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EDEXCEL JANUARY 2015 PHYSICS DISCUSSION Unit 4
- Thread starter Amsal1998
- Start date
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- 143
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It was hard.
Could do well.
paniced alot. Forgot all i knew
Could do well.
paniced alot. Forgot all i knew
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Was good. Confusion with a couple of answers. what was the minimum energy for the production of the positron electron pair? And what was the change of velocity?
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1.63x10^-13 J
Change of velocity was 19.2 ms-1
it was a incredibly easy compared to previous papers, which only means the grade boundaries will be pretty high
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Are you sure about the answers? I had the same answers but they felt too easy to me. Like 3 marks for just using pythagoras's formula and another 3 for using e=mc2?1.63x10^-13 J
Change of velocity was 19.2 ms-1
it was a incredibly easy compared to previous papers, which only means the grade boundaries will be pretty high
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- 10
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- 7
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- 13
im 100% positive regarding the electron-positron pair, you can double check in wikipedia too
about the velocity, i think it's 2 marks for finding the velocity and 1 mark for the direction.
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thanks mate! its such a relief! then it really was a very easy exam. grade boundaries gonna be really high. Not surprised that they chose to put in an easy exam after the horrific paper they put in in june 2014. but maybe a little too easy. anyways, cheers!im 100% positive regarding the electron-positron pair, you can double check in wikipedia too
about the velocity, i think it's 2 marks for finding the velocity and 1 mark for the direction.
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The grade boundaries will be something like 96 UMS if you get 75/80 for this one.
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Yea me too got the same answers for these questions>>>1.63x10^-13 J
Change of velocity was 19.2 ms-1
it was a incredibly easy compared to previous papers, which only means the grade boundaries will be pretty high
the exam was easy compared to some past papers!
I wanna ask u guys what did u get the maximum emf induced in the motor question?
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I don't exactly remember but you had to use the gradient of a drawn tangent where the graph is at its steepest to find the emf.
What did you get?
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i got 20
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i got 8V, I got the maximum change of flux which was 4x10-3
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what did you guys write for the magnetic field 4 mark question (Large hadron collider)
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same here!got 8V.
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that ppr was not thattt easy it was okay
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my 15 max would get deducted
really worried
really worried
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Paper wasn't that easy. The past papers were much easier, comparatively. I got the same answer for Velocity, Emf and Energy.
Anyway, hoping for the best.
Good luck for the other exams.
Anyway, hoping for the best.
Good luck for the other exams.
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How do we do that electron positron pair anyway?im 100% positive regarding the electron-positron pair, you can double check in wikipedia too
about the velocity, i think it's 2 marks for finding the velocity and 1 mark for the direction.
I wasnt sure.
what formula do we have to use there?
E=1/2 mv^2 ??
I did same thing but idk... while walking out of the exam room my teacher was like you had to *2 the answer.
The question with that plane and the angle I messed up the last part.
Overall I got surprised only few theory questions it was full of calculations.