tag:blogger.com,1999:blog-34480619.post6256697791875222412..comments2024-03-11T13:47:03.621-05:00Comments on Physics and Physicists: How Long Would You Have To Yell To Heat A Cup Of Coffee?ZapperZhttp://www.blogger.com/profile/15861398273820851809noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-34480619.post-45019465782141626142009-03-30T09:24:00.000-05:002009-03-30T09:24:00.000-05:00Isn't the reference for sound 10^-12 W = 0 dB, so ...Isn't the reference for sound 10^-12 W = 0 dB, so 80 dB is 0.1 mW, not 1 mW, right? That makes their answer too small by a factor of 10.Tomhttp://blogs.scienceforums.net/swansont/noreply@blogger.comtag:blogger.com,1999:blog-34480619.post-36222427291514747672009-03-28T13:54:00.000-05:002009-03-28T13:54:00.000-05:00Yeah, they made quite a bit of assumption in deriv...Yeah, they made quite a bit of assumption in deriving such a thing. For the length of time it takes to heat it up, a lot of heat would have escaped already.<BR/><BR/>I suppose one can look at it as the "shortest time" possible to heat the coffee.<BR/><BR/>Zz.ZapperZhttps://www.blogger.com/profile/15861398273820851809noreply@blogger.comtag:blogger.com,1999:blog-34480619.post-57836920880601001042009-03-28T11:57:00.000-05:002009-03-28T11:57:00.000-05:00It's a cool question, but am I wrong to get annoye...It's a cool question, but am I wrong to get annoyed that the answer they gave was a spherical cow? (They assumed perfect insulation.) In anything approximating the real world it can't be done.Ben Lilliehttps://www.blogger.com/profile/07311612647895683075noreply@blogger.com