OCR Physics A G485 - Frontiers of Physics - 18th June 2015 Watch

L'Evil Fish
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#1621
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#1621
(Original post by Elcor)
0.051m
1340 Bq
1.8x10^-3 A
2.0x10^7 for something
4.7x10^-15 for something
7.92x10^6 for something
592 rate of temp
1st ratio 9.0x10^-15
2nd 1.06x10^7
I got 13.4Bq

The others I'll need to see context

Same ratios though
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Elcor
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#1622
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#1622
(Original post by HMusa)
Anybody else get 50ly for the parsec question?
Think I got like 560 ish

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Nuvertion
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#1623
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#1623
(Original post by matthew6665)
what the **** are you smoking ? 80% of people that i know did this exam said it was well harder than usual. Last year's was much easier...
Don't base grade boundaries on people from TSR , cause most people here are like A* candidates lol. I am sure that paper will not be more than 72 for an A.

LOL QUOTED THE WRONG PERSON. SORRY. BUT ANYWAY...
I'm certainly not an A* candidate and nor are the other people in my class. Most thought it was an average paper, I would go as far to say fairly straightforward and easy. There weren't any trick or outside-box-thinking questions. If you understood the content then this should've been a breeze.
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SH0405
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#1624
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#1624
(Original post by Elcor)
Why would you even do a grade boundary prediction like it's totally ambiguous for you and depends on the entire student cohort (which TSR does not represent)
Sorry.
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Elcor
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#1625
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#1625
(Original post by L'Evil Fish)
I got 13.4Bq

The others I'll need to see context

Same ratios though
What would make me out by 100?

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BrokenS0ulz
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#1626
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#1626
(Original post by Elcor)
Think I got like 560 ish

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Same
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jcwh97
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#1627
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#1627
(Original post by Elcor)
What would make me out by 100?

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U had to multiply by 0.00012 not 0.012. I made that mistake at first
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gothmog827
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#1628
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#1628
have no idea what these are for but:
6.54x10^-4
8.29x10^-10
1060
592 rate of change of temp
7.92x10^5
4.71x10^-15
1.97x10^7
64% intensity
1.66x10^-3 time constant
1.16x10^-3A for switch
553
9.02x10^-15
1.06x10^7
1014, 4.53
1.41x10^10 y
3.6x10^-8N
5.06x10^-2m
0.0971A
0.0625 ratio
13.4Bq
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MrChemKid
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#1629
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#1629
Force on particle- 3.2E-15

ratio 16

activity of banana 13.4

time constant 1.66E-3

current 2E-3

radius of alpha particle 4.7E-15

temp - 592

wavelngth 8.3E-12

64%

density ratio - 9E-15

light years 552

age of earth 1.4E10
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L'Evil Fish
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#1630
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#1630
(Original post by Elcor)
What would make me out by 100?

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Probably not diving 0.0012% by 100
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Leechayy
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#1631
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#1631
(Original post by Elcor)
No it's .99 because that's the amount that goes into heat.

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Yeah, lol I thought you was talking about that part before:mmm:

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gothmog827
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#1632
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#1632
(Original post by Elcor)
What would make me out by 100?

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percentage is divided by 100
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Elcor
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#1633
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#1633
(Original post by L'Evil Fish)
Probably not diving 0.0012% by 100
Yeah that's it. Hopefully just 1 mark there.

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matthew6665
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#1634
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#1634
(Original post by Nuvertion)
I'm certainly not an A* candidate and nor are the other people in my class. Most thought it was an average paper, I would go as far to say fairly straightforward and easy. There weren't any trick or outside-box-thinking questions. If you understood the content then this should've been a breeze.
Yeah but it's still how people across the country did. And most people struggle with ratios and there was like 4 ratio questions. Also Q1 the 2 calculations to find Force and displacement will trick a lot of people.
And people who didn't resit G482 would've stuggled with some parts as well cause they probably forgot them from g482
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gothmog827
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#1635
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#1635
can someone run me through the current for the capacitor. I did q=vc = 1.4*6.6x10-6 divided by time which was 1/120 and ended up with 1.16x10^-3
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username1920701
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#1636
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#1636
Was an Ok exam, even a "nice" exam compared to that piece of **** G484, i wouldn't use that to clean the brown stuff off my bum
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jcwh97
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#1637
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#1637
(Original post by gothmog827)
can someone run me through the current for the capacitor. I did q=vc = 1.4*6.6x10-6 divided by time which was 1/120 and ended up with 1.16x10^-3
I got that answer to but I have little confidence in it LOL
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ooftar
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#1638
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#1638
Will there be an unnofficial mark scheme for this paper??


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gothmog827
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#1639
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#1639
dammit I did 1/ratio for the ke one. easy marks lost
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kateyl
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#1640
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#1640
(Original post by gothmog827)
have no idea what these are for but:
6.54x10^-4
8.29x10^-10
1060
592 rate of change of temp
7.92x10^5
4.71x10^-15
1.97x10^7
64% intensity
1.66x10^-3 time constant
1.16x10^-3A for switch
553
9.02x10^-15
1.06x10^7
1014, 4.53
1.41x10^10 y
3.6x10^-8N
5.06x10^-2m
0.0971A
0.0625 ratio
13.4Bq
How did you get to the answer 64% intensity?
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