Edexcel Unit 4 (IAL): Physics on the Move, January 2016

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Ashley_01
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Hey Guys, How are you all?

January exams are just around the corner, and I didn't see any Unit 4 Jan 2016 thread yet. So hopefully we all can discuss it here.

So.......how well are you prepared for the exams? Which topic do you find the toughest? I hate Electromagnetism xD

Feel free to post your doubts here and have a nice day
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Ashley_01
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I got a C grade sadly so giving AS units as well.
wbu?
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reefy15
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Hi
"Two parallel wires attract each other if they are carrying current in the same direction."
Can anyone explain why?
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hank_the_tank
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(Original post by reefy15)
Hi
"Two parallel wires attract each other if they are carrying current in the same direction."
Can anyone explain why?
When a wire has current passing through, it produces a magnetic field.
So wire produces a magnetic field on each other.

When you have a current passing through a conductor in a magnetic field, there will be a force acting on the conductor. By using Fleming's left hand rule, you will figure out the direction of the two forces and they actually points towards each other, hence wires attract each other.

Please correct me if I'm wrong.
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alavisteam
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OK. So there was this MCQ on the large hadron collider
It
Says that large energy is needed to???

The answer is to create particles with larger mass
Can anyone tell me why???
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hank_the_tank
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(Original post by alavisteam)
OK. So there was this MCQ on the large hadron collider
It
Says that large energy is needed to???

The answer is to create particles with larger mass
Can anyone tell me why???
What are the other options?
What I knew is that the large energy is needed to accelerate the particles, as the particles gets faster and faster, their inertial mass gets larger (not exactly an increase in mass, but increase in inertia, and you now need more energy to accelerate it). So at the end you would need infinite energy to accelerate particles to speed of light.
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alavisteam
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(Original post by hank_the_tank)
What are the other options?
What I knew is that the large energy is needed to accelerate the particles, as the particles gets faster and faster, their inertial mass gets larger (not exactly an increase in mass, but increase in inertia, and you now need more energy to accelerate it). So at the end you would need infinite energy to accelerate particles to speed of light.
The other options were
A. To produce individual quarks
B. annihilate protons and antiprotons
C. Allow protons to collide with other protons
D.create particles with larger mass
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hank_the_tank
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(Original post by alavisteam)
The other options were
A. To produce individual quarks
B. annihilate protons and antiprotons
C. Allow protons to collide with other protons
D.create particles with larger mass
hmm.. well personally i would say the large energy is used to accelerate the particles in LHC. But if I choose one I would pick A , to produce individual quarks. Scientist used huge amount of energy to accelerates particle to almost speed of light, so that when it collides, it has an great impact force and split the internal elements of an particle.

But as you said the answer is D, I really don't understand what it means. Does it mean something like nuclear fusion (creating particles with larger mass), or like i said accelerate particles so that they have larger relativistic mass
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alavisteam
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(Original post by hank_the_tank)
hmm.. well personally i would say the large energy is used to accelerate the particles in LHC. But if I choose one I would pick A , to produce individual quarks. Scientist used huge amount of energy to accelerates particle to almost speed of light, so that when it collides, it has an great impact force and split the internal elements of an particle.

But as you said the answer is D, I really don't understand what it means. Does it mean something like nuclear fusion (creating particles with larger mass), or like i said accelerate particles so that they have larger relativistic mass
To produce individual quarks seems logical BUT
quarks can't exist on their own
They either exist in pairs (meson) or
Triplets(baryons)
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hank_the_tank
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(Original post by alavisteam)
To produce individual quarks seems logical BUT
quarks can't exist on their own
They either exist in pairs (meson) or
Triplets(baryons)
oh Yea you're right. They attempt to split everything but they can't see individual quarks. Sorry about that
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Student403
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Hi everyone

How is your revision going?
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ElvishJumpSuit
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(Original post by reefy15)
Hi
"Two parallel wires attract each other if they are carrying current in the same direction."
Can anyone explain why?
I Just uploaded a video walkthrough of the paper, with that question on it, to my YouTube Channel (Jan 2012 Physics On The Move)

https://www.youtube.com/user/ElvishJumpSuit

There are several others there too for U4 and U1 (old course)

Enjoy
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senshi1
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hey i want an advise about the good books to refer i actually have 3 book but which one is the best to get good grades
the book are hodder and student book and advanced physics for you ....\
so plz can anyone help
thanks
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senshi1
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(Original post by hank_the_tank)
oh Yea you're right. They attempt to split everything but they can't see individual quarks. Sorry about that
plz can u help me
which book is the best book
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hank_the_tank
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(Original post by senshi1)
plz can u help me
which book is the best book
Umm personally Im using the Students Book published by edexcel, coz i think the syllabus they cover would be exactly that covered by the edexcel examination. But you should also read others to see if there are additional information that Students Book didnt mention, it would be an advantage of you to read more than one textbook tbh
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senshi1
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(Original post by hank_the_tank)
Umm personally Im using the Students Book published by edexcel, coz i think the syllabus they cover would be exactly that covered by the edexcel examination. But you should also read others to see if there are additional information that Students Book didnt mention, it would be an advantage of you to read more than one textbook tbh
ok thnx bro
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Student403
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Why are the grade boundaries so high wtf? Compared to units 1 and 2
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TheGuyWhoPhysics
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(Original post by Student403)
Hi everyone

How is your revision going?
**** lol FML :L
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Student403
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(Original post by TheGuyWhoPhysics)
**** lol FML :L
Eugh same - good to know you're taking it though
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TheGuyWhoPhysics
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(Original post by Student403)
Eugh same - good to know you're taking it though
how are you 403 ?, long time no speak
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