An interesting note is that most of the 'extra' energy required for the louder sound is not converted into sound...There is very little energy in sound.  I have read something where it would take over 8 years of 'shouting' to heat a cup of coffee.
701562
Well this is just like sound measurement. First of all you can calculate the amount of energy released from the eq. That would be equal to 2000000*(pi*48000^2)J/s = 1.45 x 10^16 J/s\ntherefore at a distance of 1km, it would be 1.45 x 10^16 J / (pi*1000^2)sm^2 = 4.61 x 10^9 J/sm^2. \n\nRate of energy passing through 5km^2 would be (4.61 x 10^9)x(5x1000)^2 = 1.152 x 10^17 Watts = 115200 Tera Watts
76279
dont see why not. just some simple energy conversions. theoretically it would work, but maybe slow down due to energy lost as heat due to friction and such... but it should work.
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.
997346
See this all depends.... if this were in the philosophy section, then it could be debatable.  But alas- it's in the botany section, so yes- it does make a sound.  Friction is created as it falls through the air and hits the ground, and that friction causes soundwaves.  Whether someone is there or not is irrelevant.  Humans can only pick up on a certain range of decibels anyways.  That doesn't mean just because we can't hear it, it doens't make a sound.  It just means that we can't hear it.  People need to get unstuck from themselves and think outside the human box.  "If humans can't.... must not be possible."  Meh.
717469
I dont understand your question.  How can things work without electricity?  Electricity is power.  And power is essential for any instrument to work.  Do you mean to ask about using alternative electricity?\n\nYeah you can put the fridge in snowpacked mountains which will make things inside cool.
1140369
First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed. The total amount of energy and matter in the Universe remains constant, merely changing from one form to another. The First Law of Thermodynamics (Conservation) states that energy is always conserved, it cannot be created or destroyed. In essence, energy can be converted from one form into another. Click here for another page (developed by Dr. John Pratte, Clayton State Univ., GA) covering thermodynamics.\n\nok now to answer your question:\nWork=PV=nRT\nWork=(2moles)(8.32)(106-21)\nWork=1414.4J
4091
It is possible, since electromagnetic waves carry energy, although you are not really sending electricity, more just transferring energy. Having solar collectors in space that 'beam' energy to earth via microwaves (high refrequency radio waves) has been seriously considered.\n\nAny solar panel is also converting electromagnetic waves to electricity, os the answer is definitely yes.
341744
The easiest example would be to turn on a electrical pump motor. By toggling the switch, it sends electrical current to the motor. This causes the motor to turn, which changes the electrical energy to mechanical energy and then turns the pump, which will then move fluid (Hydraulic Energy).
426415
In theory yes, but what is going to generate the sound?  It would have to be very loud for it to be practical.
1002879
That's a big no.  The same chemical properties that make it so oil and water don't mix makes it so oil cannot conduct electricity...ever!  In fact, to make it do so you'd have to change it's composition so completely it wouldn't really be oil anymore! :-P
231179
Never going to happen for the sort of power you seem to be thinking about. \n\nYou need to research the efficiency of loudspeakers (and by default dynamic microphones). Not a good way of converting energy. \n\nConsider an airport... if was viable they would have banks and banks of mics under the flight path... free noise therefore free energy? Nope - because its just not efficent enough as a concept / system. \n\nConsider also the inertia required to start an memberane moving - thats most of of the sonic energy absorbed before the coil has moved to induct a tinnnnnnny current. \n\nNice thought though - do the research - there might be some milage in a a few really large diagphram dynamic mics catching some sub sonic energy (below about 40Hz). \nAs a tip the real energy is in the low freq. Ultra sonic (+20kHz) is good for close quarters 'vibration' type energy (think microwave).\n\n\nEDIT: to person below me, did you actually read the question? Ultrasound and Sonar are ways of using sound to achieve things, but not to change to electricity as per the original question: 'for producing electricity in order to do work'\n\nThe work Sonar systems and ultrasound systems do is powered by mains and battery power, and the sound is both produced and recaptured internally...
115074
No...there needs to be a medium for sound to travel through, considering the Big Bang was the beginning, there would be no 'ether' for any sound waves. Just as we cannot hear any of the large energy bursts from the sun which occur everyday.
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.
341206
To harness the electricity usefully would be huge, but exceedingly difficult.\n\nYou could fly a kite with a wire string in a thunderstorm. \n\nDON"T TRY THIS UNLESS YOU FULLY UNDERSTAND WHAT HAPPENS WHEN 100,000,000 VOLTS DOES WHEN TRAVELING THROUGH ANYTHING IN ITS PATH!
616514
Generating static electricity.