Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Physics Questions / Tips

Options
13»

Comments

  • Options
    #62
    ninebeanrows
    Registered Users Posts: 12,778 ✭✭✭✭ninebeanrows


    Struggling to get through physics at the moment.

    But something did strike me, formulae are the key, they account for much of the marks in section 2. So i'm drilling the electricity and mechanics formulae into my head. Doing the experiments and Particle/Modern Physics and Derivations and hoping to get me a C1. Going to be a tough 2 days!!


  • Options
    #63
    eZe^
    Registered Users Posts: 7,046 ✭✭✭eZe^


    We are scientists, we have a right to be ignorant to such trivial grammatical flaws.. :D:D:D:D


    Ive a couple of pre papers if anyone wants me to post them up.


  • Options
    #64
    carlowboy
    Registered Users Posts: 1,152 ✭✭✭carlowboy


    If its no hassle eZe^


  • Options
    #65
    ninebeanrows
    Registered Users Posts: 12,778 ✭✭✭✭ninebeanrows


    Does anyone want to give me a quick explanation of Simple Harmonic Motion, it's something that i don't really get in mechanics. Thanks ;)


  • Options
    #66
    eZe^
    Registered Users Posts: 7,046 ✭✭✭eZe^


    Weathercheck wrote:
    Does anyone want to give me a quick explanation of Simple Harmonic Motion, it's something that i don't really get in mechanics. Thanks ;)

    S.H.M is basically like circular motion, only its translated onto a line... I could explain this so much easier If i had a pen or whatever... but here it goes...
    Its a form of oscillation, where the acceleration towards the equilibrium position is directly proportional to the displacement away. When you pull a door stopper you feel the force working against your pull, and when u let go you see how it vibrates, thats SHM. It gets slower as it oscillates away from its natural position, otherwise it wouldnt be periodic.

    Examples would be a vibrating tuning fork and a pendulum oscillating about a small angle (the angle must be small so that the sin of the angle in radians is approximately equal to the angle in radians)


  • Advertisement
  • Options
    #67
    JC 2K3
    Closed Accounts Posts: 7,794 ✭✭✭JC 2K3


    Tomlowe wrote:
    omitting.



    suffices.
    I spelt omitting wrong, fair enough, but correcting "suffici" means that the joke flew right over your head.....

    EDIT: Wait, the plural in Latin is suffices, it'd be suffixes in English.

    Well done sir :D


  • Options
    #68
    Kwekubo
    Registered Users Posts: 1,238 ✭✭✭Kwekubo


    JC 2K3 wrote:
    pfft, stupid perfectly acceptableness.

    Why omit a Latin suffix if you have the option?

    Ommitting Latin suffici ftl.
    Not all Latin words ending in -us take -i in the plural. For example 'prospectus' always goes to 'prospectuses'.

    Edit: and 'suffix' goes to 'suffices' in Latin! :rolleyes:


  • Options
    #69
    carlowboy
    Registered Users Posts: 1,152 ✭✭✭carlowboy


    Kwekubo wrote:
    Not all Latin words ending in -us take -i in the plural. For example 'prospectus' always goes to 'prospectuses'.

    Edit: and 'suffix' goes to 'suffices' in Latin! :rolleyes:


    Wasn't he trying to use irony by posting suffici? That's the impression I got. :confused:


  • Options
    #70
    Fobia
    Registered Users Posts: 1,958 ✭✭✭Fobia


    Am I the only one finding people correcting the joke funnier than the joke was in the first place? :)


  • Options
    #71
    JC 2K3
    Closed Accounts Posts: 7,794 ✭✭✭JC 2K3


    Kwekubo wrote:
    Not all Latin words ending in -us take -i in the plural. For example 'prospectus' always goes to 'prospectuses'.

    Edit: and 'suffix' goes to 'suffices' in Latin! :rolleyes:
    Yes, but syllabus goes to syllabi, and I acknowledged my error with suffices above.


  • Advertisement
  • Options
    #72
    JC 2K3
    Closed Accounts Posts: 7,794 ✭✭✭JC 2K3


    carlowboy wrote:
    Wasn't he trying to use irony by posting suffici? That's the impression I got. :confused:
    Well I was trying to use irony, but I also made a fatal error of saying "suffici" insead of "suffices".


  • Options
    #73
    charlie1234
    Registered Users Posts: 33 ✭charlie1234


    What is the relation between the resistivity and the length of a wire?

    Name 3 precautions to be taken when measuring the acceleration due to gravity of an object.


