OCR Physics A - G484 The Newtonian World Watch

munaaf
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#181
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#181
(Original post by hoddy)
Not sure If I remember this one correctly, but for the pressure in the ball at 0C. I got 2.45 x 10^5 Pa, this ring a bell with anyone?
me too
aint had a chance to read the thread yet, but hows peoples reactions.
Honestly felt alot easier than the other 2 during exam, just hope I didn't make any petty mistakes.
The only bit that got me was the last question with 4 masses I wasnt sure if I had to divide the answer by 4, or minus 273 (but surely change in temp is irrelevant of that so i didnt od that ) Got like 566 or somthing sounded WELL wrong. And the one right after about 2 points why its not right, could only think of one.
as long as I didnt make mistakes elsewhere it went pretty solid
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KeineHeldenMehr
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#182
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(Original post by Kd3239)
did u use 1 day or change it to seconds?
change it to seconds, it's given in the formulae booklet.
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Kd3239
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#183
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#183
yh so how did remarkq get difference answer from mine?
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munaaf
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#184
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#184
I got 2.16*10^7 for radius I used keplers law :\ couldnt see how any other would work *doh*
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Kd3239
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#185
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#185
(Original post by KeineHeldenMehr)
change it to seconds, it's given in the formulae booklet.
what did you get for the radius?
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Kd3239
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#186
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#186
i think i know why i got different answer. i forgot to square T. how many marks would i lose?
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zoolander0110
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#187
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#187
(Original post by Remarqable M)
14 exams done and finish now i can relax and enjoy the world cup with no worries
14? my GOD! you must have really fuc*** up last year.
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munaaf
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#188
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#188
OHHHH Nooooooooooooo
I did T as for a year!!!
i think thats why? damnit fml
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Remarqable M
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#189
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#189
can someone remember what the mass of the satellite was?
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Remarqable M
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#190
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#190
(Original post by munaaf)
OHHHH Nooooooooooooo
I did T as for a year!!!
i think thats why? damnit fml
lol u had to change it to seconds 1 day=3600 x 24 secs
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Kd3239
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#191
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#191
I cant believe it. in january i made a stupid mistake (not seeing time in ms) and i this time forgot to square T. Dont you hate it when you made those silly mistakes and they can cost you dearly.
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Kd3239
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#192
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#192
they didnt give the mass of the satellite but the earth. i think it was 6x10^24 kg
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munaaf
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#193
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#193
(Original post by Remarqable M)
lol u had to change it to seconds 1 day=3600 x 24 secs
yeah LOL i times that by 365, not a clue why. just did not read,assumed loool
hoping i get method and ecf lol
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DanPok
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#194
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#194
(Original post by Kd3239)
I cant believe it. in january i made a stupid mistake (not seeing time in ms) and i this time forgot to square T. Dont you hate it when you made those silly mistakes and they can cost you dearly.
you should lose only 1 mark hopefully, 2 if the examiner is harsh, i forgot to square the T aswell, foolish
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munaaf
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#195
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#195
(Original post by Kd3239)
they didnt give the mass of the satellite but the earth. i think it was 6x10^24 kg
this is right
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Remarqable M
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#196
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#196
(Original post by zoolander0110)
14? my GOD! you must have really fuc*** up last year.
the coursework let me down lol so i had to retake nearly all my units to push my grades from a C to a B. For maths i retook some just for fun to see if i can improve my grade any further lol:p:
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Remarqable M
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#197
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#197
(Original post by munaaf)
this is right
ok i just did the calculation and i remember i got this

42212801.51 so 4.22 x 10^7:p:

and don't forget you have to use cube root not square rooot, so maybe this explains why some people got different answer.
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zoolander0110
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#198
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#198
has any one got the paper to scan up?
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Kd3239
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#199
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#199
the boundary will be high then since most people say this is a nice paper. 48-50 for an A perhaps?
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munaaf
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#200
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#200
Yeah everyone i know found it easy too, im just hoping the boundaries are around 46, because I think (hopefully lol) the worst I can get is about 46

I did cube root it remarqable M xD
I also felt I was rushed for time when I did jan 10 the other day I finished it in 35 mins, but this I finished with only 10 mins spare.
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