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# Edexcel Unit 4: Physics on the Move 6PH04 (11th June 2015) watch

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1. Do we need to cram quark structure for kaons, pions, omega, phi?

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2. how would u define magnetic field. has any one come across this question in a past paper? what was the mark scheme answer?
3. (Original post by bbyturtlexox)
how would u define magnetic field. has any one come across this question in a past paper? what was the mark scheme answer?
region around a magnet in which force can be experienced.
4. Anyone can explain the physics behind question 8?
5. (Original post by Amir52)
Anyone can explain the physics behind question 8?
Alpha and beta charges ring a bell?

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6. (Original post by physicsmaths)
Alpha and beta charges ring a bell?

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???? umm...I din't get your point
7. (Original post by bbyturtlexox)
how would u define magnetic field. has any one come across this question in a past paper? what was the mark scheme answer?
Area in which a moving charge feels a force

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8. Could someone explain the equivalency of ev, ev/c and ev/csq?
Thanks

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9. (Original post by Amir52)
region around a magnet in which force can be experienced.
I don't like this definition
10. (Original post by bbyturtlexox)
how would u define magnetic field. has any one come across this question in a past paper? what was the mark scheme answer?
Where an electric field affects charges, a magnetic field affects magnetic poles, A region of space which will cause a magnetic pole to feel a force is called a magnetic field.
(reliable because it's from the Edexcel textbook word for word)
11. A few people were discussing why the momentum was zero in the collisions question in Jan 2014 IAL. It's because they were asking if the proton is stationary. If a stationary object explodes, then the total momentum of all the shrapnel parts added up (taking account of the direction of their movements) must be zero. In physics terms, any such event with the initial momentum as zero is termed an explosion, although it may not be very dramatic.
Hope this helps. It's in the text book too, in the very first chapter
12. (Original post by Amir52)
Anyone can explain the physics behind question 8?
force for alpha = B*q*v
the charge for alpha is +2e and the charge for beta is -e
so force for beta = (0.5B)*(0.5q)*(10v)
0.5*0.5*10 = 2.5 so answer is C
13. This dude has a jackpot of the latest papers, found his blog randomly while searching for Jan'15 papers.
http://56leomessiphotoshop.blogspot....materials.html
14. (Original post by Hectors)
In the june 2014 IAL paper a mark is given for saying this.
Really? Maybe about the wording of the question look at June 13 R paper and jan 13
15. (Original post by bobo19966)
Quick question: Why is this not a valid conclusion on the Rutherford scattering experiment?

The nucleus is positively charged

In every single mark scheme this conclusion didn't credit marks
(Original post by Runner104)
yeah I noticed that too :/ maybe because they didn't know the charge of an alpha particle I'm guessing?
It's because the nucleus could be negative since the alpha particle might be deflected by more than 90 degrees if it is whirled around the nucleus (like a comet attracted to the sun and being pulled around due to gravity)

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16. Is N in flux linkage the number of coils or turns in a coil of wire (or is that the same thing)?

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17. (Original post by BP_Tranquility)
Is N in flux linkage the number of coils or turns in a coil of wire (or is that the same thing)?

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Turns in a coil, completely different.
18. (Original post by Ambrina)
Where an electric field affects charges, a magnetic field affects magnetic poles, A region of space which will cause a magnetic pole to feel a force is called a magnetic field.
(reliable because it's from the Edexcel textbook word for word)
Not saying your wrong but in the edexcel MS they just a region of space where a force is exerted on a moving charg or current carrying conductor (2 marks)

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19. (Original post by cerlohee)
Could someone explain the equivalency of ev, ev/c and ev/csq?
Thanks

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Anyone?
20. (Original post by cerlohee)
Anyone?
EV/c^2 is just rest mass, eV would then be the energy of that prticke abd not sure about /c one

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