Turn on thread page Beta
    • Thread Starter
    Offline

    5
    ReputationRep:
    http://filestore.aqa.org.uk/sample-p...1-QP-JUN16.PDF
    -----------------------------------------------------------------------------------
    In the paper question 6.3 the annihilation question, i don't understand why you would times the rest mass by 2, as annihilation is , energy = rest mass , however in the mark scheme they said that energy =2 rest mass. Mark scheme below.
    -----------------------------------------------------------------------------------------------------------
    http://filestore.aqa.org.uk/sample-p...W-MS-JUN16.PDF
    Offline

    10
    ReputationRep:
    (Original post by BonBon1)
    http://filestore.aqa.org.uk/sample-p...1-QP-JUN16.PDF
    -----------------------------------------------------------------------------------
    In the paper question 6.3 the annihilation question, i don't understand why you would times the rest mass by 2, as annihilation is , energy = rest mass , however in the mark scheme they said that energy =2 rest mass. Mark scheme below.
    -----------------------------------------------------------------------------------------------------------
    http://filestore.aqa.org.uk/sample-p...W-MS-JUN16.PDF
    I believe that the previous question mentions that two photons are produced and asks you to explain why (due to conservation of momentum, two photons travelling in opposite directions must be produced). So then you know that there are two photons produced, you simply carry forward this information into the next part of the question.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 23, 2017

University open days

  1. University of Bradford
    University-wide Postgraduate
    Wed, 25 Jul '18
  2. University of Buckingham
    Psychology Taster Tutorial Undergraduate
    Wed, 25 Jul '18
  3. Bournemouth University
    Clearing Campus Visit Undergraduate
    Wed, 1 Aug '18
Poll
How are you feeling in the run-up to Results Day 2018?

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.