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

laureeenk
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#1021
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#1021
(Original post by saeed97)
Maybe a brick this time? jk but good luck
They could throw worse things I'm sure... But thanks!
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boristeve
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#1022
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#1022
(Original post by [email protected])
Can anyone list all the bullet points for Brownian motion
and all the experiments we are meant to know#?
here you are pal;

1. air molecules are moving randomly
2. with different speeds
3. mass of air molecules is smaller than smokeparticles
a. (movement of smoke particles causedby being hit by randomly moving air molecules
b. smoke particles are continuously movingbecause the air molecules arecontinuously moving
c. smoke particles are visible but airmolecules are not hence air moleculesmust be very small.
d. small movement of smoke particles isdue to the large numbers of airmolecules hitting from all sides)
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seizetoday
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#1023
(Original post by boristeve)
there is no reaction force acting on the pilot from his seat. the pilots weight force supplies the necessary centripetal force for circular motion, so no reaction force = apparent weightlessness
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Exaltation
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#1024
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#1024
(Original post by Raizel)
I have some dead handwriting but here bro.
Nice Arabic

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laureeenk
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#1025
wordy questions on spec heat?
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Exaltation
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#1026
(Original post by laureeenk)
wordy questions on spec heat?
It came up last year so I doubt it'll come up this year. Probably a 6 marker on SHM

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Raizel
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#1027
(Original post by Exaltation)
Nice Arabic

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yeah man 3 hour Arabic exam tomorrow straight after g484.
and then I have to do a 2hour economics exams after Arabic.
FUNFUNFUN
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MathsAddict
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#1028
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#1028
Hardest thermal question i could think of :P specific heat capacity is 0.385 for this question good luck solving it
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[email protected]
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#1029
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#1029
(Original post by Exaltation)
It came up last year so I doubt it'll come up this year. Probably a 6 marker on SHM

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Has there been one previous?
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Exaltation
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#1030
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#1030
(Original post by Raizel)
yeah man 3 hour Arabic exam tomorrow straight after g484.
and then I have to do a 2hour economics exams after Arabic.
FUNFUNFUN
How difficult do you think it is to learn Arabic as a non-Arab? (I'm guessing you're Arab)

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Exaltation
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#1031
(Original post by [email protected])
Has there been one previous?
Yeah 6 marker on SHC of Oil last year

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Flux_Dubstep
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#1032
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#1032
when do you use pV=NkT as opposed to pV=nRT?
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Exaltation
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#1033
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#1033
(Original post by Flux_Dubstep)
when do you use pV=NkT as opposed to pV=nRT?
N is the Number of Atoms. n is the number of Moles

Correct me if I'm wrong

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firebaron999
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#1034
Hey guys does anybody have june 14 paper?
Id really appreciate it.
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BecauseFP
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#1035
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#1035
Just to double check, for Newton's law of gravitation, is the r term the distance between the centres of the objects or is it something else?
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[email protected]
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#1036
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#1036
(Original post by firebaron999)
Hey guys does anybody have june 14 paper?
Id really appreciate it.
Back a few pages
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[email protected]
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#1037
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#1037
(Original post by BecauseFP)
Just to double check, for Newton's law of gravitation, is the r term the distance between the centres of the objects or is it something else?
No that is it
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actanide
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#1038
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#1038
im 99% sure they dont accept spy for geostationary satellites but they do accept spy satellites for non-geostationary
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MathsAddict
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#1039
I just hope it isn't an awkward paper tbh i am comfortable when it comes to calculations
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[email protected]
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#1040
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#1040
Why is Keplers law according to June 2012 mark scheme

The cube of the planets distance (from the Sun) divided by the square of the(orbital) period is the same (for all planets) (WTTE)

Instead of T^2/R^3 = constant which is more clear from formula

Im aware it is just one over constant but just dont see the logic in writing it the other way round than in the formula books?
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