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**Physics...Before/After**

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    #212
    donvito99
    Registered Users Posts: 5,818 ✭✭✭donvito99


    What exactly is modern physics btw?


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    #213
    Bears and Vodka
    Registered Users Posts: 2,249 ✭✭✭Bears and Vodka


    donvito99 wrote: »
    What exactly is modern physics btw?

    Chapters on the electron (thermionic emission, photoelectric effect, x-rays etc.), then radioactivity (a b y-radiation, half life, decay), then nuclear fission + fusion. And then particle physics.


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    #214
    donvito99
    Registered Users Posts: 5,818 ✭✭✭donvito99


    subz3r0 wrote: »
    Chapters on the electron (thermionic emission, photoelectric effect, x-rays etc.), then radioactivity (a b y-radiation, half life, decay), then nuclear fission + fusion. And then particle physics.

    Ah right, I hope that comes up!


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    #215
    csallmighty
    Registered Users Posts: 650 ✭✭✭csallmighty


    Still don't know any of the definitions of by heart :/


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    #216
    HeaneyBabe
    Registered Users Posts: 288 ✭✭HeaneyBabe


    donvito99 wrote: »
    I am also more linguistic than physic-y!:p Dunno why I EVER chose Physics. It has bored the shoite outta me for a solid two years now.

    But tomorrow, it will all be over, FOREVER!

    You think like me. I am SO EXCITED for this to be over. I literally am screwed for tomorrow.

    I really don't understand anything on the course :L


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    #217
    HeaneyBabe
    Registered Users Posts: 288 ✭✭HeaneyBabe


    csallmighty wrote: »
    Still don't know any of the definitions of by heart :/

    make use of your logs


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    #218
    Bears and Vodka
    Registered Users Posts: 2,249 ✭✭✭Bears and Vodka


    HeaneyBabe wrote: »
    I really don't understand anything on the course :L

    Bring Vaseline tomorrow.


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    #219
    HeaneyBabe
    Registered Users Posts: 288 ✭✭HeaneyBabe


    subz3r0 wrote: »
    Bring Vaseline tomorrow.

    No need to be smart


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    #220
    Bears and Vodka
    Registered Users Posts: 2,249 ✭✭✭Bears and Vodka


    HeaneyBabe wrote: »
    No need to be smart

    Not understanding anything in physics is a sure way of failing it.

    Learn your experiments as well as you can, try and learn as many definitions as you can, give every part a go even if you have no clue (you might still get 3 marks for formulas and another 3 for substituting) and hope for the best.

    If you're doing OL a lot of it is common sense anyway, should be fine.


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    #221
    ei.sderob
    Closed Accounts Posts: 108 ✭✭ei.sderob


    Plonker! wrote: »
    This was annoying me too! If you simplify the units of w=sqrt(k/m) i.e sqrt((N m^-1)/kg) = sqrt((kg m m^-1 s^-2)/kg) = sqrt(s^-2) = s^-1 as in per second(the kg/kg and m*m^-1 both simplify to 1).
    So this implies units of w (omega) are per second? But angular velocity is rad/s, and it has to be radians in the units because you can use that value in the simple harmonic motion equation(applied maths):

    x=(amplitude)sin(w*time) and the "w*time" has to equal radians so it you can evaluate the sine thingy... Can anyone tell me where the radians come from?

    Edit: Wikipedia says its "angular frequency" not angular velocity, but that still makes no sense.

    We haven't actually covered S.H.M in app math so I only know the basics. Not really sure how I feel about it:P I really hope the mechanics question is nice tomorrow.


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    #222
    HeaneyBabe
    Registered Users Posts: 288 ✭✭HeaneyBabe


    subz3r0 wrote: »
    Not understanding anything in physics is a sure way of failing it.

    Learn your experiments as well as you can, try and learn as many definitions as you can, give every part a go even if you have no clue (you might still get 3 marks for formulas and another 3 for substituting) and hope for the best.

    If you're doing OL a lot of it is common sense anyway, should be fine.

    I'm aware of that. I have put in the work and am doing it to the best of my ability. Some of us aren't as good as Physics as others. You're either good or not good at this subject.
    And I'm not doing OL.

    thanks though


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    #223
    csallmighty
    Registered Users Posts: 650 ✭✭✭csallmighty


    Should I do the higher level paper if i'm only gonna bluff my way through it.
    I'm ok on some questions but it really depends on the actual question asked. For example: on the particle physics question, I have done most of them on the past papers and sometimes I get a B but then sometimes I get only a D or E. And i'm not good on definitions, and I only vaguely know the experiments and other questions.


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    #224
    finality
    Registered Users Posts: 1,763 ✭✭✭finality


    Right, narrowing down the course. Goodbye, optics and waves. Hello mechanics, heat, electricity, particle physics.

    be grand. :pac:


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    #225
    csallmighty
    Registered Users Posts: 650 ✭✭✭csallmighty


    Anybody?


