# AQA Physics Unit 1 PHYA1 20th May 2014 OFFICIALWatch

4 years ago
#461
(Original post by Dasin)
I dont remember the equation, what was it?
I think it was a K+ --> pion+ and X
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4 years ago
#462
(Original post by Dasin)
should be fine, depends on what you said about it though
Thanks
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4 years ago
#463
For question 5, I used P=IV instead of P=I^2R. How many would this cost?
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4 years ago
#464
(Original post by Avor)
For the question where you had to calculate the energy in eV, does anyone remember the wavelength that they gave us? It was in nanometers.
245??
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4 years ago
#465
(Original post by AreiMo1997)
had 10 mins to do whole of electricity , ****ed it up , results day >parents get mad > cry > suicide> retake year
GGG **** YOU ELECTRICITY YOU WAAAAAANKER
Particle was ok , QUatumn was ok ( no photoelectic lololol *****) and electicity was stupid as ****

You'll have a job retaking the year if you commit suicide mate
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4 years ago
#466
to put it bluntly, no, because neutron is wrong as baryon number would not be conserved, unfortunately i doubt you will receive credit.
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4 years ago
#467
(Original post by Potatosandwich98)
On one part i swear it said what is conserved and what is not conserved? I put baryon number and strangeness
Yes. And that is correct aswell.
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4 years ago
#468
(Original post by Potatosandwich98)
On one part i swear it said what is conserved and what is not conserved? I put baryon number and strangeness
Baryon number and strangeness is correct. I'm 100% sure. However my electricity teacher was a complete gimp so that second section ****ed me up
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4 years ago
#469
(Original post by zed963)
For question 5, I used P=IV instead of P=I^2R. How many would this cost?
That first part was 3 marks, I imagine 1 mark was for obtaining the correct value of power from the graph, and the other 2 would be the correct calculation. You'd lose those 2 marks, and then get follow-through for the rest of the question if the values were correct for your value of current.
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4 years ago
#470
Didnt a question ask
what is conserved?
what is not conserved?
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4 years ago
#471
(Original post by GrammarSkoolBoi)
im not 100% but it hink the internal resistance was exactly 3 with no rounding error, however the markscheme will no doubt allow for rounding error however i cant say how large the range of accepted values will be. possibly 2.8 to 3.2
No but what if i used a different value in the first part of the question and then while doing the rest of the questions, would i still get a ecf mark because although i initially messed up, but i continued on correctly?
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4 years ago
#472
Can we take a moment to appreciate all the fluorescent tube marks available? That was a beautiful question.
4
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4 years ago
#473
What did everyone get as their value of the eV?
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4 years ago
#474
hmmm I must not be neutrino then, however I don't remember what I ticked, I remember crossing something out, what were the choices ?
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4 years ago
#475
(Original post by Jamesgault)
245??

254...
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4 years ago
#476
(Original post by Avor)
What did everyone get as their value of the eV?

Something like 4.89 ev or 4.9, roundabouts that much, you?
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4 years ago
#477
The beta decay one was definitely an (electron) anti neutrino as lepton number had to equal zero & it was electromagnetic interaction with virtual photon not weak interaction?
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4 years ago
#478
Can't wait for Unit two, Mechanical physics will easily redeem whatever I lost in this paper. Peace.
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Thread starter 4 years ago
#479
(Original post by deadmau_5)
Something like 4.89 ev or 4.9, roundabouts that much, you?
I got 5
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4 years ago
#480
(Original post by deadmau_5)
No but what if i used a different value in the first part of the question and then while doing the rest of the questions, would i still get a ecf mark because although i initially messed up, but i continued on correctly?
yeah i knew what you meant i was just making a general point. But it really depends on AQA for some questions they do give ecf marks, but in some they dont, you'll just have to wait and see
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