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Author Topic: Physics Help HERE ONLY !!  (Read 81545 times)

Offline SGVaibhav

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Re: Physics Help HERE ONLY !!
« Reply #30 on: May 23, 2009, 05:11:24 pm »
wow nid404 is upto physics now?
 ???
u are an all rounder i guess
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nid404

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Re: Physics Help HERE ONLY !!
« Reply #31 on: May 23, 2009, 05:15:40 pm »
that made me feel good. thanks bro. but frankly physics is one of my weaker subjects. im good wid chem and bio. but i help in evry possible way i can.


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Offline godfather93

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Re: Physics Help HERE ONLY !!
« Reply #32 on: May 23, 2009, 05:16:54 pm »
Quote from: mana on May 23, 2009, 04:56:09 pm
Quote from: godfather93 on May 23, 2009, 04:54:49 pm
it's a very similar arrangement to the cathode ray tube.
can u explain n tell me
please :)

here's a rough drawing of the thing
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Offline Bani

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Re: Physics Help HERE ONLY !!
« Reply #33 on: May 23, 2009, 05:32:42 pm »
Quote from: godfather93 on May 23, 2009, 05:16:54 pm
Quote from: mana on May 23, 2009, 04:56:09 pm
Quote from: godfather93 on May 23, 2009, 04:54:49 pm
it's a very similar arrangement to the cathode ray tube.
can u explain n tell me
please :)

here's a rough drawing of the thing

mana, for part ii), the readings that would need to be taken are: First, record the background radiation (without the source and absorber), then record the radiation count with the source (using the detector) and lastly, record the radiaiton count with source and absorber (using the detector).

P.S Did anyone try drawing for Q7a), May/June 2008, paper 3???
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Offline godfather93

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Re: Physics Help HERE ONLY !!
« Reply #34 on: May 23, 2009, 05:34:34 pm »
yes, very easy.
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Offline Bani

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Re: Physics Help HERE ONLY !!
« Reply #35 on: May 23, 2009, 05:40:16 pm »
Quote from: godfather93 on May 23, 2009, 05:34:34 pm
yes, very easy.

On Fig 7.1, aren't the wavefronts suppossed to reflect to the left?
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Offline godfather93

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Re: Physics Help HERE ONLY !!
« Reply #36 on: May 23, 2009, 05:42:16 pm »
the ray is supposed to be reflected to the right. the wave fronts are at 90o to the main big arrow that u draw.
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Offline Bani

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Re: Physics Help HERE ONLY !!
« Reply #37 on: May 23, 2009, 05:47:05 pm »
Quote from: godfather93 on May 23, 2009, 05:42:16 pm
the ray is supposed to be reflected to the right. the wave fronts are at 90o to the main big arrow that u draw.

Can you attach the drawing? Pleaseee? Like I said before, my teacher didn't really teach us the actual Physics :(
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Offline godfather93

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Re: Physics Help HERE ONLY !!
« Reply #38 on: May 23, 2009, 05:49:11 pm »
if i can draw it, sure. :)
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Offline Bani

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Re: Physics Help HERE ONLY !!
« Reply #39 on: May 23, 2009, 05:58:17 pm »
Quote from: godfather93 on May 23, 2009, 05:49:11 pm
if i can draw it, sure. :)

hehe ok :) Thanks anyways :)

P.S Try your best ;D
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Offline godfather93

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Re: Physics Help HERE ONLY !!
« Reply #40 on: May 23, 2009, 05:59:00 pm »
here's the image!
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Offline qwert101

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Re: Physics Help HERE ONLY !!
« Reply #41 on: May 23, 2009, 06:07:49 pm »
hi people,

whats the formula connecting the number of electrons, time, and charge?
it was on M/J 02

q 7c) i) and ii)

thanks alot, Just need to know the formula, I ve forgotten it! ???
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Offline astarmathsandphysics

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Re: Physics Help HERE ONLY !!
« Reply #42 on: May 23, 2009, 06:09:03 pm »
Quote from: qwert101 on May 23, 2009, 06:07:49 pm
hi people,

whats the formula connecting the number of electrons, time, and charge?
it was on M/J 02

q 7c) i) and ii)

thanks alot, Just need to know the formula, I ve forgotten it! ???

Q=net
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Offline Bani

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Re: Physics Help HERE ONLY !!
« Reply #43 on: May 23, 2009, 06:30:43 pm »
Quote from: godfather93 on May 23, 2009, 05:59:00 pm
here's the image!

Thank-you Thank-you Thank-you
+rep :)
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Offline godfather93

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Re: Physics Help HERE ONLY !!
« Reply #44 on: May 23, 2009, 06:32:28 pm »
ur welcome.
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