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Author Topic: A2 Edexcel Physics Doubts! Please help me!  (Read 1977 times)

Offline Vampire-Love4ever

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A2 Edexcel Physics Doubts! Please help me!
« on: May 08, 2011, 12:43:31 am »
Hi all,

I have collected my doubts from A2 Edexcel Physics new past papers. Please help me out with them! I'm completely self-studying my A-levels cos my teachers are of no help at all!!!!!!!
I know I could have posted them in the 'Edexcel Physics thread' but I making this new thread to avoid confusion!
Thanks much in advance!
Plzzzzzzzzzzzzzzzzz help me out here!!!!!!!!!
« Last Edit: May 08, 2011, 01:09:56 am by Vampire-Love4ever »
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Offline Vampire-Love4ever

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #1 on: May 08, 2011, 12:46:33 am »
The answer for part (a) is within range of 38-57mm but I have no idea how to do it!
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Offline Vampire-Love4ever

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #2 on: May 08, 2011, 12:47:31 am »
According to MS: the answer is C.
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Offline Vampire-Love4ever

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #3 on: May 08, 2011, 12:48:23 am »
According to MS: answer is D.
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Offline Vampire-Love4ever

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #4 on: May 08, 2011, 12:49:57 am »
The (b) part!
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Offline Vampire-Love4ever

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #5 on: May 08, 2011, 12:51:43 am »
Part (b), (c) & (d)!
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Offline Vampire-Love4ever

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #6 on: May 08, 2011, 12:53:29 am »
Now the following questions will be from Unit 5!

According to MS: the answer is B!
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Offline Vampire-Love4ever

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #7 on: May 08, 2011, 12:55:36 am »
According to MS: answer is C!
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Offline Vampire-Love4ever

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #8 on: May 08, 2011, 01:00:22 am »
According to MS: answer is 5.8 x 10^22 molecules! I got is as 6.4 x 10^22 molecules :S
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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #9 on: May 08, 2011, 01:03:11 am »
Why do we have to divide by 40? :S
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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #10 on: May 08, 2011, 01:04:48 am »
Part (b.i.)! Mark scheme attached! I don't understand this question at all!
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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #11 on: May 08, 2011, 01:06:17 am »
According to MS: answer is B!
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Offline Vampire-Love4ever

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #12 on: May 08, 2011, 01:07:12 am »
According to MS: answer is C!
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Offline Assi1993

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #13 on: May 08, 2011, 11:29:14 am »
Quote from: Vampire-Love4ever on May 08, 2011, 12:49:57 am
The (b) part!

you can find acceleration from this formula
acceleration=radius x (angular velocity)^2
a=r(w^2)
as u can see the diagram is drawn to scale! which means u can measure the radius from the diagram with your scale!
and the angular velocity you have calculated in the above a) part

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Offline Assi1993

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Re: A2 Edexcel Physics Doubts! Please help me!
« Reply #14 on: May 08, 2011, 11:45:44 am »
done on it
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