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AQA PHYA4 ~ 13th June 2013 ~ A2 Physics

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Reply 1160

Kgriffin13

What do you think is likely to come up in long answer questions?

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Reply 1161

Mohid Khan

can some one post unofficial markscheme and section a plz

Reply 1162

user1-4

hardest a level ever!

Reply 1163

username972634

What do you think is likely to come up in long answer questions?

Reply 1164

Lukerobbo

Has anyone got some good revision questions for this unit would be greatly appreciated

Reply 1165

sheepshap

How do u guys go about answering the written questions to get full 4/4 or 6/6?

Reply 1166

abdcefghi

Can someone help me out with Q10 and Q24 on the multi choice june 2012 it'd be much appreciated :smile:

thanks

http://filestore.aqa.org.uk/subjects/AQA-PHYA4-1-QP-JUN12.PDF

this unit is so hard

Original post by abdcefghi

Can someone help me out with Q10 and Q24 on the multi choice june 2012 it'd be much appreciated :smile:

thanks

http://filestore.aqa.org.uk/subjects/AQA-PHYA4-1-QP-JUN12.PDF

tried and couldnt do...

Reply 1169

username972634

Original post by abdcefghi

Can someone help me out with Q10 and Q24 on the multi choice june 2012 it'd be much appreciated :smile:

thanks

http://filestore.aqa.org.uk/subjects/AQA-PHYA4-1-QP-JUN12.PDF

Q10) Without damping as the driving force approaches the resonant frequency the amplitude tends to infinity. However the more heavy the damping then a lower amplitude is reached. Graphs A and C clearly have the wrong shape as the amplitude decreases when nearing the resonant frequency. And the reduction in the amplitude of B is less than in D. So the damping in D is heavy and the damping in B is light.

Reply 1170

Cheesegrater4

Original post by user1-4

tried and couldnt do...

lol

Reply 1171

username972634

Hi. Just wondering if anyone could offer an explanation for the following:

In the AQA Nelson Thorne's textbook it says that the phase difference between the displacement and the driving force increases from 0 to π/2 at resonance. And the phase difference between the velocity and driving force is π.

Also do we have to know how to calculate the effective spring constant in series/parallel for PHYA4 as I see no mention of it in the textbook and yet I'm pretty sure that we've done it in class. Thanks.

Also: Anyone have any lucky guesses as to what will come up in the long answer questions. I reckon it's going to be a cruel experimental type capacitor question.

Reply 1172

user1-4

Original post by mastermdc

Also do we have to know how to calculate the effective spring constant in series/parallel for PHYA4 as I see no mention of it in the textbook and yet I'm pretty sure that we've done it in class. Thanks.

Also: Anyone have any lucky guesses as to what will come up in the long answer questions. I reckon it's going to be a cruel experimental type capacitor question.