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    (Original post by Steve8052)
    so if i got -2, -2.5, -1.6 would it be wrong because i thought it must be negative for the standing wave to form.
    i think they were supposed to be positive

    vector addition of the two waves' displacements = standing wave's displacement

    no?

    just me?

    **** :mad:
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    (Original post by nas7232)
    i got 2,1.6,2.5 [no specific order as ican't remember]
    what question was this for ???
    dont seem to remeber any such question :eek: *panicking* :eek:
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    (Original post by Mr Tom)
    i think they were supposed to be positive

    vector addition of the two waves' displacements = standing wave's displacement

    no?

    just me?

    **** :mad:
    no..i agree
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    i had first value of 0cm -2cm was one and cant remember other one
    for 2 waves to form a stationary they must be in antiphase, there are points were the vector sum of the displacemnts are = 0 (nodes)

    Oh come to think bout it i got that totaly wrong :eek:
    oh **** i knew i shouldnt have checked this thread , always makes me feel bad
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    (Original post by hajira)
    no..i agree
    w00h00

    :dancing2:
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    (Original post by hajira)
    no..i agree
    i dont agree with u because they were all out of phase so the displacements were the differences between the two.
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    (Original post by DmAsTeR)
    i dont agree with u because they were all out of phase so the displacements were the differences between the two.
    where does phase come into all this? It was a simple displacement questions! answers were something like 2.5, 0 and -1.6 - i got somethihng like that
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    aint this a phy5 thread lol
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    (Original post by DmAsTeR)
    i dont agree with u because they were all out of phase so the displacements were the differences between the two.
    well the way i thought of it was in terms of the graph.
    if the 'resultant' wave was drawn..n one of the 'component' wave was drawn..
    u wud take away the displacement of the 'resultant' from the 'component' wave's displacement
    ew
    that sounds horrible :eek:
    but anyway
    thats the way i looked at it..cuz at any one point the total displacement is equal to the displacements of the two combining waves

    o n yeash...it does happen to b a phy5 thread :rolleyes:
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    (Original post by Phil23)
    where does phase come into all this? It was a simple displacement questions! answers were something like 2.5, 0 and -1.6 - i got somethihng like that
    wohooo i got somin similar
    0 for first one then ............ oh no wait i got -2 and 1.6 (cant remember which ones were negative if any)

    so 2/3 not bad (if phil is correct)

    anyway if u guys spent the same amount of time posting in the phy6 revision thread the world would be a happier place for all
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    (Original post by Phil23)
    where does phase come into all this? It was a simple displacement questions! answers were something like 2.5, 0 and -1.6 - i got somethihng like that
    i think i got 2, 2.5, -1.6
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    anyway for phy 5 practical what did u lot get for the y intersept on the very last question? i think i got somethin like 3
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    (Original post by DmAsTeR)
    anyway for phy 5 practical what did u lot get for the y intersept on the very last question? i think i got somethin like 3
    st 30-something:eek: - was ages ago - think i got 2.4, - i cant remember:rolleyes: was easy though - think i got 92% or around that - only messed up that describing the experiment bit for the section C

    how'd you find it?

    pk
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    Yes Anotha Winnin Thread For The Mack Man
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    ^lol

    Lets keep this thread focused on PHY5, not 4!
    There is already a thread for that
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    (Original post by Phil23)
    st 30-something:eek: - was ages ago - think i got 2.4, - i cant remember:rolleyes: was easy though - think i got 92% or around that - only messed up that describing the experiment bit for the section C

    how'd you find it?

    pk
    that was easy...they told us everythin we needed to do... never even needed to think for anythin...they gave us a formula for that experiment...all u need to do was rearrange it and apply a method...then u get the values in the table..plot a graph..and draw a straight line and read off the y-axis...i did it a bit wrong as i plotted the graph the other way round but i got the answer as i just needed to read off the x-axis....so all was good...everyone should have got an A for that.
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    (Original post by DmAsTeR)
    that was easy...they told us everythin we needed to do... never even needed to think for anythin...they gave us a formula for that experiment...all u need to do was rearrange it and apply a method...then u get the values in the table..plot a graph..and draw a straight line and read off the y-axis...i did it a bit wrong as i plotted the graph the other way round but i got the answer as i just needed to read off the x-axis....so all was good...everyone should have got an A for that.
    easier than the AS practical for sure! i messed up my actual AS practical, and my resit this year - aghhh - AS practicals are so dodgy!
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    Does any of you know when we will be able to get the marking schemems for June 2005? It would be a lot better than guessing and discussing!!
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    about 2 months time
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    Hopefully one of us will get 90/90, 120/120 in every paper so we can use them as a markscheme
 
 
 
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