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AQA Physics Unit 1 PHYA1 20th May 2013

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Reply 1380

That_Clever_Guy

Original post by ccashman

Hahaa ahh I bet it was. I'll just pray they give me the mark

Yeh they should if your answer is only 0.3W out because of rounding you should get the marks :smile:

they probably have a range of values

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Reply 1381

StalkeR47

Original post by g.k.galloway

Is there a thread for unit 2 yet?

YES! http://www.thestudentroom.co.uk/showthread.php?t=2357766&p=42720322#post42720322 :biggrin:

Reply 1382

Khenir

Original post by benroxo

I think it was just 1 so I should be okay :biggrin:

do you know if it mattered which of the two arrows coming off the right of the Feynman diagram was the positron and which was the neutrino?

I don't think it matters but if it does it should've been the positron top and the neutrino bottom.

Reply 1383

GeneralOJB

Original post by benroxo

I think it was just 1 so I should be okay :biggrin:

do you know if it mattered which of the two arrows coming off the right of the Feynman diagram was the positron and which was the neutrino?

No, that doesn't matter.

Reply 1384

benroxo

Original post by Khenir

I don't think it matters but if it does it should've been the positron top and the neutrino bottom.

I put it the other way, oops. Reckon the boundary for an A will definitely be below 60?

Reply 1385

StalkeR47

Original post by benroxo

I put it the other way, oops. Reckon the boundary for an A will definitely be below 60?

Grade boundary has got to be 56-57 out of 70 for an A.

Reply 1386

That_Clever_Guy

Original post by benroxo

I put it the other way, oops. Reckon the boundary for an A will definitely be below 60?

Yeh it should be its rarely if never been higher :smile:

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Reply 1387

TheSnail

Just realised that for some absurd reason I put one of my answers as a fraction (1/3), it wasn't a sig fig question, will I lose any marks?

This was posted from The Student Room's iPhone/iPad App

Reply 1388

StalkeR47

Original post by g.k.galloway

Just realised that for some absurd reason I put one of my answers as a fraction (1/3), it wasn't a sig fig question, will I lose any marks?

This was posted from The Student Room's iPhone/iPad App

I think yes.. but maybe not if the examiner is not tooo strict! :redface:

Reply 1389

Abbseh

What range of marks out of /70 is normally an A? I think I have an idea of my mark but I need to know a round about grade... Stupid ISAs.

Reply 1390

Pataiiii

For the two marker on the photoelectric effect, did it say that the frequency increased or decreased?

Reply 1391

StalkeR47

Original post by Abbseh

What range of marks out of /70 is normally an A? I think I have an idea of my mark but I need to know a round about grade... Stupid ISAs.

Normally it is 54-56 out of 70 for an A. :biggrin:

Reply 1392

Qari

Original post by StalkeR47

I got same.

It didn't ask about Y sensitivity though

Reply 1393

StalkeR47

Original post by Pataiiii

For the two marker on the photoelectric effect, did it say that the frequency increased or decreased?

Exactly mate! I am also unsure. But I think it said decreased.... Which simply means emitted electrons will have less kinetic energy. :rolleyes:

Reply 1394

TheSnail

Original post by Pataiiii

For the two marker on the photoelectric effect, did it say that the frequency increased or decreased?

It said what happens when you reduce it :smile:

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Reply 1395

Khenir

Original post by Pataiiii

For the two marker on the photoelectric effect, did it say that the frequency increased or decreased?

one of decreased frequency with the same intensity.

the other was double the intensity with the same frequency.

Reply 1396

GeneralOJB

Original post by g.k.galloway

Just realised that for some absurd reason I put one of my answers as a fraction (1/3), it wasn't a sig fig question, will I lose any marks?

This was posted from The Student Room's iPhone/iPad App

I don't think so.

The mark scheme says:
"All other numerical answers should not be considered in terms of significant figures."
"Numerical answers presented in non-standard form are undesirable but should not be penalised."

Reply 1397

Qari

How much marks do you think I'd lose if I didn't do to it right signifacnt figures even though it don't tell you to?

Reply 1398

StalkeR47

Original post by Qari

It didn't ask about Y sensitivity though

Actually I saw 16 in your answer and ignored the rest. I said change the time base until 16 division on the x-axis appears since 8 division was for 1 wave cycle. So I did not get same as you :tongue: