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# EDEXCEL PHYSICS UNIT 6 &gt; HOW WAS IT? watch

1. (Original post by riks2004)
temp change was 3.62K or degrees C didnt matter which 1 cos 1 degree C = 1 K but i put K cos the specific heat capacity had k in.

same here

and did you put temperature measured would be lower than calculated temperature?
2. What did everyone put for the voltage of the thermocouple?
3. (Original post by roochis)
I've got two more to go.. and then i'll be one happy birdy!
i have 2 more and then 2 aea's but one is french which i dont need a grade in for offers! so im not worrying too much about it! concentrate on P5 for tomorrow x
4. we did?

For the spectrum speed thingy i didnt know whether to take away 20 or add it on. Seems i made the wrong choice, how many marks would i lose for that?

Also for teh lead shot one i didnt times by 60, how many marks will i lose for that?
5. (Original post by -joanne-)
i have 2 more and then 2 aea's but one is french which i dont need a grade in for offers! so im not worrying too much about it! concentrate on P5 for tomorrow x
Ahh.. one of mine is french too.. but like you i don't need a grade in it.. so i'm not concentrating on it at all!
6. i got 0.52v for the thermocouple
7. (Original post by sequence123)
i got 0.52v for the thermocouple
i didn't get that... i got somethign a lot smaller... i think mine was ^10-4
8. actually i meant i got 0.52v for the the voltage accross the resistor
9. (Original post by sequence123)
actually i meant i got 0.52v for the the voltage accross the resistor
Yeah.. same thing... i got something small... you had to do ratios for that question no? what were the two resistor vfalues? one was 25ohms.. and the other was...?
10. Maybe some clever people can compile a theoretical mark schem with the marks as well?
11. One was 47, the other 25

so i did 25/72 times 1.5
12. (Original post by sequence123)
One was 47, the other 25

so i did 25/72 times 1.5
It was 72Kohms!
13. no it wasnt 47 it was 47k (ohms)
14. (Original post by Economist)
It was 1.36x10^7m/s using 440nm as the original and 20nm as the change
I did the same
15. (Original post by roochis)
It was 72Kohms!

yeh it was definetly some number with kilo ohms
16. also, it was meant to be:

1.5*25/(72K + 25)

No?
17. these answers that every1 got such as 15^6 amd 8^7....these are rounded to 1 sig. fig. rite?????

cuz i got liet 14.7^6 and 7.77^7 or something i remeber geting the same powers...

also what did evrey1 get for the pd across the resistor....i got a really small value like '^-3' of something ???????
18. that paper had some dodgy questions... i did some of them really good...some i had no idea, my mind went blank..like the energy for the lead shots... but i did put down the formula...might get 1 mark for it atleast... the next one after...i hope it was less..cos theres heat loss...i put a bit more detail but...neway...what was it??? its less yeah!?
19. (Original post by roochis)
also, it was meant to be:

1.5*25/(72K + 25)

No?
yep except it was 47 kilo ohms
20. (Original post by roochis)
also, it was meant to be:

1.5*25/(72K + 25)

No?
yeh im 100% on that

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