|MadSci Network: Physics|
To move an object using sound you need a lot of sound energy and a lot of knowledge about the object you are attempting to move. Additionally, its far more likely to succeed in moving an object if the sound comes from the direction oposite to the intended direction of motion. Unfortunately, the kind of sound we are talking about here is equivalent to an explosion, and moving an object with an explosion is likely to cause far too much colateral damage if any considerable distance exists between the object and the point of origin of the sonic source. Needless to say, speakers cannot generate that much sound energy, conventional explosives or compressed gas would work much better. Keep in mind that the amount of energy spent to achieve this far surpases the amount of work actually required to move the object. Most of the energy is disipated in the surrounding environment. So this is not very efficient. There are far more practical ways to move objects: the obvious ways: by car, train, or in person, etc.
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