cooldudeman
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#1101
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#1101
(Original post by fizzbizz)
I believe the anticipated method was to use the fact that peak induced emf is equal to  BAN\omega (as given in the data and formulae booklet)

BAN could be found by reading the peak value of magnetic flux linkage from the graph, and angular speed could be found by seeing how long one oscillation took..

The peak BAN value was 0.55 Wb turns, and the angular speed was  \frac{2\pi}{40\times 10^{-3}}

Plugging these values into the equation gives a value of 86.4V for the induced emf!

It sucks becuase the first thing I thought of was using the BANw formula, but we weren't explicitly given B, A and N so I thought it wasn't applicable
I really don't get why my gradient didn't give me 86. I really checked it. Someone else on this thread got 100, and that's why I'm so obsessed about it. Man I have failed!!!

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fizzbizz
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#1102
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#1102
(Original post by cooldudeman)
I really don't get why my gradient didn't give me 86. I really checked it. Someone else on this thread got 100, and that's why I'm so obsessed about it. Man I have failed!!!

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Hey look, if there was quite a few people to employ your method of finding the maximum emf, they might well have an alternative in the mark scheme! They might have a range of acceptable values, say 80 to 120!

Measuring the gradient manually is surely a valid method as opposed to using calculus
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cooldudeman
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#1103
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(Original post by fizzbizz)
Hey look, if there was quite a few people to employ your method of finding the maximum emf, they might well have an alternative in the mark scheme! They might have a range of acceptable values, say 80 to 120!

Measuring the gradient manually is surely a valid method as opposed to using calculus
That's a massive range but I hope you're right. Try do q2bi on page 134 without the gradient methpd (that's the way the MS does it).

Nelson thornew BTW. The graph given is a bit different but A and N are constants so it shouldn't make a difference.

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Robmarkey
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#1104
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#1104
Sorry I've been working all weekend, give me 20minutes and the paper will be up.(only section B)
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cooldudeman
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#1105
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#1105
(Original post by Robmarkey)
Sorry I've been working all weekend, give me 20minutes and the paper will be up.(only section B)
Yeah please would you asap

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kingm
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#1106
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#1106
(Original post by Robmarkey)
Sorry I've been working all weekend, give me 20minutes and the paper will be up.(only section B)
Hey man, don't worry about not having section A complete before putting it up. It's great that you want to get everything complete and checked before you post it but the main thing is that we get to see the question because then we can all go through it together! So if you can put up A at the same time there will be some major rep points for you, i'm sure.
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kvohra
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#1107
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#1107
(Original post by Robmarkey)
Sorry I've been working all weekend, give me 20minutes and the paper will be up.(only section B)
Hey man, would it be possible to just photograph the pages and upload them? It would be much quicker than having to write out the entire paper. I really need to know how I have done and prioritise either maths or physics
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MisterE1
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#1108
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#1108
(Original post by Robmarkey)
Sorry I've been working all weekend, give me 20minutes and the paper will be up.(only section B)
Hi, without meaning to be rude, but it has been 4 hours.. So if you could please find the time to upload the paper that'd be great, it will tell me if I need to do more physics revision or maths revision for an A*. Of course if you are busy revising yourself I don't want to disrupt you!

Thanks!
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Pgpacker
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#1109
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#1109
Personally, I think he's just ****ing with us haha
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Hog Dog
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#1110
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#1110
(Original post by Pgpacker)
Personally, I think he's just ****ing with us haha
Same here. :ditto:

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MisterE1
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#1111
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#1111
(Original post by Hog Dog)
Same here. :ditto:

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Apparently so!


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cooldudeman
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#1112
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#1112
(Original post by Robmarkey)
Sorry I've been working all weekend, give me 20minutes and the paper will be up.(only section B)
Bull****

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fizzbizz
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#1113
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#1113
(Original post by Robmarkey)
Sorry I've been working all weekend, give me 20minutes and the paper will be up.(only section B)
Everyone neg this troll
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kvohra
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#1114
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#1114
(Original post by Robmarkey)
Sorry I've been working all weekend, give me 20minutes and the paper will be up.(only section B)
Why are you doing this to us? I need to know what lies in my future and you are just stringing us along with the false pretence that you actually have the paper. Do you really have so much pride that you cannot admit you don't have the paper? Also when you say you have been busy all weekend, and if you do have the paper all it takes is a few snapshots on your smartphone and hit the button upload, 2-3 mins tops. Have you really had such a horribly packed weekend that you do not have the time to do this?
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cooldudeman
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#1115
Can everyone at least try to ask their teachers if they have it. I will too.

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MisterE1
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#1116
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#1116
(Original post by kvohra)
Why are you doing this to us? I need to know what lies in my future and you are just stringing us along with the false pretence that you actually have the paper. Do you really have so much pride that you cannot admit you don't have the paper? Also when you say you have been busy all weekend, and if you do have the paper all it takes is a few snapshots on your smartphone and hit the button upload, 2-3 mins tops. Have you really had such a horribly packed weekend that you do not have the time to do this?
Well said, can I ask what you want to do at uni?


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ehtisham_1
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#1117
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#1117
I've got the paper but I will upload it on Thursday after exam.

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cooldudeman
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#1118
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#1118
(Original post by ehtisham_1)
I've got the paper but I will upload it on Thursday after exam.

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Dude why not now. Just take pics. Only takes 10 minutes. some of us are not motivated for the next exam unless we see our previous. We are all dying here!! Uploaddddd

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MisterE1
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#1119
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#1119
(Original post by ehtisham_1)
I've got the paper but I will upload it on Thursday after exam.

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Yeah because ill remember what I wrote then. And it will help a lot in deciding which exams need prioritising, oh wait we would have sat them...

Why say you'll do something if you have no intention of doing it.


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kingm
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#1120
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#1120
(Original post by ehtisham_1)
I've got the paper but I will upload it on Thursday after exam.

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You can't be serious bro! Get a move on and get it up....10mins is all it takes and in return you'll get a lifetime of gratitude from fellow (desperate) TSRians.

Seriously man, there are only so many ways a person can beg before they lose all dignity...
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