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# Edexcel Physics Unit 2 "Physics at work" June 2013 Watch

• View Poll Results: The last question - Does resistance increase or decrease?
It increases ( using V=IR or some other method)
70.73%
It decreases using the 'lattice vibrations' theory
29.27%

1. (Original post by x0x)
When is results day?
15th august I think

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2. (Original post by x0x)
So what is the answer to the last question? does it increase or decrease? or does it stay the same
resistance decrease
3. why isnt anyone discussing the polarisation question .?
4. (Original post by Mimi85)
why isnt anyone discussing the polarisation question .?
It was straightforward in my opinion but I might have got it all wrong :P
the definition was alright but there were 3 marks so who knows what else they wanted apart from stating that the oscillations are in only one plane (1) perpendicular to the direction of propagation (2)
I included a diagram and stated that only transverse waves can be plane polarized but I have a feeling I missed what they wanted
135-45=90 so each filter lets light whose oscillation is in a particular plane (something along those lines) and the difference is 90
Tilting your head changes the angle of polarization and the difference is no longer 90 degrees so each filter is able to let in light that wasn't meant to be let in
I don't remember the other questions, sorry :P
5. (Original post by x0x)
It was straightforward in my opinion but I might have got it all wrong :P
the definition was alright but there were 3 marks so who knows what else they wanted apart from stating that the oscillations are in only one plane (1) perpendicular to the direction of propagation (2)
I included a diagram and stated that only transverse waves can be plane polarized but I have a feeling I missed what they wanted
135-45=90 so each filter lets light whose oscillation is in a particular plane (something along those lines) and the difference is 90
Tilting your head changes the angle of polarization and the difference is no longer 90 degrees so each filter is able to let in light that wasn't meant to be let in
I don't remember the other questions, sorry :P
lol ur answers sound so right , i dont think im getting much marks cuz i didnt write the main points im so scared abt getting a low mark , i even screwed up in the electricity questions .. in the 3d glasses question , i jst wrote that light is unpolarised so it gets polarised bla bla .. and for the tilting ur head question i wrote that if u more , ur
6. (Original post by x0x)
It was straightforward in my opinion but I might have got it all wrong :P
the definition was alright but there were 3 marks so who knows what else they wanted apart from stating that the oscillations are in only one plane (1) perpendicular to the direction of propagation (2)
I included a diagram and stated that only transverse waves can be plane polarized but I have a feeling I missed what they wanted
135-45=90 so each filter lets light whose oscillation is in a particular plane (something along those lines) and the difference is 90
Tilting your head changes the angle of polarization and the difference is no longer 90 degrees so each filter is able to let in light that wasn't meant to be let in
I don't remember the other questions, sorry :P
sorry ill continue here , so if u move ur head , the light is once again unpolarised and and is has ton be in the angle "the right angle " bla bla , im so scared to get a low mark
7. (Original post by Mimi85)
sorry ill continue here , so if u move ur head , the light is once again unpolarised and and is has ton be in the angle "the right angle " bla bla , im so scared to get a low mark
Don't worry. I don't think i'll get full marks in this question because the mark scheme is likely to be picky. I hope you get the grade you want the last question is bound to lower the grade boundaries :P I answered it badly to say the least :P
8. what 6 markers came up in march this year?
9. (Original post by 789tom789)
what 6 markers came up in march this year?
There were no 6 markers but there were 5 markers. Don't worry, the questions weren't as crazy as January's (unit 1)
10. Does anyone know the time of the gcse edexcel p2 exam 18/6/13?
all I know is that its in the morning
11. Why can't I access results plus direct registration page?!??
12. (Original post by Munchee)
Why can't I access results plus direct registration page?!??
why would you register now?
13. (Original post by x0x)
why would you register now?
I know its a bit late but what did you put for the voltmeter with low resistance question
14. (Original post by x0x)
why would you register now?
Surely it says to do so on or before today.....! Anyway I think it's too much traffic..... That's why it never does load
15. Guys apparently the answer to the last question is that resistance decreases ( it should be answered using the lattice vibrations theory ) so I am wrong

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16. (Original post by x0x)
Guys apparently the answer to the last question is that resistance decreases ( it should be answered using the lattice vibrations theory ) so I am wrong

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What the ****.
That question was soo vague and flawed and ambiguous......

I could understand the question in 3 ways
..so.I devided the page and wrote all 3 combinations stating my assumptions.......
17. (Original post by TheKingOfTSR)
What the ****.
That question was soo vague and flawed and ambiguous......

I could understand the question in 3 ways
..so.I devided the page and wrote all 3 combinations stating my assumptions.......
Haha l share the same view :P
Do you have any idea about the cap mark? i.e. mark at which you get full ums?
i reckon 74? how about you?
18. (Original post by x0x)
Haha l share the same view :P
Do you have any idea about the cap mark? i.e. mark at which you get full ums?
i reckon 74? how about you?
woaah dude watch where u are going unit 2 full ums never gone above 66-68 so im thinking 68 or something assuming an A is 58 which never happened its always lower
19. (Original post by x0x)
Haha l share the same view :P
Do you have any idea about the cap mark? i.e. mark at which you get full ums?
i reckon 74? how about you?
For unit 1
I'll say 65 for full ums.
54 for A

For unit 2:
I'll say 70 for full sums
59 for A
20. (Original post by TheKingOfTSR)
For unit 1
I'll say 65 for full ums.
54 for A

For unit 2:
I'll say 70 for full sums
59 for A
Yeah sounds right to me
Thank god I didn't have to sit unit one again, that paper turned me into a pessimistic student

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