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OCR Physics A G484 - The Newtonian World - 11th June 2015

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You don't have long... though that being said I've still yet to do all of the past papers for my hardest exam (FP2), but otherwise I've done them all for every exam that I'm sitting.

I have 4 exams over the next 3 days so I can't do FPFP now. I'm just gonna cram massively. I basically understand all the stuff already, just got to fine out the edges, so to speak.

Reply 761

L'Evil Fish

Original post by Elcor

I have 4 exams over the next 3 days so I can't do FPFP now. I'm just gonna cram massively. I basically understand all the stuff already, just got to fine out the edges, so to speak.

I think you'll be surprised by the past papers! They're much much easier than I thought they would be

Reply 762

jeopardy

Original post by L'Evil Fish

I think you'll be surprised by the past papers! They're much much easier than I thought they would be

57,000 posts?

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Reply 763

Elcor

Original post by L'Evil Fish

I think you'll be surprised by the past papers! They're much much easier than I thought they would be

That would be nice! I've already done 5/8 of them, but only once each.

Reply 764

L'Evil Fish

Original post by jeopardy

57,000 posts?

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Well done you can read :yy:

Original post by Elcor

That would be nice! I've already done 5/8 of them, but only once each.

Oh I thought you hadn't done any?

Reply 765

Raizel

Unit 4
http://www.mathsmadeeasy.myzen.co.uk/a2-physics-ocr/G484-Physics-Newtonian-World-Notes-OCR-Robbie-Peck.pdf
https://b1a3c7824d6ff508e2bd2668b57bcac540764bbe.googledrive.com/host/0B1ZiqBksUHNYa1dha1BqWUwyanc/Definitions%20-%20Unit%204%20OCR%20Physics%20A-Level.pdf

Unit 5
http://www.mathsmadeeasy.myzen.co.uk/a2-physics-ocr/G485-Physics-Fields-Particles-and-the-Frontiers-of-Physics-Notes-OCR-Robbie-Peck.pdf

Reply 766

Elcor

Original post by L'Evil Fish

Oh I thought you hadn't done any?

I just haven't started my one-after-the-other-after-the-other until my mental health is destroyed technique.

Reply 767

MO2898

Original post by Makashima

Explain why the circular motion of the conical pendulum has the same frequency as a simple pendulum ?

Any takers

Can you use units (dimensional analysis) to prove this? If so then I think I have an answer:

Edit: I'd then K.O. that with a statement like "therefore, when both pendulums having the same length are in a gravitational field of the same strength, the frequencies of both would be identical".

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(edited 8 years ago)

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Reply 768

shorty.loves.angels

Original post by Makashima

Explain why the circular motion of the conical pendulum has the same frequency as a simple pendulum ?

Any takers

As ^

Think about what frequency is dependent on and then relate that to simple/ conical. You should find that both have the same dependency

Reply 769

Jmw123

Anything like this for G484? http://www.thestudentroom.co.uk/showthread.php?t=2715379

Reply 770

Elcor

NASA thing about to launch live for all you physics nerds:
http://www.iflscience.com/space/here-s-how-watch-nasa-s-flying-saucer-test-launch

This counts as revision

Reply 771

Makashima

internal energy, the sum of the KE and the PE

in an atom
in a body
in a object

which one???

Reply 772

Jim997

Original post by Makashima

internal energy, the sum of the KE and the PE

in an atom
in a body
in a object

which one???

In a system ?

Reply 773

dudeman1

Original post by Makashima

internal energy, the sum of the KE and the PE

in an atom
in a body
in a object

which one???

all molecules in a body

Reply 774

saeed97

Any people have a complete definitions document for g484 (and g485) that they could share with a brother?

Reply 775

Leechayy

Assuming an experiment comes up, what experiments are there? :confused:

Minus the s.h.c of a solid/liquid as it came up last year

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Reply 776

fernmaddison

why is the gradient of a substance with a greater shc steeper?

Reply 777

Jim997

Original post by fernmaddison

why is the gradient of a substance with a greater shc steeper?

For a temperature time graph 1/gradient is the shc!!

Reply 778

MO2898

Original post by fernmaddison

why is the gradient of a substance with a greater shc steeper?

Depends for which graph.
Specific heat capacity is the energy required to change the temperature of one kilogram a substance by one kelvin.
If it's a Temperature against Energy (or equivalent) graph then the gradient will be steeper because each kg of that substance needs more energy to heat up, compared to a substance of lower SHC.

Mathematically:
dE = m c dT
comparing with y=mx+c,
y-axis is Energy and x-axis is temp., so gradient is mc (mass times SHC)