Physics Discussions

Lantis

Any predictions as to what will come up?

One of the two latent heat experiments comes up every year, right?

subway_ie

No, they don't come up every year.
Predictions:
Section A:
Q1,2,3,4 will be experiments
Section B:
Q.5,6,7,8,9,10,11,12 will have questions about stuff on the syllabus. Q10 will have a part (a) and a part (b), one of which will be on particle physics, the other on applied electricity. Q5 will be broken into 10 parts. Question 12 will be broken into 4.

Smellyirishman

I would strongly suggest knowing all the liner motion experiments for part 1 cause they aint been asked yet so.

Other than that im at a loss, just need to pass the damb subject tho

penguincakes

My guesses:

spectrometer
measurement of SHC of a liquid
a gravity one?
some electricity one (I haven't done these yet)

subway_ie

Originally posted by penguincakes
My guesses:

spectrometer

Please God no. One of the only practicals I just cant't remember. No matter how many times I revise it, I can never reproduce it. It's a work of evil.

DS

Just remember all the adjustments and you're fine. Focus telescope on distant object. Adjust length to bring crossthreads into focus. Adjust slit in other thingy to allow a narrow beam of light through. Adjust levelling screws for spectrometer.

oeNeo

I hope the question 6 from the sample paper comes up. That question rawks.

Mutant_Fruit

Originally posted by subway_ie
No, they don't come up every year.
Predictions:
Section A:
Q1,2,3,4 will be experiments
Section B:
Q.5,6,7,8,9,10,11,12 will have questions about stuff on the syllabus. Q10 will have a part (a) and a part (b), one of which will be on particle physics, the other on applied electricity. Q5 will be broken into 10 parts. Question 12 will be broken into 4.

Wow, so accurate yet so useless Still, i suppose no-one can complain that you predicted wrongly, heh heh heh. Who would have guessed they were asking questions on stuff from the syllabus!

Sarunas

After history mis-predictions, i dont want to fsckup physics. So dont waste time on predicting! Just learn as much as possible.

Know every experiment very well, know the formulae, definitions. Do some exam papers and you will be fine.

Great, 2 exams left (phy and engineering). Will start doing/revising/learning physics from tomorrow for 5 full days, 8 hours each.


Cough *should* cough be fine.

subway_ie

Originally posted by Mutant_Fruit
Wow, so accurate yet so useless Still, i suppose no-one can complain that you predicted wrongly, heh heh heh. Who would have guessed they were asking questions on stuff from the syllabus!

I know, just don't tell anybody - I got the info from a department insider - top secret stuff. Do ya think I should change my name to InformedBoy?

Great, 2 exams left (phy and engineering). Will start doing/revising/learning physics from tomorrow for 5 full days, 8 hours each.

That's my plan from tomorrow onwards, after Business (sooooooooooooo fecked). Apart from the 8 hour thing. I tried that before, and failed miserably. I think 4 is a bit more realistic. Lots of writing out experiments/definitions/formulae. I've already done all the papers, but I suppose it wouldn't hurt to go over them again a few more times. I've got my Real World Physics book tp start on, then move onto Less Stress More Success, then onto that uber-revision book (the pink one). It's like the mecca of physics teachers who are always reminiscing about the old course. I figure, after I read through all of those, write down key points/definitions/formulae and go through my exam-paper solutions I should be in a pretty good position. Then I just have to do the same for applied maths from Monday until Thursday...

Sarunas

After looking at the papers, i realised in physics, they give large number of extremely tricky questions. Have to watch out and go back to basics.

You mean you studied for a week, 4+ hours each day, and still managed to fail? what subject?

Patrick

Considering this is a fairly new course there are a few important areas that haven't appeared yet. My predictions:

Section A

Investigation of relationship between period and length for a simple pendulum and hence calculation of g Measurement of the wavelength of monochromic light Measurement of the speed of sound in air Measurement of specific heat capacity of water by a mechanical or electrical method.

There will be an experiment from the Electricity section here too but I dunno which one.

Section B
Gravitation, newtons law g. Proof of kelpers 3rd law.

Possibly sometimes on capacitors?
Also cricital angle stuff hasn't come up as a full question... refractive index etc.

Any other thoughts?

I failed the mock mainly cos i had done nothing. I have been doing alot more since but I'm still kinda worried bout this one :dunno:

subway_ie

Originally posted by Patrick
Investigation of relationship between period and length for a simple pendulum and hence calculation of g
Measurement of the wavelength of monochromic light
Measurement of the speed of sound in air
Measurement of specific heat capacity of water by a mechanical or electrical method.
[/list]

I'm fairly sure all of the above have come up at some point... maybe not in section A, but definetly in section B. BTW, if you're ever asked to calculate "g" in section B, you should *always* use the simple pendulum, don't bother with g by freefall.

