Turn on thread page Beta

2016 Official AQA New Spec AS Level Physics Paper 1 - 24th of May 2016 watch

    Offline

    2
    ReputationRep:
    (Original post by JTawn)
    I reckon it said the air left at a higher speed and you assumed it was the same mass?
    That is exactly what I did.

    p = mv

    higher v and constant m = higher p
    Offline

    0
    ReputationRep:
    (Original post by pippaaa99)
    Lol I definitely got this wrong but wavelength was 12cm and then you can use v=f x wavelength to find f. I reckon some marks will be for showing you measured the diagram and then the rest for the working
    but we dont know the speed, do we?
    Offline

    0
    ReputationRep:
    (Original post by BainesyA)
    The deflector plates caused a change in direction
    I wrote : I wrote momentum is a vector and therefore has direction. One side must be considered negative. Either change in momentum = mass x final velocity - - mass x initial velocity OR = mass x - final velocity - mass x initial velocity
    Both scenarios would cause a change in momentum even if the velocity is the same.
    Offline

    2
    ReputationRep:
    (Original post by pippaaa99)
    Okay sorry no need to get rude...
    I apologise, looking back, it came across rude. I didnt mean that to be the case
    Offline

    1
    ReputationRep:
    (Original post by BainesyA)
    That is exactly what I did.

    p = mv

    higher v and constant m = higher p
    Yeah I said the same, nice:beer:
    Offline

    0
    ReputationRep:
    For microwave, if you said wavelength was 8cm instead of 12, how many marks will you loose ?
    Offline

    0
    ReputationRep:
    (Original post by wolvan)
    but we dont know the speed, do we?
    3x108 because it's EM radiation. I totally had a mind blank also don't worry
    Offline

    6
    ReputationRep:
    Has anyone made an unofficial mark scheme for this paper ?
    Offline

    0
    ReputationRep:
    (Original post by mz123)
    For microwave, if you said wavelength was 8cm instead of 12, how many marks will you loose ?
    If you use the right equation after you'll probably get some marks maybe 2/5??
    Offline

    2
    ReputationRep:
    (Original post by wolvan)
    but we dont know the speed, do we?
    I think she meant c = f*wavelength

    (c and v are close on the keyboard)
    Offline

    1
    ReputationRep:
    (Original post by wolvan)
    but we dont know the speed, do we?
    Not if you think of it as V= fx, thinking of it as C=fx where c is the speed of light is what ya want
    Offline

    0
    ReputationRep:
    (Original post by pippaaa99)
    3x108 because it's EM radiation. I totally had a mind blank also don't worry
    but that's only in vacuum though?
    Offline

    0
    ReputationRep:
    (Original post by BainesyA)
    I apologise, looking back, it came across rude. I didnt mean that to be the case
    Don't worry about it. Realistically no one knows the right answer anyone because it's likely we've forgotten the questions because exams are stressful. What we need is an unoffical markscheme!!
    Offline

    0
    ReputationRep:
    (Original post by wolvan)
    but that's only in vacuum though?
    If they don't give us a way of working it out, I think we assume it's the same, otherwise I have no idea what it could be
    Offline

    0
    ReputationRep:
    (Original post by mz123)
    For microwave, if you said wavelength was 8cm instead of 12, how many marks will you loose ?
    at least 1 for getting it wrong and 1 for wrong final answer
    Offline

    2
    ReputationRep:
    (Original post by pippaaa99)
    Don't worry about it. Realistically no one knows the right answer anyone because it's likely we've forgotten the questions because exams are stressful. What we need is an unoffical markscheme!!
    Indeed we do
    Offline

    7
    ReputationRep:
    (Original post by BainesyA)
    I think she meant c = f*wavelength

    (c and v are close on the keyboard)
    Speed of em waves are 3x10^8
    Offline

    0
    ReputationRep:
    (Original post by BainesyA)
    I think she meant c = f*wavelength

    (c and v are close on the keyboard)
    Haha I do chemistry too- mixing up my letters in the equations!!
    Offline

    2
    ReputationRep:
    (Original post by JTawn)
    Yeah I said the same, nice:beer:
    Atleast we have scored 1/70 then
    Offline

    0
    ReputationRep:
    (Original post by BainesyA)
    Indeed we do
    was looking at the physics and math tutor web, but it seems they only upload math ones

    (Original post by Roshan123)
    Speed of em waves are 3x10^8
    only in vacuum
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: April 30, 2018
Poll
Cats or dogs?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.