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Science quiz

Started by Guest_Mirai Naza , Jun 04 2006 09:42 PM

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#851 atomicknight

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Posted 20 January 2007 - 06:22 AM

Coulomb's law deals with electric fields, not magnetism ^_^The actual answer should be Ampere's law.

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#852 Kiririn-shi

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Posted 20 January 2007 - 07:00 AM

AK is correct.290. What is the expression of the Ampere's theorem? (2 points)Score board:E�rendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 43Red Anvil - 6E�rendil - 4kwiksylver - 4SirAnthos - 4atomicknight - 2NoFox - 2Ramza85 - 2Sada - 2

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#853 Guest_Ramza85

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Posted 20 January 2007 - 07:04 AM

I don't know what differential means or Integral but this is what i found:

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#854 Kiririn-shi

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Posted 20 January 2007 - 07:43 AM

No, this is a variation of the Maxwell-Ampere equation, not the Ampere theorem.

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#855 Guest_Hagi

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Posted 20 January 2007 - 08:52 PM

Still not. The answer is Phi=B*S where S is the surface.

The "A" is from areaPhi=B*Aedit:I=U/R ?

Edited by Hagi, 20 January 2007 - 08:53 PM.

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#856 atomicknight

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Posted 21 January 2007 - 12:06 AM

The "A" is from areaPhi=B*A

B * A would be correct. However, your last answer used notation that was not equivalent to that expression. Plus it helps to define your variables in your answer.Anyhow, copy+paste from Wikipedia because it's too much work to type up mathematical symbols using HTML

$Posted Image$ And now that I've taken multivariable calculus, I actually know what that means

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#857 Kiririn-shi

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Posted 21 January 2007 - 07:12 AM

Well if A is vector area, Hagi is correct. Correct for this question also AK. Let's start a series of electric-magnetic analogies.291. What is the magnetic equivalent of electric intensity? (2 points)Score board:E�rendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 43Red Anvil - 6E�rendil - 4kwiksylver - 4SirAnthos - 4atomicknight - 4Hagi - 2NoFox - 2Ramza85 - 2Sada - 2

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#858 Guest_SirAnthos

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Posted 19 March 2007 - 09:09 AM

A magnetic field?

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#859 Kiririn-shi

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Posted 19 March 2007 - 01:47 PM

The analogy for magnetic field is electrical field so the answer is incorrect.

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#860 E�rendil

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Posted 19 March 2007 - 10:53 PM

Isn't it magnetic flux?

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#861 Guest_Nightmare !!!

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Posted 20 March 2007 - 09:57 AM

Intensity of Magnetic Field

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#862 Kiririn-shi

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Posted 14 April 2007 - 05:45 PM

E�rendil is correct.292. What sort of electric component do two parallel surfaces with opposite charges constitute? (2 points)Score board:E�rendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 43E�rendil - 6Red Anvil - 6kwiksylver - 4SirAnthos - 4atomicknight - 4Hagi - 2NoFox - 2Ramza85 - 2Sada - 2

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#863 E�rendil

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Posted 14 April 2007 - 05:59 PM

They constitute a capacitor

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#864 Guest_basf11214

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Posted 28 April 2007 - 06:26 AM

Is it called a condenser (or is that the same as a capacitor?)

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#865 Kiririn-shi

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Posted 30 May 2007 - 08:18 PM

It is the same...293. In a capacitor, where does the electrical field have straight parallel lines? (2 points)Score board:E�rendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 43E�rendil - 8Red Anvil - 6kwiksylver - 4SirAnthos - 4atomicknight - 4Hagi - 2NoFox - 2Ramza85 - 2Sada - 2

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#866 E�rendil

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Posted 30 May 2007 - 10:55 PM

It depends on the shape of the capacitor, but if it consists of two parallel plates, only inside it (far from the borders of the plates).

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#867 Kiririn-shi

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Posted 31 May 2007 - 03:33 AM

Correct.294. What is the value of the permitivity in the void? (1 point)Score board:E�rendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - 43E�rendil - 2Red Anvil - 6kwiksylver - 4SirAnthos - 4atomicknight - 4Hagi - 2NoFox - 2Ramza85 - 2Sada - 2

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#868 E�rendil

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Posted 31 May 2007 - 10:27 PM

Its value is 8.85*10^(-12) F/m.

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#869 Guest_Vibronater

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Posted 09 June 2007 - 06:24 PM

Ok. Ody is definetly gone (it's in the Staff Forum), so I have a high amount of points (so does E�rendil), I figured I can take it over. I can't PM Ody, and I'm sure she won't mind.So, I'll give E�rendil the points for that (I know nothing about magnetic fields), and we will move on to astrophysics.So the points now:E�rendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - I295. How is the only way scientists believe there is "Dark Matter"?

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#870 Guest_xXx|Mage|xXx

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Posted 09 June 2007 - 06:26 PM

they find it by gravitational lensing

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#871 Guest_Vibronater

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Posted 09 June 2007 - 06:35 PM

Correct.E�rendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - IEllusionary Mage - 2296. Give an example of it.

Edited by Vibronater, 09 June 2007 - 06:36 PM.

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#872 Guest_xXx|Mage|xXx

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Posted 09 June 2007 - 06:54 PM

One of its eg are Einstein ring

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#873 Guest_leones03

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Posted 09 June 2007 - 08:20 PM

You'd start in a pre-determined region with the Pokedex for there, then you beat the E4 and get the National dex, which you can complete, just like any game past RBY and more like GSC with the Multi reigon.

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#874 Guest_Vibronater

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Posted 09 June 2007 - 09:24 PM

MageKing is right.E�rendil - IIRed Anvil - IIatomicknight - ICoatlicue - Ibasf11214 - IEllusionary Mage - 2MageKing-2297. What is a Starburst Galaxy?

Edited by Vibronater, 09 June 2007 - 09:25 PM.

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#875 Ish

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Posted 09 June 2007 - 10:36 PM

a starburst galaxy is a galaxy that's in the process of an exceptionally high rate of star formation, compared to the usual star formation rate seen in most galaxies. in other words starburst galaxies are temporary