Mutant_Fruit

G by freefall is a helluva lot easier i would have thought. Thats what i would have done.

Patrick

I'm fairly sure all of the above have come up at some point... maybe not in section A, but definetly in section B. BTW, if you're ever asked to calculate "g" in section B, you should *always* use the simple pendulum, don't bother with g by freefall.

No I don't believe they have.
I think g by freefall is much easier to remember.

subway_ie

Originally posted by Mutant_Fruit
G by freefall is a helluva lot easier i would have thought. Thats what i would have done.

It's alot easier to remember, but apparently the examiners prefer you to use the simple pendulum method, it's more "scientific". If you're stuck then I'm sure g by freefall would probably do... but simple pendulum would be preferable.

No I don't believe they have.

They definetly have somewhere... probably section Bs, possibly in the department sample paper two. I definetly remember doing them when I did all the papers.

Patrick

They definetly have somewhere... probably section Bs, possibly in the department sample paper two. I definetly remember doing them when I did all the papers.

Sample paper... exactly! They haven't come up in the LC yet!

PrecariousNuts

Originally posted by subway_ie
Please God no. One of the only practicals I just cant't remember. No matter how many times I revise it, I can never reproduce it. It's a work of evil.

They are not specifically allowed ask the spectrometer, some of us have more modern equipment and they must leave the question open

Mutant_Fruit

It's alot easier to remember, but apparently the examiners prefer you to use the simple pendulum method

To hell with what they prefer, its right, and its easier to remember and do (applied maths makes linear motion formula sooo easy), so i'll do it that way.

people probably think i;m stubborn when they read that, and they'd be right

Mutant_Fruit

Sorry for double post...

They are not specifically allowed ask the spectrometer, some of us have more modern equipment and they must leave the question open

Hell yes they are!! The spectromator is listed on the course as a requirement, if you can;t use it, you havn't covered the course.

You need to know the use of it, and the standard adjustments for the spectrometer. Thats all really.

DS

applied maths makes linear motion formula sooo easy

Doesn't applied maths make the whole mechanics area laughably easy? I mean, nothing they can do, circular motion, SHM, linear acceleration, resolving vectors, is going to come remotely close to challenging an honours applied maths student. And the class would be talking to the teacher about how to avoid mechanics and Q6 at all costs. Oh how I laughed.

Mutant_Fruit

well yes, i suppose if they ask any mechanics related questions i'd be looking at close to full marks (As would any applied maths student). Finally! a use fo applied maths

subway_ie

Originally posted by Mutant_Fruit
well yes, i suppose if they ask any mechanics related questions i'd be looking at close to full marks (As would any applied maths student). Finally! a use fo applied maths

Although we did have to do accelerated linear motion, relative velocit, projectiles, impacts and collission, motion of connected particles, simple harmonic/circular motion, statics, hydrostatics, rigid body rotation and differential calculus... Out of all that, the only actual usable part are Newtons three equations and maybe a few circular motion equations.

Smellyirishman

OK instead of boasting that your minds are so superior can we start getting with the suggest "must-know"`s for physics?!!

And dont say you " must-know " everythin (knows thats still gonna happen)

subway_ie

Originally posted by Smellyirishman
OK instead of boasting that your minds are so superior can we start getting with the suggest "must-know"`s for physics?!!

Who's boasting that their minds are superior?

Smellyirishman

I was just kidding

... everyone knows that it is me who is INferior

penguincakes

Originally posted by subway_ie
Who's boasting that their minds are superior?

Well if you *need* someone to I'm always available...

Ok physics, right. Well I find that one of the best things to do is to go through the papers & pick out all the little finickity bits that you don't even notice while you're reading through the book (U values anyone? DBA vs DB scales?) & know how to answer questions on them. Don't say "they'll never ask about that" & ignore it, cause once you say that, you've just jinxed yourself & made it 10 times more likely that that particular thing is going to turn up on your paper & lose you your A or B or whatever.

Go through the experiments in detail. Know 2 or 3 precautions to take for each one.



Can anyone teach me how to remember electricity stuff?

Boston

Well the option will be there anyway, it doesn't have to be there every year, but they did say it would be on for the first three years of the exam, this being the third it should come up.

Mutant_Fruit

Do what i did, and do every question in the book twice. I now know all the electricity chapters

Atreides

Originally posted by Mutant_Fruit
Do what i did, and do every question in the book twice. I now know all the electricity chapters

That book is pure ****e, hated it and never used it.

subway_ie

Originally posted by Skanger
That book is pure ****e, hated it and never used it.

