AQA AS Physics Unit 2 (PHYA2) June 9th 2016 Resit paper Watch

philo-jitsu
Badges: 2
Rep:
?
#401
Report 3 years ago
#401
(Original post by Rahmada)
Same as the first but with a slightly steeper gradient and a higher plateau after a longer time

did everyone get 3 for the number of diffraction angles? I hate those questions.
Yep i got 3....because using equation n was 3.3 so couldnt be 4 when you equate the right side of sin equation to 1
1
reply
WashingPowder
Badges: 1
Rep:
?
#402
Report 3 years ago
#402
(Original post by JamieOH)
Yes at the start the gradient is the same... At 0... But as soon as it leaves rhe origin the gradient will be steeper as water has leaked?
Yes the gradient will decrease to a greater extent, because F=ma tells us that because the resultant force will be greater and m will be lower the acceleration acting on it would be greater than the other truck at the same time.
0
reply
WashingPowder
Badges: 1
Rep:
?
#403
Report 3 years ago
#403
(Original post by philo-jitsu)
Yeah your correct....i out the greater velocity but didnt catch the gradient part.....you think maybe dropped 2 marks for that?
Yeh i wouldn't think that would be many marks probably one mark for noticing the initial acceleration wouldn't change
0
reply
philo-jitsu
Badges: 2
Rep:
?
#404
Report 3 years ago
#404
The grating question....did you see the blue light first?
0
reply
JamieOH
Badges: 6
Rep:
?
#405
Report 3 years ago
#405
It wasnt really that bad apart from timing. Could of been a lot worse...

My famous last words
0
reply
JamieOH
Badges: 6
Rep:
?
#406
Report 3 years ago
#406
(Original post by philo-jitsu)
The grating question....did you see the blue light first?
I put violet but I'm terrible at waves so ifk
0
reply
philo-jitsu
Badges: 2
Rep:
?
#407
Report 3 years ago
#407
What did people put for the oscilloscope.....why they put them in unit 2 i have no idea....im jsed to describing fringe patterns not bloody amplitdues!!!!
0
reply
Rahmada
Badges: 0
Rep:
?
#408
Report 3 years ago
#408
(Original post by JamieOH)
I put violet but I'm terrible at waves so ifk
It must be either red or violet because they are at either end of the visible spectrum. I just don't have a clue which.
0
reply
philo-jitsu
Badges: 2
Rep:
?
#409
Report 3 years ago
#409
(Original post by JamieOH)
I put violet but I'm terrible at waves so ifk
Sorry i meant violet.....the bluest one lol...im crap at colours!!!
0
reply
WashingPowder
Badges: 1
Rep:
?
#410
Report 3 years ago
#410
(Original post by philo-jitsu)
The grating question....did you see the blue light first?
Violet because the lower wavelength would be seen first because sin(theta) is proportional to wavelength , so the smaller wavelength (violet) would have a smaller value of sin(theta )and therefore a smaller value of theta so you would see it first.
0
reply
TSRPAV
Badges: 7
Rep:
?
#411
Report 3 years ago
#411
(Original post by WillRose)
Took moments about the rock to find out the maximum mass that can be put on before tilting (when reaction at the bank = 0)

That mass was 48kg

46<48 therefore he can stand without tilting
yeah thats pretty much what is did then.

M(rock) 1.2m*32g must be > 0.8m*46g which is true so he can
0
reply
clarkey500
Badges: 17
Rep:
?
#412
Report 3 years ago
#412
(Original post by WillRose)
1.3 i think

using u=5
a=-9.81
v = 0
That's what I used so I probably got that!
0
reply
JamieOH
Badges: 6
Rep:
?
#413
Report 3 years ago
#413
(Original post by philo-jitsu)
Sorry i meant violet.....the bluest one lol...im crap at colours!!!
I'm colourblind I should get that mark for free
0
reply
WashingPowder
Badges: 1
Rep:
?
#414
Report 3 years ago
#414
(Original post by philo-jitsu)
What did people put for the oscilloscope.....why they put them in unit 2 i have no idea....im jsed to describing fringe patterns not bloody amplitdues!!!!
This was there single slit diffraction question , i just said the reasons why AB would get smaller (closer) , a smaller width
0
reply
matty9
Badges: 2
Rep:
?
#415
Report 3 years ago
#415
(Original post by Billsonbubbles)
Has someone done a hitler video yet ?

I feel like doing one
My mates almost finished one :P
0
reply
Ben-Jam-In
Badges: 1
Rep:
?
#416
Report 3 years ago
#416
(Original post by Rahmada)
It must be either red or violet because they are at either end of the visible spectrum. I just don't have a clue which.
Pretty sure it was violet since fringe spacing = (lambda x distance)/s so the smaller the wavelength the smaller the fringe spacing, so you would see the smallest wavelength first which is violet
0
reply
JamieOH
Badges: 6
Rep:
?
#417
Report 3 years ago
#417
Any chance of an unofficial mark scheme?
0
reply
philo-jitsu
Badges: 2
Rep:
?
#418
Report 3 years ago
#418
(Original post by WashingPowder)
This was there single slit diffraction question , i just said the reasons why AB would get smaller (closer) , a smaller width
I put that too....but it was 3 marks so i said amplitude stays the same.....ive never even heard of a question that relates wavelength to amplitude
0
reply
Jon1234321
Badges: 1
Rep:
?
#419
Report 3 years ago
#419
(Original post by micycle)
This is how I drew it:


For the last ray I drew it refracted away from the normal because it was going from more optically dense to less, is this wrong?
0
reply
yellowfan1555
Badges: 9
Rep:
?
#420
Report 3 years ago
#420
(Original post by the_chosen_one97)
For the support force i got 196N
Show 12ms-1 = 11.831....ms-1
Work out horizontal speed = 10.9ms-1
A few other answers I got:
7.3
15.6
0.21ms-2
3.3ms-1
0.18J
I recall getting most of these at some point.
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • Bournemouth University
    Midwifery Open Day at Portsmouth Campus Undergraduate
    Wed, 18 Dec '19
  • The University of Law
    Open Day – GDL and LPC - Chester campus Postgraduate
    Sat, 4 Jan '20
  • University of East Anglia
    Mini Open Day Undergraduate
    Mon, 6 Jan '20

Did you vote in the 2019 general election?

Yes (278)
48.01%
No (66)
11.4%
I'm not old enough (235)
40.59%

Watched Threads

View All