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AQA PHYA4 ~ 13th June 2013 ~ A2 Physics

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Reply 660
Original post by oli_G
I got more than 0.26 as VsIsVpIP<1\frac{V_sI_s}{V_pI_P} < 1


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I also got that, 460 and more than 0.26 right?
Reply 661
Am I the only one who put 2.62 radians for the conversion from 150 degrees? 1 radian is 57.3 ish so I divided 150 by 57.3 and got 2.618 something.. Probs wrong
Reply 662
I got u move the rod vertically and blv
Reply 663
In section A, did anyone else get 1/3 for the ratio d/y?
Reply 664
Original post by fizzbizz
12000ns (b) for question 2 about momentum?


20,000n

8000 kg x 2.5 = (12,000+8000) x 1
Original post by The H
In section A, did anyone else get 1/3 for the ratio d/y?


Yeah

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Reply 666
Original post by fizzbizz
The moon is pea size compared to the Sun, surely the sun would give a larger force?


I got E>S>M..


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Original post by cooldudeman
I thought moon would be more than sun since the moons distance was smaller than sun's

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Original post by The H
Depends how far away the sun is though doesn't it


They gave the values in the question so I presume you can use them to work out the value of g . I did this and the sun had a larger value than the moon
Reply 668
would the sparks be brighter for the capacitor question?

I put that although energy stored would be greater, it wouldn't be brighter as the energy would just last longer instead
Original post by The H
In section A, did anyone else get 1/3 for the ratio d/y?


Yeah but slightly guessed that
Reply 670
Original post by Dirtybit
They gave the values in the question so I presume you can use them to work out the value of g . I did this and the sun had a larger value than the moon


I didn't get that question, it asks for gravitational strength on the satelitle, but it only gave distances from the earth to the sun/moon

it didn't give the distance from the earth to the satellite

I guessed B in the end, thats wrong isn't it?
Reply 671
Original post by Dirtybit
They gave the values in the question so I presume you can use them to work out the value of g . I did this and the sun had a larger value than the moon

I got larger for moon
Reply 672
Original post by MSI_10
20,000n

8000 kg x 2.5 = (12,000+8000) x 1


The question asked for the change in momentum of the 8000 kg truck, so the momentum before was 20,000 and the final was 8,000 giving a change of 12,000
Reply 673
Original post by bean595
did anybody get 150 degrees and pi/3 for 5a?

it was rotating anticlockwise not clockwise so the answer was 60
Reply 674
Original post by CR95
am i right in saying they only look at that red sheet you filled in for section A and not the question paper?


???/
Original post by Jack93o
I didn't get that question, it asks for gravitational strength on the satelitle, but it only gave distances from the earth to the sun/moon

it didn't give the distance from the earth to the satellite

I guessed B in the end, thats wrong isn't it?


Probably said the sattelite was near the earths surface
Reply 676
oh yeah, for the induced emf graph, everyone started off at zero, right?

but did you draw it sloping up (to the positive part of the y-axis) in the first quarter of a cycle?
What did people get gor yhe number of revolutions in a minute on the last question?

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Reply 678
What did everyone get for question 24 on the multi choice about the rod moving in a magnetic field?
Reply 679
Original post by cooldudeman
What did people get gor yhe number of revolutions in a minute on the last question?

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1500?

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