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Physics geeking
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<blockquote data-quote="Josh Millward" data-source="post: 148437" data-attributes="member: 970"><p>Re: Physics geeking</p><p></p><p>Very tricky wording of the question, Jay! </p><p></p><p>The thing is that the speed of sound is not the same for all materials. It travels much faster in water than it does in the air with considerably less loss over distance. </p><p></p><p>The real challenge here is characterizing the energy transfer between the air and your beer. There will be considerable loss on account of the abrupt change in density between the air and the beer, even more pronounced if your beer is in a glass container versus the ubiquitous "red solo cup" or a single-walled aluminum can (I'm not too familiar with the double walled aluminum bottles, but I would expect them to be somewhere in between. </p><p></p><p>Another possibly important detail here is that a glass or bottle would be a resonant chamber with an open top. </p><p></p><p>Also, the beer is quite small in comparison to the frequencies being generated by the subwoofers, I would expect the subwoofers to simply pound the carbonation out of the beer ergo making it flat as a pancake. The heat from the driver's motor structure ends up heating the interior of the cabinet and making the walls of the cabinet warm, which is also conducted to the beer sitting atop the subwoofer. </p><p></p><p>Nobody likes flat, warm beer. </p><p></p><p>Ergo, don't put your beer on the subs if you plan on drinking more of it. (Besides, I'll probably come by and toss it in the trash can because my subwoofers are not tables.)</p></blockquote><p></p>
[QUOTE="Josh Millward, post: 148437, member: 970"] Re: Physics geeking Very tricky wording of the question, Jay! The thing is that the speed of sound is not the same for all materials. It travels much faster in water than it does in the air with considerably less loss over distance. The real challenge here is characterizing the energy transfer between the air and your beer. There will be considerable loss on account of the abrupt change in density between the air and the beer, even more pronounced if your beer is in a glass container versus the ubiquitous "red solo cup" or a single-walled aluminum can (I'm not too familiar with the double walled aluminum bottles, but I would expect them to be somewhere in between. Another possibly important detail here is that a glass or bottle would be a resonant chamber with an open top. Also, the beer is quite small in comparison to the frequencies being generated by the subwoofers, I would expect the subwoofers to simply pound the carbonation out of the beer ergo making it flat as a pancake. The heat from the driver's motor structure ends up heating the interior of the cabinet and making the walls of the cabinet warm, which is also conducted to the beer sitting atop the subwoofer. Nobody likes flat, warm beer. Ergo, don't put your beer on the subs if you plan on drinking more of it. (Besides, I'll probably come by and toss it in the trash can because my subwoofers are not tables.) [/QUOTE]
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