AQA Physics PHYA5 - Thursday 18th June 2015 [Exam Discussion Thread]

Original post by RemainSilent

Are the official grade boundaries results before results day? (if so thats nerve racking)

Yeah, the exam boards reveal them a week before the results day i think

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Reply 3783

xuyixuanpbs

If I didn't mention plot a P-T or V-T graph or extrapolate the line in the 6 marker of section A at all, will I lose all marks? God I am so scared.

Reply 3784

vxl429

1

Original post by elsq

Indeed I did

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Ace. One last thing; did you just do (420/60) x (area of p-V loop) ?

Reply 3785

Emifrog

so what actually was the last q in applied then????

Original post by ubisoft

That moment when the invigilator picks up your paper and you see the last page left empty. lol I wouldn't wish that on my worst enemy. Praying we get the same boundaries as June 2014 but unlikely

Applied bro, and yeah pm me so I know you've posted them here

Reply 3786

Emifrog

as far as i remember i got all of those i think, was 7.64x10^7 or whatever it was the last q??

Original post by ubisoft

Do you remember the questions too?

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Reply 3787

xela238

3

Did anybody else get -9.2x10^-2 for the magnitude in Astro? It seems to only be me...

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Reply 3788

CD223

OP

Original post by xela238

Did anybody else get -9.2x10^-2 for the magnitude in Astro? It seems to only be me...

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There was a range where you read off of the graph. Most people read the range 1.980-1.983. When you use these numbers as the apparent magnitude in the formula with d=25, you get a range of results.

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Reply 3789

_Caz_

Original post by xuyixuanpbs

If I didn't mention plot a P-T or V-T graph or extrapolate the line in the 6 marker of section A at all, will I lose all marks? God I am so scared.

You will probably lose a few marks. Don't worry though it won't be all of them :smile:

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Reply 3790

Original post by xuyixuanpbs

If I didn't mention plot a P-T or V-T graph or extrapolate the line in the 6 marker of section A at all, will I lose all marks? God I am so scared.

What did you write for that question?

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Reply 3791

Sbarron

3

Original post by Mehrdad jafari

Yeah, the exam boards reveal them a week before the results day i think

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Oh my where would you go to find these??

Reply 3792

Reverse Swing

2

Original post by Sbarron

Oh my where would you go to find these??

I though it was released on midnight results day...they can be found on their websites but they won't always update it on time I think.

Reply 3793

Original post by Sbarron

Oh my where would you go to find these??

On here:
http://www.aqa.org.uk/exams-administration/about-results/grade-boundaries

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Reply 3794

Original post by Reverse Swing

I though it was released on midnight results day...they can be found on their websites but they won't always update it on time I think.

Yeah, i think that should be

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Reply 3795

CD223

OP

Original post by Mehrdad jafari

Yeah, i think that should be

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AQA, OCR and Edexcel do theirs the day before. WJEC is different each year - sometimes not updating until actual results day.

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Reply 3796

Vincent Song

2

For those guys who did the applied one, do you think the paper this year was harder than the previous years or easier? I messed it up so I wanna know what kind of grade I can get. Thank you very much.

Reply 3797

xuyixuanpbs

Yeah right I think I wrote sth stupid in physics exam, a 6 marks question asking how to determine absolute zero. I never revise it as it only occupies such a tiny space in the book and I never pay attention to it.

I put down use a kelvin thermometer and a Celsius thermometer to measure the temperature of a fixed amount of gas respectively.... then work out the difference....the subtract the difference from 0......

Bull****. If a kelvin thermometer is based on the concept of absolute zero...then what is the point to use it to determine absolute zero... I rethink after the exam and feel the answer is stupid...

I did also put down absolute zero is when the mean kinetic energy of all gas molecules becomes zero so does their root mean square speed is zero so it's actually impossible. And the experiment should be carried at constant pressure with a fixed mad and volume of gas. Take repeats and average. Honestly how many marks will I lose for this question I feel so regretful and scared :frown:

Original post by Mehrdad jafari

What did you write for that question?

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Reply 3798

CD223

OP