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Author Topic: Edexcel PHYSICS Doubts  (Read 136178 times)

Offline Aadeez || Zafar

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Re: Edexcel PHYSICS Doubts
« Reply #450 on: April 24, 2011, 06:18:00 am »
Quote from: red_911 on April 23, 2011, 05:37:52 pm
hey can anyone tell me the approximate wavelength of all the electromagnetic radiation ? there are different values written on different websites ...
thanksss alot in advance
see this it is the stansard one




here
http://www.kollewin.com/EX/09-15-03/electromagnetic-spectrum.jpg
« Last Edit: April 24, 2011, 06:19:58 am by Mr. MUST »
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #451 on: April 25, 2011, 06:22:46 am »
Question from A2 Physics-attached.

Please help :)
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #452 on: April 25, 2011, 07:29:02 am »
Another question :$
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Offline Mike Benn

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Re: Edexcel PHYSICS Doubts
« Reply #453 on: April 25, 2011, 10:52:32 am »
Hey Guys ..Hi.....acutally i needed something kinda file ( which includes different past papers ) so that i could practisce....any one got it..

Much Appreciated if u Helped/..
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Offline astarmathsandphysics

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Re: Edexcel PHYSICS Doubts
« Reply #454 on: April 25, 2011, 03:25:08 pm »
Vampire love4ever
could be to do with emmission spectra
radon decays by alpha emmision. The alpha particles pass through the glass and collect at the top of the tube where they are neutralised and become helium.
. It is subjected to high voltage and becomess ionised. When neutralised the electrons emit characteristic radiation as the drop to the lowest energy level, which is detected.
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #455 on: April 25, 2011, 07:28:10 pm »
Quote from: astarmathsandphysics on April 25, 2011, 03:25:08 pm
Vampire love4ever
could be to do with emmission spectra
radon decays by alpha emmision. The alpha particles pass through the glass and collect at the top of the tube where they are neutralised and become helium.
. It is subjected to high voltage and becomess ionised. When neutralised the electrons emit characteristic radiation as the drop to the lowest energy level, which is detected.

Thanks alot!
What about my second post? Please help me with that as well!
[For the 2nd Question: How do we know that the electrons are pushed towards the top-right (PQ)? I tried using Fleming's Left Hand Rule & I still couldn't get it :S]
Please help!!!!!!!!!
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #456 on: April 25, 2011, 07:42:14 pm »
Quote from: astarmathsandphysics on April 25, 2011, 03:25:08 pm
Vampire love4ever
could be to do with emmission spectra
radon decays by alpha emmision. The alpha particles pass through the glass and collect at the top of the tube where they are neutralised and become helium.
. It is subjected to high voltage and becomess ionised. When neutralised the electrons emit characteristic radiation as the drop to the lowest energy level, which is detected.

How does it get neutralized and change to Helium? :S
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Offline astarmathsandphysics

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Re: Edexcel PHYSICS Doubts
« Reply #457 on: April 25, 2011, 09:35:47 pm »

How does it get neutralized and change to Helium? :S

cos it attracts electrons from the -ve electrode
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Offline astarmathsandphysics

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Re: Edexcel PHYSICS Doubts
« Reply #458 on: April 25, 2011, 09:37:39 pm »
As for the field question, you have to realise that electric current is positve and electrons negative, so electrons travel in the opposite direction to the electric current
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #459 on: April 26, 2011, 09:59:50 am »
Quote from: astarmathsandphysics on April 25, 2011, 09:37:39 pm
As for the field question, you have to realise that electric current is positve and electrons negative, so electrons travel in the opposite direction to the electric current

I realised that but I still couldn't get it- even by using the Left Hand Rule =/
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Offline astarmathsandphysics

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Re: Edexcel PHYSICS Doubts
« Reply #460 on: April 26, 2011, 03:14:14 pm »
I get force up page
Is this what you get?
Current to  right
field into paper
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Offline EMO123

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Re: Edexcel PHYSICS Doubts
« Reply #461 on: April 26, 2011, 03:39:40 pm »
Quote from: Mike Benn on April 25, 2011, 10:52:32 am
Hey Guys ..Hi.....acutally i needed something kinda file ( which includes different past papers ) so that i could practisce....any one got it..

Much Appreciated if u Helped/..
have watch to this link you would get it all if there :)
https://studentforums.biz/pastpapers/
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Offline Vampire-Love4ever

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Re: Edexcel PHYSICS Doubts
« Reply #462 on: April 26, 2011, 04:51:16 pm »
Quote from: astarmathsandphysics on April 26, 2011, 03:14:14 pm
I get force up page
Is this what you get?
Current to  right
field into paper

I am not sure, how do we know that the field is into the paper? :S
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Offline astarmathsandphysics

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Re: Edexcel PHYSICS Doubts
« Reply #463 on: April 26, 2011, 05:48:14 pm »
the crosses represent the tails of arrows
dots represent tips and the field is out of the paper
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Offline Mike Benn

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Re: Edexcel PHYSICS Doubts
« Reply #464 on: April 26, 2011, 09:28:14 pm »
hey .hi...plz can anyone upload Active Text Book ( Cd ) of physix so that i can download it...i really need it badly..
 
Much Appreciated if Helped
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