AQA AS Physics A Unit 2 25/05/12 - PHYA2

here you go:

well is it ok to do a wire then?

hey you see on question 7...the last question of the paper, where it asked to draw an arrow to show the direction of the particle moving next? normally i would say it's going right...but on the jan 2012 paper there was a question similar where it said on the mark scheme that it was moving to the left...or am i just completely wrong o.O

i said to the left...

okidokes, i will take a pic of a few questions, not the whole paper.

Select some questions you want a look at and i'l post them.

only noobs do physics b

No, like ive learnt it! I mean revision!

Can't believe there was NOTHING on Young's slits/modulus etc... That was what I spent 95% of my time revising, grrr. So to confirm, 3/4 and 7/4 pi radians would score no marks for that phase difference question?? Say I lost about 15 marks... Is an A in this exam still in reach?

Anyone posted the mark scheme yet?
I've got my hands on a test paper tho so i know roughly where i went right or wrong.

i thought the 6 mark was fairly easy.

Clamp, hang the spring, variable weights. Counterweight.

Then explain.
measure initial spring length with a ruler. hang spring off the clamp. put various weights UP TO 20N on the spring and measure the extension with a ruler. Use hooke's law rearranged to find k for the various weights. Take a mean to be more accurate. Use more accurate weights to remove uncertainty further.

i thought the 6 mark was fairly easy.

Clamp, hang the spring, variable weights. Counterweight.

Then explain.
measure initial spring length with a ruler. hang spring off the clamp. put various weights UP TO 20N on the spring and measure the extension with a ruler. Use hooke's law rearranged to find k for the various weights. Take a mean to be more accurate. Use more accurate weights to remove uncertainty further.

You a teacher, or did you manage to 007 the paper home since you won't upload it all?

to find the spring constant you just use the gradient of the graph of your results.

it said about 20N..so i said to a maximum of 30 N to make sure....and idk if you can say take mean from different values and rearrange hookes law...i said draw a graph of force against extension and measure gradient for linear section of graph. other than that i wrote the same things.