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The Physics PHYA2 thread! 5th June 2013

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Reply 820

Substitution

Original post by StalkeR47

Could you post a diagram with the question you need help with? Thanks.

wasn't sure how to draw the triangle

Reply 821

UnknownUsername

Does anyone have any predictions for the six mark questions? :smile:

Reply 822

SAS18

Original post by UnknownUsername

Does anyone have any predictions for the six mark questions? :smile:

The two that come up quite a LOT are the diffraction ones for young's and stuff or the one about extension and young's modulus of a wire.

Reply 823

frankieeeeeee

can anyone explain Q. 4. b) (i) from the jun 2012 paper???

it's on fibre optics and i really don't understand!

the fibre is like, bent at 30 degrees and it asks you to calculate the angle of incidence??

whuuuuttt?

thankyou!!

Reply 824

Jimmy20002012

Original post by StalkeR47

weight is given by, mgsinx.

Is that always? :smile:

Posted from TSR Mobile

Reply 825

Raimonduo

Original post by BenChard

wasn't sure how to draw the triangle

Mmm, it seems you've gotten yourself in a muddle there. You need the line of the weight, to be the hypotenuse. I've just drawn this up, this should help a bit.

Reply 826

StalkeR47

Original post by BenChard

wasn't sure how to draw the triangle

This is how you draw. :smile:

Image000008.jpg26.0KB

Reply 827

StalkeR47

Original post by Jimmy20002012

Is that always? :smile:

Posted from TSR Mobile

Yes always for the inclined. :smile:

But, do not remember. Check my diagram. I have posted a min ago. up there. :smile:

(edited 10 years ago)

Reply 828

Emma1124

Does anyone have a few steps that can help me when working a question says to show the path of the ray until it returns to air, the seem to always get me! Thanks!!

Reply 829

frankieeeeeee

"http://filestore.aqa.org.uk/subjects/AQA-PHYA2-QP-JUN12.PDF"]HYA2-QP-JUN12.PDF

Reply 830

StalkeR47

Original post by Raimonduo

Mmm, it seems you've gotten yourself in a muddle there. You need the line of the weight, to be the hypotenuse. I've just drawn this up, this should help a bit.

Hey cool! How did you draw this clear? Is there a particular software?

Reply 831

Raimonduo

Original post by Emma1124

Does anyone have a few steps that can help me when working a question says to show the path of the ray until it returns to air, the seem to always get me! Thanks!!

Do you have an example of such a question?

please anyone??

January 2013 paper anyone? My teacher lost their login.

Reply 834

frankieeeeeee

it's only a one marker so it'll be quick to reply to!!

Reply 835

Sukura

Can you please help me on a question?

Question 6di from June 2010!

I'd truly appreciate it

Reply 836

Substitution

Original post by Raimonduo

Mmm, it seems you've gotten yourself in a muddle there. You need the line of the weight, to be the hypotenuse. I've just drawn this up, this should help a bit.

that's really good thanks