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OCR PHYSICS B G491~ 19th May 2015 AM ~ AS Physics

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Reply 220
Avatar for Wolfea
Wolfea
2
Original post by jpetersgill
More like 6. Something ..?


Posted from TSR Mobile


Yeah, got 6.6
Original post by jpetersgill
More like 6. Something ..?


Posted from TSR Mobile


6.04 or around that
Has anyone been able to get a spare copy of the paper? If so could you post it online? I know that someone posted the g491 for 2014 May so if you could it would be much appreciated.
Original post by jamesjmillar
6.04 or around that


6.4*
Can someone tell me how they are getting around 6
Original post by CancerousProblem
I got 0.67

edit; i meant 6.7 mistype


Isn't it 150?

3000/20=150
So presumably it has 150x more resistance which makes sense

Posted from TSR Mobile
(edited 8 years ago)
Reply 226
Avatar for Mozeze
Mozeze
Yeah I got the ratio as 150:1 so p3000 is 150 times larger
what did you get for the question about steel beams?
Reply 228
Avatar for Wolfea
Wolfea
2
Original post by Mutleybm1996
Isn't it 150?

3000/20=150
So presumably it has 150x more resistance which makes sense

Posted from TSR Mobile


No, unfortunately those are the temperatures, not the resistivities.
Reply 229
Avatar for smerkz
smerkz
1
Original post by Mutleybm1996
Isn't it 150?

3000/20=150
So presumably it has 150x more resistance which makes sense

Posted from TSR Mobile


No, 20 degrees was the minimum point on the graph which you used for resistance in the first part. 3000 degrees is the maximum because the p.d. was 6V, so working out this resistivity gave a ratio of ~6.something
Reply 230
Avatar for Wolfea
Wolfea
2
Original post by xXn00bkiller69Xx
what did you get for the question about steel beams?



No, jet fuel unfortunately can't melt them.
Original post by Wolfea
No, jet fuel unfortunately can't melt them.


phew good I got the same, what about the one asking if you believed that 9/11 was an inside job?
what question about steel rods?! :O
Original post by xXn00bkiller69Xx
phew good I got the same, what about the one asking if you believed that 9/11 was an inside job?


wait sorry guys, I thought this thread was OCR Psychology
does anyone know how the graph of the last question about scanning tunnelling microscoper looked like
Original post by lauren_2
what question about steel rods?! :O


You had to calculate whether or not the jet fuel would be able to melt the steel beams. It was on the back.
(edited 8 years ago)
Original post by lauren_2
what question about steel rods?! :O


it was on the back page
Reply 237
Avatar for ss334
ss334
There was no question on jet fuel
Reply 238
Avatar for Wolfea
Wolfea
2
Original post by Zain.chishty
does anyone know how the graph of the last question about scanning tunnelling microscoper looked like


Mine just had three peaks, for the 3 atoms...up to 260pA I believe
Reply 239
Avatar for MJS107
MJS107
7
Original post by jack0997
0.018m?


Yes...thank goodness. Would you get a mark for stating your assumption?

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