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    #226
    Astrozombies
    Registered Users Posts: 145 ✭✭Astrozombies


    I'm fecked for this
    why am I doing HL
    why did I chose Physics
    why do I think Ill get a C2 in this


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    #227
    cocopopsxx
    Registered Users Posts: 261 ✭✭cocopopsxx


    Astrozombies wrote: »
    I'm fecked for this
    why am I doing HL
    why did I chose Physics
    why do I think Ill get a C2 in this

    My thoughts EXACTLY.

    Haven't even touched electricity, :eek:


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    #228
    Dwellingdweller
    Closed Accounts Posts: 825 ✭✭✭Dwellingdweller


    Anyone got a timing layout for the paper? I think it's 20 minutes per question but I'm not sure...


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    #229
    insua
    Registered Users Posts: 30 ✭insua


    Ye 20 each. There's no real time problem with physics though


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    #230
    Incompetent
    Registered Users Posts: 442 ✭✭Incompetent


    Last week I said business would make me repeat but I did well, I really hope it's the same for physics. Can't really bullsh!t your way through numbers though :(


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    #231
    ducky195
    Registered Users Posts: 3 ✭ducky195


    Absolutley chuffed with that paper!


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    #232
    fizzyorange
    Closed Accounts Posts: 592 ✭✭✭fizzyorange


    Best exam ever!
    So chuffed with how I did. :) Think I'll get an OL B2 or somewhere around that.


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    #233
    finality
    Registered Users Posts: 1,763 ✭✭✭finality


    Well that went surprisingly well! Didn't study for it at all and thought I'd get a D, but I might even get a B1 with how that went. Perfect paper.


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    #234
    Jimdwyer
    Registered Users Posts: 91 ✭✭Jimdwyer


    What a babe of a paper!!


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    #235
    FinnD
    Registered Users Posts: 125 ✭✭FinnD


    That was a handy paper, too bad I didn't study but :( say I might of scraped a pass but it's looking like a fail :L I'll be changing my cao around tonight, any decent courses in the low 300's?


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    #236
    Zhavey
    Registered Users Posts: 109 ✭✭Zhavey


    I'm not to usually use meme's but......

    everything_went_better_than_expected.jpg


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    #237
    Liveforrugby
    Registered Users Posts: 343 ✭✭Liveforrugby


    40 mark window, anyone think they got the A1?


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    #238
    Cathalog
    Registered Users Posts: 329 ✭✭Cathalog


    FinnD wrote: »
    That was a handy paper, too bad I didn't study but :( say I might of scraped a pass but it's looking like a fail :L I'll be changing my cao around tonight, any decent courses in the low 300's?

    Whatever you do, DO NOT PUSH YOUR MOST PREFERED COURSE DOWN ON YOUR LIST. sorry for shouting, but seriously, there are way too many people making this mistake, don't you be one of them.
    Leave your favourite, 2nd fav, 3rd etc.. In order of preference. And if you wan't, add a few low-point courses at the bottom of the list, and add a few to the level 6/7 list.


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    #239
    Epsi
    Registered Users Posts: 58 ✭✭Epsi


    Theory questions were grand. Maths questions were grand , made a few mistakes overall on maths , but they were fairly minor parts.

    Stupid mistake on my part for experiment question 1 , it was badly worded and I thought you were supposed to draw on the graph given to you in the question. Asked the examiner about it afterwards and he said it was okay though and I shouldn't loose any marks for it.

    Reckon I got a B1 (Secretly hoping for an A2) overall.


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    #240
    Cathalog
    Registered Users Posts: 329 ✭✭Cathalog


    Epsi wrote: »
    Theory questions were grand. Maths questions were grand , made a few mistakes overall on maths , but they were fairly minor parts.

    Stupid mistake on my part for experiment question 1 , it was badly worded and I thought you were supposed to draw on the graph given to you in the question. Asked the examiner about it afterwards and he said it was okay though and I shouldn't loose any marks for it.

    Reckon I got a B1 (Secretly hoping for an A2) overall.

    You were.


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    #241
    finality
    Registered Users Posts: 1,763 ✭✭✭finality


    Epsi wrote: »
    Theory questions were grand. Maths questions were grand , made a few mistakes overall on maths , but they were fairly minor parts.

    Stupid mistake on my part for experiment question 1 , it was badly worded and I thought you were supposed to draw on the graph given to you in the question. Asked the examiner about it afterwards and he said it was okay though and I shouldn't loose any marks for it.

    Reckon I got a B1 (Secretly hoping for an A2) overall.

    I thought you were supposed to draw on the graph given in the question? That's what everyone in my exam centre did.


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