Turn on thread page Beta
    Offline

    0
    ReputationRep:
    (Original post by Twitchy)
    Surely not, thats far too easy. I put something about it causing neighboring atoms to clump together (which is how its used in cleaning)
    How is it easy?

    Its a property of the wave. Your answer is a use of the wave. thats not what the question was asking

    the answers i believe are: high frequency, short wavelength, non-ionising
    Offline

    0
    ReputationRep:
    I put: high frequency (above 20000 Hz) and cannot be heard :s To be fair they are both correct, but very similar.
    Offline

    0
    ReputationRep:
    the grade boundaries better below
    i think i've got like 35/45 juding by wat everyone else has put

    the first question SUCKEDDDDDDD

    i liked that past one in january
    Offline

    16
    ReputationRep:
    haha first question im sure was off the foundation tier
    Offline

    0
    ReputationRep:
    the past paper was WAY easier!
    Offline

    0
    ReputationRep:
    **Look at the first post in this thread, that was the exact question in the exam lol
    Offline

    16
    ReputationRep:
    i thought it was harder.. but then again i suck at light+lenses
    Offline

    0
    ReputationRep:
    right i found it okay/hardishh, but for the 2 reasons one about that internet thing. Would i get a mark for saying they are just lookin at artificial satellites and they havent looked at a natural sattelite such as the moon? anyway i need a low B to get an A overall. what do u think a B will be in that? 21/45???
    Offline

    16
    ReputationRep:
    (Original post by MarcusLL)
    **Look at the first post in this thread, that was the exact question in the exam lol
    i reckon ultrasound reflects partially off a boundary will count since it was about how it relates to detecting cracks in metal doesnt it?

    what did you get for the two peaks, i put thre first is it reflecting off the crack, and the second is it reflecting off the back of the block
    Offline

    0
    ReputationRep:
    (Original post by trance addict)
    i reckon ultrasound reflects partially off a boundary will count since it was about how it relates to detecting cracks in metal doesnt it?

    what did you get for the two peaks, i put thre first is it reflecting off the crack, and the second is it reflecting off the back of the block
    yep pulse A was a flaw in the metal block pulse B was just the back of the metal block.
    Offline

    0
    ReputationRep:
    (Original post by FreddoMufc)
    right i found it okay/hardishh, but for the 2 reasons one about that internet thing. Would i get a mark for saying they are just lookin at artificial satellites and they havent looked at a natural sattelite such as the moon? anyway i need a low B to get an A overall. what do u think a B will be in that? 21/45???
    In January the boundaries were:
    A* = 31
    A = 26
    B = 21
    C = 16
    D = 13
    E = 11.

    Seeing as most people think this paper was harder, the boundaries will probably go down by 2 or 3 marks.
    Offline

    0
    ReputationRep:
    (Original post by FreddoMufc)
    right i found it okay/hardishh, but for the 2 reasons one about that internet thing. Would i get a mark for saying they are just lookin at artificial satellites and they havent looked at a natural sattelite such as the moon? anyway i need a low B to get an A overall. what do u think a B will be in that? 21/45???
    yep thats true. because natural satellites have a greater mass and thus a greater gravitational pull so therefore higher altitude doesnt matter to them, the period is dependant upon their mass as well i think
    Offline

    0
    ReputationRep:
    ultrasound is longitudinal is a property right?
    Offline

    0
    ReputationRep:
    OOO thanks for that mate, uve kind of reassured me there
    Offline

    0
    ReputationRep:
    (Original post by Muddy91)
    ultrasound is longitudinal is a property right?
    Yes
    • PS Helper
    • Thread Starter
    Offline

    2
    PS Helper
    (Original post by MarcusLL)
    **Look at the first post in this thread, that was the exact question in the exam lol
    Haha, yeah I posted that. I got it from my Nelson Thornes textbook, except it was worth 7 marks.
    Offline

    0
    ReputationRep:
    lol, awesome.

    i think ive done ok, though i did blag one or two questions, but i reckon ive lost max 4 marks in each exam

    maybe 5
    Offline

    0
    ReputationRep:
    (Original post by piece_by_piece)
    Haha, yeah I posted that. I got it from my Nelson Thornes textbook, except it was worth 7 marks.
    Lol ye, i did that question from that textbook. I also had the mark scheme to that question!!
    Offline

    0
    ReputationRep:
    (Original post by FreddoMufc)
    OOO thanks for that mate, uve kind of reassured me there
    Ye, i put an answer similar to that. I recognised that natural satellites obviously have different properties to artifical ones and thats why the question explicitly mentioned 'artificial'
    Offline

    0
    ReputationRep:
    Pretty easy paper, only question I struggled with was coming up with 2 reasons why the results from the satellite table may not be the same for all satellites.
 
 
 

University open days

  • Heriot-Watt University
    School of Textiles and Design Undergraduate
    Fri, 16 Nov '18
  • University of Roehampton
    All departments Undergraduate
    Sat, 17 Nov '18
  • Edge Hill University
    Faculty of Health and Social Care Undergraduate
    Sat, 17 Nov '18
Poll
Black Friday: Yay or Nay?
Useful resources

Study tools

Rosette

Essay expert

Learn to write like a pro with our ultimate essay guide.

Thinking about uni already?

Thinking about uni already?

See where you can apply with our uni match tool

Student chat

Ask a question

Chat to other GCSE students and get your study questions answered.

Creating

Make study resources

Create all the resources you need to get the grades.

Planner

Create your own Study Plan

Organise all your homework and exams so you never miss another deadline.

Resources by subject

From flashcards to mind maps; there's everything you need for all of your GCSE subjects.

Papers

Find past papers

100s of GCSE past papers for all your subjects at your fingertips.

Help out other students

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

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.