Results are out! Find what you need...fast. Get quick advice or join the chat
Hey! Sign in to get help with your study questionsNew here? Join for free to post

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

Announcements Posted on
  • View Poll Results: Difficulty of exam (120 UMS boundaries)
    Very easy (68-70 for 120 UMS)
    3.74%
    Easy (64-67 for 120 UMS)
    32.71%
    Medium (60-63 for 120 UMS)
    49.53%
    Hard (57-59 for 120 UMS)
    14.02%

    • 2 followers
    Offline

    ReputationRep:
    (Original post by Mystic Creature)
    Can anyone explain the difference between progressive waves and stationary waves? Progressive waves make up a stationary wave, is it?
    The way I think of it is a progressive wave appears to move horizontally, whereas a stationary wave just oscillates in the same position.

    But yes...
    A stationary wave if formed when two progressive waves of the same amplitude and frequency, in the same mediumm, travelling in opposite directions superpose to produce points of zero displacement (nodes) and maximun displace (antinodes).
    • 0 followers
    Offline

    ReputationRep:
    Can someone explain the diffraction grating pattern with white light, Im like :eek:
    • 43 followers
    Offline

    ReputationRep:
    (Original post by Dunclr)
    Can someone explain the diffraction grating pattern with white light, Im like :eek:
    Once we learn it, I'll be happy to explain it to you.
    • 4 followers
    Online

    ReputationRep:
    when dots appear on the screen, in diffraction, does that mean the light source used wasn't monochromatic?
    • 0 followers
    Offline

    ReputationRep:
    I used to Like physics, got an A in the first unit, but I CANT DO THIS SH*T haha
    • 4 followers
    Online

    ReputationRep:
    (Original post by Dunclr)
    Can someone explain the diffraction grating pattern with white light, Im like :eek:
    diffraction grating with white light produces fringes that have colours of the spectrum. the zero order is just white light since all the wavelengths pass through it. and the 1st and 2nd and more orders have the spectrum, roygbiv on one side and mirrored on the other side so vibgyor.
    • 0 followers
    Offline

    ReputationRep:
    (Original post by Dunclr)
    I used to Like physics, got an A in the first unit, but I CANT DO THIS SH*T haha
    Dude I'm with you on that. I love physics, but these waves and optics chapters make me want to throw up, seriously. Unit 1 is so much easier (which btw, I havent took yet - also taking that that in may, in 5 days :eek: )
    • 0 followers
    Offline

    ReputationRep:
    (Original post by Mystic Creature)

    Dude I'm with you on that. I love physics, but these waves and optics chapters make me want to throw up, seriously. Unit 1 is so much easier (which btw, I havent took yet - also taking that that in may, in 5 days :eek: )
    Me too, well said!
    • 2 followers
    Offline

    ReputationRep:
    anyone got a list/idea of the possible 6 markers? there's always that one big evil question!
    • 0 followers
    Offline

    ReputationRep:
    in my opinion i think it is probs going to be on energy changes
    • 0 followers
    Offline

    ReputationRep:
    by the way is your exam in the morning or afternoon
    • Thread Starter
    • 18 followers
    Offline

    ReputationRep:
    (Original post by ehtisham_1)
    by the way is your exam in the morning or afternoon
    The exam is in the afternoon - it's all standardized across the country (AQA Physics A, AS unit 2).
    • 2 followers
    Offline

    ReputationRep:
    (Original post by ehtisham_1)
    in my opinion i think it is probs going to be on energy changes
    what do you mean by energy changes? like gravitational potential to kinetic and all that jazz
    • 0 followers
    Offline

    ReputationRep:
    (Original post by JenniS)
    what do you mean by energy changes? like gravitational potential to kinetic and all that jazz
    Ground state, electron negative energy maybe
    • 1 follower
    Offline

    ReputationRep:
    dont actually know a single thing about moments or mechaics -.- god im screwed for unit 2! and does anyone have any advicce on the long answer questions i usualy leavethem not having a clue what to do
    • 6 followers
    Offline

    ReputationRep:
    I'm undertaking a 5 day physics PHYA2 challenge

    I've never done PHYA2 before (self teaching) and intend to learn it in 3 days.

    I've got through all the mechanics, and am now on to power and materials sections. I'm not looking forward to waves though :/
    • 0 followers
    Offline

    ReputationRep:
    do we need to know about the renewable energy section in the energy and work section of the aqa book
    • 6 followers
    Offline

    ReputationRep:
    (Original post by ehtisham_1)
    do we need to know about the renewable energy section in the energy and work section of the aqa book
    http://store.aqa.org.uk/qual/gce/pdf/AQA-2450-W-SP.PDF
    No, it's not in the spec.
    Anywoo, it just seems like the earlier part of that section applied to different things.
    • Thread Starter
    • 18 followers
    Offline

    ReputationRep:
    I'm scared of the weird word questions they can throw up (especially 6 markers). I understand the physics, but I am unsure what to put to get the marks... (and I often don't ).
    • 0 followers
    Offline

    ReputationRep:
    (Original post by silentlife)
    I'm scared of the weird word questions they can throw up (especially 6 markers). I understand the physics, but I am unsure what to put to get the marks... (and I often don't ).
    most of the time its just stating the obvious

Reply

Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: January 15, 2013
New on TSR

Exclusive Nick Clegg interview

Your questions answered by the deputy prime minister

Article updates
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.