OCR Physics A G484 Jan 2012 - The Newtonian World

I did for maths yesterday

I wasn't awake cause I didn't know much, i'm actually quite confident of this exam. Just worried I might forget stuff

For a question where the gravitational potential energy of a pendulum was given on a graph and it asked you to draw the kinetic energy curve and total energy... I drew the total energy line straight through the middle

One last question... what experiments do I need to know for the exam?

Does anyone have an idea of what could turn up on the exam
im feeling momentum and resonance/damping

One last question... what experiments do I need to know for the exam?

haha i did that question as a mock yesterday and was tempted to do the same, then I realised

One last question... what experiments do I need to know for the exam?

Does anyone have an idea of what could turn up on the exam
im feeling momentum and resonance/damping

I really wish you are true lol... I just don't want thermal physics to come up :P

an experiment that demonstrates Brownian motion and discuss the evidence for the movement of molecules provided by such an experiment:

Movement of smoke particles caused by being hit by randomly moving, different speed, air molecules
Smoke particles are constantly moving because the air particles are continuously moving
Smoke particles are visible but air molecules aren’t hence air molecules must be very small
Small movement of smoke particles is due to the large numbers of air molecules hitting from all sides


An electrical experiment to determine the specific heat capacity of a solid or a liquid:

Must show liquid in vessel with electrical heater with thermometer, ammeter and voltmeter
Measure mass of liquid, temperature change, values of I, V & t.
Rearrange E=mcΔθ
Identify uncertainties
Note ‘specific’ means ‘per unit mass’.

These are the only 2 listed in the spec i think but they can ask you to suggest others, like the angle against period one in june 11 or whenever it was

Haha, it's so wrong in every possible way! How can total energy be less than ANY other energy on the graph.

I'm just hoping that most questions on the paper are the general ones that we've been going over, and if there is anything hard that I get stuck on then it's just the one... or maybe two, but where I can get most the marks!!

Might be panicking more than I need to - the module just seems to have got more confusing the more questions I've tried I got enough marks for a C on the first practise paper I did WITHOUT revision... rarrrr.

Ok then, describe the effect of damping on the resonant frequency of an object AND the gradient of the peaks and troughs of the graph. <-- Just made this 1 up on the spot

Oh thermal physics is a whore =/


are these the correct equations
i know mass=mrxmol cuz i do chemistry but i get a lil confused

is number of particles/atoms = Avo number x mol?

Dude, what happend with the I and V in this experiment? I've not done G482, and although I'm vaguely familiar I could do with writing myself a quick mind map.

If I have to draw this I'm screwed as I don't even know what to do with the V.meter and A.meter

Can someone confirm these definitions are correct please

Latent heat of fusion - the energy required to turn a solid into a liquid

Latent heat of vaporization - the energy required to turn a liquid into a gas

Specific heat capacity - the energy required per unit mass of a substance to cause a raise in temperature of 1 K

Specific latent heat - the energy required per kilogram of substance to change its state at a constant temperature.