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# ANSWERS: OCR Physics B(Advancing Physics) G491~ 20th May 2014~ AS Physics Watch

• View Poll Results: Opinion of the paper
Hard
67.07%
Medium
10.98%
Easy
3.66%
>55
7.32%
50-45
14.63%
44-49
14.63%
40-43
10.98%
35-39
15.85%
30-34
9.76%
25-29
3.66%
20-24
4.88%
<24
2.44%
I managed to finish all of the paper and check
13.41%
I managed to finish the paper but didn't check
26.83%
I missed off a few of the questions
37.80%
I missed >half of the questions
3.66%

1. Coursework - 60 UMS, 30 marks, 20%

G491 - 90 UMS, 60 marks, 30%

G492 - 150 UMS, 100 marks, 50%

That is how it stacks up
2. (Original post by Mutleybm1996)
Round upwards even if it's 7.45... Just round up to 8 as it's the MINIMUM amount of bits and log(Vt/Vn) gives you the exact number of bits.

As for bandwidth it needs to be >> the maximum frequency(assume that 1 bit is carried on one wave and the Hz is the number of waves per second)

Posted from TSR Mobile
Thanks, so essentially the transmission rate of bits per second is equal to the bandwidth of waves per second
3. Panicing so much for this exam. Any quick tips/advice? Do you guys have any summary sheets on everything you need to know for this exam? I'm screwed, my memory is alkl over the place.
4. I really hope we have a nice question paper tomorrow - preferably questions I've revised.
5. (Original post by Robbo54)
I really hope we have a nice question paper tomorrow - preferably questions I've revised.
Probably won't be

Posted from TSR Mobile
6. does anyone else find the paper time constrained?
7. (Original post by MasterOfTheSwag)
Coursework - 60 UMS, 30 marks, 20%

G491 - 90 UMS, 60 marks, 30%

G492 - 150 UMS, 100 marks, 50%

That is how it stacks up
Ahh totally forgot about UMS. Thanks.

(Original post by shloke123)
Thanks, so essentially the transmission rate of bits per second is equal to the bandwidth of waves per second

Yes. But the textbook says that bandwidth is bit rate ÷ 2. Confusing.
8. Tomorrow Morning will be a bundle of joy.
I would try and have a brief look over the G492 Handout as both exams usually have something to do with them. So Batteries, Internal Resistance, And so on

For me it's always that first question with the SI units. Everything else i can sort of do to a certain degree but its them darn multiple choice questions.

However Using flash cards i now know them all! :P
9. (Original post by Malkation)
Tomorrow Morning will be a bundle of joy.
I would try and have a brief look over the G492 Handout as both exams usually have something to do with them. So Batteries, Internal Resistance, And so on

For me it's always that first question with the SI units. Everything else i can sort of do to a certain degree but its them darn multiple choice questions.

However Using flash cards i now know them all! :P
Both exams have something to do with it?

Posted from TSR Mobile
10. When calulating max and min gradients using error bars (eg for uncertainty in young modulus), must the max and min lines pass through ALL error bars? thanks
11. no just g492
12. Goodluck tomorrow everyone! It'll be okay if we get a nice paper xD
13. Is response time the time taken for the sensor's reading to level off, or just to begin responding?
14. (Original post by shloke123)
does anyone else find the paper time constrained?
perfectly fine for me
15. Anyone know where one can obtain the G492 Advance Notice article online? I think I have misplaced mine.
16. (Original post by Torto)
Anyone know where one can obtain the G492 Advance Notice article online? I think I have misplaced mine.
http://www.ocr.org.uk/Images/165500-...-june-2014.pdf
17. This should be fun with no revision, good luck everyone, I think we'll need it...
18. Good luck! I've been all over the place in past papers - 49 in some, 34 in others.... Just comes down to the paper
19. Good luck everyone! Let's do this!
20. Hardest exam ever.

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