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    lol, sorry. I get it now. I was mixing up the first & second questions. U surely are good in Physics. Cool!
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    damn quite a hard exam espeiclally the question about the hubble stuff and the standing waves
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    (Original post by hatcher)
    damn quite a hard exam espeiclally the question about the hubble stuff and the standing waves
    for taht hubble one did you guys use v/c = ∂λ/λ

    i did, and then i did (660-390)/330 x3x10^8 =v

    anyone else did that? (units cancel on that)

    got 2.1x10^8 ms^-1

    is that right - was a trick qeutsion i think
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    i got the same phil

    For doppler effect, explain it in terms of light.. light source is getting further away, evidence of big bang.
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    (Original post by mackin boi)
    wat r the earlier parts of the Q??

    Is it got 2 do with standing waves. The diameter of a nucleus is 1*10^-15

    Using de broglie's equation Lambda = h/p
    ....
    v = = 0.000000000000000000663/9.11*10^-31 = 727771679473.11 m/s
    THats HUUGE...
    is this edexcel B:eek: - i didn't use de broglies anywhere

    tell me its not:eek:

    phil
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    (Original post by Phil23)
    for taht hubble one did you guys use v/c = ∂λ/λ

    i did, and then i did (660-390)/330 x3x10^8 =v

    anyone else did that? (units cancel on that)

    got 2.1x10^8 ms^-1

    is that right - was a trick qeutsion i think
    I did it that way...

    which probably means its wrong
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    (Original post by nas7232)
    i got the same phil

    For doppler effect, explain it in terms of light.. light source is getting further away, evidence of big bang.
    :cool: we aer the cool dudes

    anyway, what explanation did you give for hubbles obervations - could only think of one:rolleyes:

    I said 1) evidence universe is expanding
    .......2) evidence that teh furtehr galaxies are moving away from the centre of teh universe faster than the close ones - couldn't think of anythign else :dontknow:

    Pk
 
 
 
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