OCR Physics Unit 2 - G482 - (June Exams Preparation) Watch

Camellama
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#621
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#621
(Original post by dream996)
GOD I screwed up! I'm absolutely broken down right now! (someone cheer me up!) that paper was suppose to be 'relatively easy!' yet I ran out of time! grrrr!
If it makes you feel better, I accidently missed out the last two pages as they were stuck together, so I only had 5 minutes to do them. Definitely failed.
:mad:
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JG1027
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#622
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#622
(Original post by leahcee)
I put the arrows the opposite direction that they were travelling, if that makes sense? I remember doing it in class once and everyone got it wrong, so we kinda learnt.
same
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MelissaW_xo
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#623
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#623
(Original post by J10)
Also, for the last question I put infrared first, with UV second.
What did the graph you had to draw look like?
Mine had a period of 0.2s, and I draw 2 full waves, 0-0.2, 0.2-0.4. Also has 0.010, 0.020, 0.030 on the sides (and the negatives of these values on the y-axis)
I got the same as you! Took me a long time to work out though..
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bradley-tracey
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#624
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#624
if anyone could post a link of the paper i will upload module answers.
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JamesJJT
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#625
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#625
Are we allowed to discuss this exam yet? Or does the time limit only apply to Edexcel?


EDIT: It's only Edexcel. Learn to read James.
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Georgehigginson
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#626
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#626
(Original post by JamesJJT)
Are we allowed to discuss this exam yet? Or does the time limit only apply to Edexcel?


EDIT: It's only Edexcel. Learn to read James.
we're not allowed and anyone who posts on here will be disqualified

EDIT: Ah you noticed ahaah
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MelissaW_xo
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#627
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#627
Really annoyed now because for the 90degrees difference one I put Y and Z when they are 180 just wasn't thinking...
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JG1027
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#628
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#628
was the graph a sine graph? :|
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MelissaW_xo
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#629
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#629
(Original post by Georgehigginson)
we're not allowed and anyone who posts on here will be disqualified
That's not true - OCR exams are only taken in the UK so you can discuss straight after
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Hannahm1995
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#630
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#630
(Original post by Legal drugdealer)
Disgusting paper!
Yep! Horrid


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Hannahm1995
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#631
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#631
(Original post by Gcayte)
Im thinking it'll be as low as 63ish for an A.
As a year 13, that paper was harder than the A2 stuff!
Totally agree! A2 seems to be so much easier than this paper?!


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Georgehigginson
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#632
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#632
(Original post by JG1027)
was the graph a sine graph? :|
think i did cos, it started at max amplitude didn't it
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Georgehigginson
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#633
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#633
(Original post by Georgehigginson)
we're not allowed and anyone who posts on here will be disqualified

EDIT: Ah you noticed ahaah
Stop neg rating me, I was only joking
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Hannahm1995
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#634
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#634
(Original post by seajamiet)
What did you guys get for efficiency, i got 80%
I got 85% defiantly wrong


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Gcayte
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#635
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#635
(Original post by Hannahm1995)
Totally agree! A2 seems to be so much easier than this paper?!


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Yeah! I'm really worried now though that Unit 5 will be awful
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J10
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#636
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#636
What do people think gradeboundaries willl be for an A (and for 130, 140 and 150 UMS)?
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Gcayte
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#637
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#637
(Original post by Law-Hopeful)
I got total input power as 2880W (P=IV = 120x24 = 2880W), got the power lost as 720W, so got the percentage efficiency as 75%. But apparently it was 80%?
I think you're supposed to use 30V instead of 24V
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JamesJJT
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#638
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#638
There were 2 questions that really threw me: The Electric Meter for the LDR and using the Double slit instead of two identical light sources. Took me a while to think those through.


For the wave question with WXYZ I put W at max speed, X at rest and W and X for the phase difference of 90 degrees.


Could someone enlighten me as to what happens to the speed of W oscillating when the frequency is doubled?
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booooomblastruin
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#639
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#639
(Original post by Georgehigginson)
think i did cos, it started at max amplitude didn't it
Yeah, I thought that too. It said to do it for point X, which was at a maxima on the wave.
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Gotzz
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#640
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#640
(Original post by leahcee)
I got 0.3 for the resistivity
Me too
(Original post by 3chainz)
yes same!!! i put UV and infrared... well infrared first then UV.... u??
Me too
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