Real World Physics isn't that bad, it's probably the best leaving cert physics book out right now. There's no point reading through it all now, just stick to your notes. But it did have some nice explanations and was easy enough to follow. Some of the definitions aren't great - but it's generally ok.

PrecariousNuts

I like to read motion mountain, its great if you're interested in physics and its free. www.motionmountain.com 24mb pdf.

livingupatree

Does anyone know where I could find a definitive list of all the definitions on the physics course? My current list stands at around 150, not sure if that's a little excessive??

Patrick

i presume u don't have rapid revision physics.
it's pretty good.

maybe try skoool.ie

Smellyirishman

K im looking to pass this subject and no more.

I just need a run through of what I REALLY need to make sure I know.
Im goin over it all over the next 4 days but I need a guiding hand!

subway_ie

Im finding it totally impossible to study for phsyics or applied. Totally wasted all of the day today. Need to get some serious revision done - I've forgotten everything already. Haven't done physics in about 3 weeks...

Lyconix

Originally posted by subway_ie
Im finding it totally impossible to study for phsyics or applied. Totally wasted all of the day today.

I'm having the same problem... Physics is my last exam, and it feels like I've hit the holidays already. The thought of getting back to the books is not pleasant...

DS

The only thing I've done since the 8th of June is learn some proofs for Maths 2. Wasted today aswell. And I'm having the same pep-talk with myself that I did last night. And I know it's not working. I stopped caring after English, with all the hype gone, and nothing left but a choice between a desk and a couch in front of the TV. "Pff, what's ONE more night's study gonna do anyway?":rolleyes:

Smellyirishman

Ye same here, but iv had that feeling...oh since semptember!

Really gotta do some work tomory tho so if you guys see me on here b4 about6 tell me to FuK off!

senordingdong

Yeah seriously though.....Physics pointers are much needed. Soon.

subway_ie

Originally posted by senordingdong
Yeah seriously though.....Physics pointers are much needed. Soon.

Well, you can probably leave out last years pracitcals, in section A at least. You know that the option is a definite question. And that's about it really. There's nothing else to "predict". Know your practicals really, really well. Be able to use formulae, have all the definitions off. Understand concepts (Doppler effect, photoelectric effect, etc). Circular/Simple Harmonic motion seems like a big possibility this year - planetary motion, Keplers laws, geostationary orbits, all that kind of thing.

Chris_533976

The hell with the Leaving Cert, check out some of my third year college honours physics papers from this year

Mechanics Page 1
Mechanics Page 2
Mechanics Page 3
Mechanics Page 4
Mechanics Page 5

Quantum Page 1
Quantum Page 2
Quantum Page 3

Optics Page 1
Optics Page 2
Optics Page 3

Thermo Page 1
Thermo Page 2
Thermo Page 3
Thermo Page 4

Problem Paper Page 1
Problem Paper Page 2
Problem Paper Page 3
Problem Paper Page 4

The Leaving Cert is nothing.

subway_ie

Originally posted by Chris_533976
The hell with the Leaving Cert, check out some of my third year college honours physics papers from this year
The Leaving Cert is nothing.

Yeah, try showing leaving cert physics exam papers to a 2nd year and see how they deal with it...

SeanPuddin

yea man go suck your dick

Smellyirishman

No work done today again! damb why cant I just do any work!

Gotta get all the experiments down by mon and get some formula learnt, like I said I JUST NEED TO PASS! god dambbit if they dont pass me ill rip out thier nut sacks, then I gotta cram for chemistry! am I an idiot!

I can deal with the worded questions in physics, its the equations that I blow at :' (

subway_ie

Originally posted by SeanPuddin
yea man go suck your dick

If we really wanted to be bitchy, we could comment on how he's had to resort to UCC ... But we don't, so we won't.

munkeehaven

UCC is a great college----;) generally most irish colleges seem alright--the ones i have visited---lets not be parochial now.....

oeNeo

A quick question

You know for Cockrofts experiment where they shoot protons down the tube and into the lithium target? On 2002 it asks you tooutline this experiment. I just wanted to know, is it okay if you draw and label a diagram or do you have to write down the steps they went through as well?

subway_ie

Originally posted by oeNeo
On 2002 it asks you tooutline this experiment. I just wanted to know, is it okay if you draw and label a diagram or do you have to write down the steps they went through as well?

Outline = draw diagram, label it, and give an outline of the steps taken - bullet points, say how they did it (high voltages, plates, scope, etc) and what the result was.

oeNeo

Hairy muff. Cheers big ears.

nesthead

i heard that its a certainty that particle physics/applied electricity will come up on the paper. some department official told my teacher that the options would be on the first 3 years of the exam.

just a notion anyway