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Old Oct 5, 2007 | 08:43 AM
  #21  
StangMahn's Avatar
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From: That town you drive through to get to Myrtle Beach
Originally Posted by AndrewM
E=1/2(6x20+5x12) haha beat that smart ppl!!!
Uh, 90...that's not a particularly hard one (I know someone's thinking it, thats what she said)
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Old Oct 5, 2007 | 09:07 AM
  #22  
Strickland's Avatar
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From: Atlanta GA
So we still have the probablility Q left?
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Old Oct 5, 2007 | 09:56 AM
  #23  
AndrewM's Avatar
 
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Originally Posted by StangMahn
Uh, 90...that's not a particularly hard one (I know someone's thinking it, thats what she said)

hey! you got it! haha i guess that wasnt hard enough... ill think of somthing Sooner or later
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Old Oct 5, 2007 | 10:30 AM
  #24  
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From: BC
Mathletes... ready... set.... GO!
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Old Oct 5, 2007 | 10:56 AM
  #25  
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From: Eden Prairie, MN
e=mc^2 anyone???
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Old Oct 5, 2007 | 11:41 AM
  #26  
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From: Atlanta GA
E and M are your variables.

Energy equals mass time the speed of light squared.
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Old Oct 6, 2007 | 08:37 AM
  #27  
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From: Eden Prairie, MN
Alright, prove e=mc^2 haha
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Old Oct 6, 2007 | 09:21 AM
  #28  
htwag's Avatar
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OK, math heads, explain why, when dividing 6 by 1/3, the answer is 18. Don't show me the math - explain it as you would to a 4th grader. Remember, it has to make sense to a kid. No math, just an explanation.
I know why - I just want see how good you math heads are with explanations. Guess what I do Monday - Friday.
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Old Oct 6, 2007 | 12:57 PM
  #29  
codeman94's Avatar
 
Joined: December 14, 2004
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From: Goshen, IN
its like a double negitive....you are divding by a division...this is the same as multiplying.....I know its not very clear...but I got the point.
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Old Oct 6, 2007 | 07:14 PM
  #30  
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Yep. no one has answered my finite question yet :P
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Old Oct 8, 2007 | 05:56 AM
  #31  
blue's Avatar
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finite.

ok, if I'm counting right there's 14 ways for two people to sit adjacently in six desks in 2 rows, forwards and backwards. Out of 6 x 5 x 4 x 3 x 2 x 1 = 720 possible arrangements, 14/720 ~ .01944 so 1.9 %

oops, I see that there was only one row,

That should be 10 ways of arranging the two, still 720 possible seating combinations, so 1 in 72?

I counter from a friend's homework, don't nobody feel silly bein scared've this one, its senior calculus in a quantum mechanics problem.


ahem.

Use a taylor polynomial to show that the Rayleigh-Jeans equation (intensity=2(pi)ckT/(wavelength)^4) {where c is the speed pf light, k is boltzman's constant, and T is the absolute temperature in kelvin}, gives approximately the same values as Planck's law (intensity= (2(pi)c^2)/(wavelength)^5 x h/(e^(hc/[(wavelength)kT])-1) {where h is planck's constant} for large wavelengths.



These two formulas can be found at
http://en.wikipedia.org/wiki/Rayleigh-Jeans_law
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Old Oct 8, 2007 | 06:24 PM
  #32  
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Hint for the finite. Calculate the probability for the couple to physically sit beside each other then substract from 1.

Remember (1)(2)(3)(M)(F)(4) is not the same as (1)(2)(3)(F)(M)(4)
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Old Oct 9, 2007 | 12:55 AM
  #33  
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ha

oh, non-adjacent. whoopsie. 71/72 or 98.6% ?
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Old Oct 14, 2007 | 03:23 PM
  #34  
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From: Holland
This one still haunts my dreams, 10 years after first studying it back in college:


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Old Feb 24, 2008 | 03:47 AM
  #35  
blue's Avatar
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Speaking of which

I was staring at some incomprehensible equations today, and thought of you guys. I can't begin to type them here, but you can "look inside" my textbook on amazon.com

http://www.amazon.com/Modern-Supersy...3849758&sr=8-6
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Old Feb 24, 2008 | 09:38 AM
  #36  
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From: PDX
man, i haven't done this forever... it is nice to know that all i need is a quick refresher to remember these

edit: oh geez!! I didn't see the second page when i posted that ^^^
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Old Feb 27, 2008 | 06:05 AM
  #37  
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theres a reason why im glad im not in school anymore...and i think i just remembered why...
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