Edited by GrungeHamster, 12 December 2006 - 05:42 AM.
Science quiz
Started by
Guest_Mirai Naza
, Jun 04 2006 09:42 PM
981 replies to this topic
#826
Guest_GrungeHamster
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Posted 12 December 2006 - 05:34 AM
#827
Kiririn-shi
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Posted 12 December 2006 - 05:37 AM
Errr... not at all, we are talking about electromagnetism here...
#828
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Posted 12 December 2006 - 03:49 PM
Its the inverse of the vacuum permittivity multiplied by 4*pi
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#829
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Posted 12 December 2006 - 03:56 PM
It can't be correct. k has the dimension of a length inverse while your answer is much more complicated.
#830
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Posted 14 December 2006 - 07:27 PM
Is k constant for all complex transformations of the laplacian? Or is it similar to the Jacobian in that it changes for different transformations?
#831
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Posted 14 December 2006 - 07:29 PM
k is a constant number, not an operator.
#832
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Posted 19 December 2006 - 05:08 PM
New question, please....this is just like the mythology quiz...
#833
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Posted 19 December 2006 - 07:33 PM
k=omega/c, omega is the pulse.284. What is the name of the constant k? (2 points)Score board:Eärendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 40Red Anvil - 6kwiksylver - 4SirAnthos - 4Eärendil - 2NoFox - 2
#834
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Posted 20 December 2006 - 01:40 AM
I think he means without Calculus in it...Good ahead and deduct my points 
#835
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Posted 20 December 2006 - 02:51 AM
Nah, he replied the same thing in the mythology quiz... the two last question in the two quizzes were too difficult to be answered. Anyway for this question, there is no calculus, it's just naming a constant.
#836
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Posted 03 January 2007 - 11:41 AM
Long live the science quiz. Now this is just a guess, cos this is way out of my league, but with a bit of research i think k is the angular wavenumber or circular wavenumber.
#837
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Posted 03 January 2007 - 04:02 PM
Just the wave number.285. What is the andgle formed by the vector k with E and B? (2 points)Score board:Eärendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 40Red Anvil - 6kwiksylver - 4SirAnthos - 4Eärendil - 2NoFox - 2Sada - 2
#838
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Posted 03 January 2007 - 05:52 PM
It should be 90º as it is a vectorial product
He saw the Mountain silent rise
where twilight lies upon the knees
of Valinor, and Eldamar
beheld afar beyond the seas.
#839
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Posted 03 January 2007 - 06:08 PM
Correct.286. Write the approximate Maxwell-Faraday equation in a metal with conductivity sigma? (3 points)Score board:Eärendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 40Red Anvil - 6Eärendil - 4kwiksylver - 4SirAnthos - 4NoFox - 2Sada - 2
#840
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Posted 18 January 2007 - 07:10 AM
Is it 
, where E=J/σ ?
, where E=J/σ ?
#841
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Posted 18 January 2007 - 08:06 AM
Actually there was a little trick since it is not only approximate but exact also 
287. Write the expression for the magnetic induction flux? (2 points)Score board:Eärendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 43Red Anvil - 6Eärendil - 4kwiksylver - 4SirAnthos - 4NoFox - 2Sada - 2
287. Write the expression for the magnetic induction flux? (2 points)Score board:Eärendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 43Red Anvil - 6Eärendil - 4kwiksylver - 4SirAnthos - 4NoFox - 2Sada - 2
#842
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Posted 18 January 2007 - 04:23 PM
I think it is Φf
#843
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Posted 18 January 2007 - 05:53 PM
Yes but what is its expression?
#845
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Posted 19 January 2007 - 03:06 AM
Still not. What I am asking is something like Phi=[insert answer].
#847
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Posted 19 January 2007 - 05:26 PM
Still not. The answer is Phi=B*S where S is the surface.288. What is the theorem of Gauss in electromagnetism? (2 points)Score board:Eärendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 43Red Anvil - 6Eärendil - 4kwiksylver - 4SirAnthos - 4NoFox - 2Sada - 2
#848
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Posted 19 January 2007 - 09:15 PM
Damn this aint easy but i am going to try...
I don't even know what it says but this is what i found out 
I don't even know what it says but this is what i found out
Edited by Ramza85, 19 January 2007 - 09:16 PM.
#849
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Posted 20 January 2007 - 03:02 AM
Correct.289. What is the equivalent of Gauss theorem for magnetic field (just the name of the theorem)? (2 points)Score board:Eärendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 43Red Anvil - 6Eärendil - 4kwiksylver - 4SirAnthos - 4NoFox - 2Ramza85 - 2Sada - 2
#850
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Posted 20 January 2007 - 05:25 AM
My dear i actually got it right ^_^And for the next one would that be Coulomb's Law?