  • Options
    #74
    madnirvana
    Closed Accounts Posts: 129 ✭✭madnirvana


    What is the relation between the resistivity and the length of a wire?
    resistivity=RA/l

    inversely prop


    Name 3 precautions to be taken when measuring the acceleration due to gravity of an object.[/QUOTE]

    .take account od the smallest time.. less air resistance
    .measure from the bottom of the ball bearing to the top of doortrap
    .Avoid parallex error when usind metre stick


  • Options
    #75
    Smegball
    Registered Users Posts: 2,283 ✭✭✭Smegball


    Right for the people like myself who don't have enough time to study all the experiments, what 5-10 would you advise would be essential to learn?


  • Options
    #76
    charlie1234
    Registered Users Posts: 33 ✭charlie1234


    Smegball wrote:
    Right for the people like myself who don't have enough time to study all the experiments, what 5-10 would you advise would be essential to learn?


    Acceleration due to gravity (free fall method)
    Acceleration prop. Force
    Conservation of Momentum
    Boyle's Law

    Frequency Inversely Prop. Length
    Frequency Prop. Square Root of Tension

    Measure Focal Length of a Concave Mirror
    Find Refractive Index of a Liquid

    To find the Specific Heat Capacity of a Liquid

    Measure the Resistivity of a Wire

    That's the 10 I'm banking on anyway, hopefully they come up:eek:


  • Options
    #77
    WildCardDoW
    Registered Users Posts: 842 ✭✭✭WildCardDoW


    I decided to drop, am disgusted by how much easier pass is TBH.

    I am honest enough to realise that I would be lucky to get a D. Anyway, good luck to y'all.


  • Options
    #78
    Cathy07
    Closed Accounts Posts: 6 ✭Cathy07


    Has anyone got any helpful predictions?? Our teacher didn't give us any!


  • Options
    #79
    Nehpets
    Closed Accounts Posts: 1,504 ✭✭✭Nehpets


    I predict the exam is tomorrow


  • Options
    #80
    Smegball
    Registered Users Posts: 2,283 ✭✭✭Smegball


    charlie1234 wrote:
    Acceleration due to gravity (free fall method)
    Acceleration prop. Force
    Conservation of Momentum
    Boyle's Law

    Frequency Inversely Prop. Length
    Frequency Prop. Square Root of Tension

    Measure Focal Length of a Concave Mirror
    Find Refractive Index of a Liquid

    To find the Specific Heat Capacity of a Liquid

    Measure the Resistivity of a Wire

    That's the 10 I'm banking on anyway, hopefully they come up:eek:

    Thanxs, I'll learn them aswell for the craic. So if they don't come up we can both drown our sorrows tomorrow :D


  • Options
    #81
    nedward
    Registered Users Posts: 348 ✭✭nedward


    Here's a handy mnemonic to learn for the Particle Physics Option

    Lesbians
    Eat
    Neat
    Muff

    Leptons are Electrons, all their Neutrinos and Muons


    Brown
    Nutty
    Poo

    Baryons are Neutrons and Protons

    My
    CUT is 2/3

    To remember the charges on quarks - Charmed, Up, and Top are all 2/3.


  • Advertisement
  • Options
    #82
    ninebeanrows
    Registered Users Posts: 12,778 ✭✭✭✭ninebeanrows


    Uneventful Days Can Seem Too Boring

    And it goes 2/3, 1/3 .....................

    And 1/3 is always negative


  • Options
    #83
    ZorbaTehZ
    Registered Users Posts: 2,149 ✭✭✭ZorbaTehZ


    nedward wrote:
    Leptons are Electrons, all their Neutrinos and Muons

    Don't forget the Tauons!


  • Options
    #84
    nedward
    Registered Users Posts: 348 ✭✭nedward


    ZorbaTehZ wrote:
    Don't forget the Tauons!


    Tough Lesbians Eat Neat Muff?


  • Options
    #85
    Nehpets
    Closed Accounts Posts: 1,504 ✭✭✭Nehpets


    I still have to do modern physics, particle physics and electricity, then exps, and go over everything... great


  • Options
    #86
    It wasn't me!
    Registered Users Posts: 13,034 ✭✭✭✭It wasn't me!


    Kwekubo wrote:
    For example 'prospectus' always goes to 'prospectuses'.

    The plural of "prospectus" is "prospectus".


  • Options
    #87
    charlie1234
    Registered Users Posts: 33 ✭charlie1234


    nedward wrote:
    Here's a handy mnemonic to learn for the Particle Physics Option

    Lesbians
    Eat
    Neat
    Muff

    Leptons are Electrons, all their Neutrinos and Muons


    Brown
    Nutty
    Poo

    Baryons are Neutrons and Protons

    My
    CUT is 2/3

    To remember the charges on quarks - Charmed, Up, and Top are all 2/3.

    Someone has been visiting Pat Doyle:D


Advertisement