Physics Unit 2. How was it ???!!!

[alevel_help]

Are you actually retarded? Just accept the correct physics.

When the length was doubled and the cross sectional are was doubled okay. If the length is doubled there is twice the amount of charge carriers! Therefore I=nAvQ compared to new I=2n2AvQ therefore v is V/4

That would have been a harsh comment if you were correct, but the fact you are wrong makes it hilarious. Please keep entertaining us all.

 

[alevel_help]

hahahahaha charge density depends on material he wont admit it

Yep exactly.

 

[NiazK98]

I've some questions guys. Help me out here k?
1) What did you people gave the answer for MCQ No.3 about the phase difference?
2) What did you people write about that polarisation questions which talks about tilting your head?
3) The Last Question. Should the resistance Increase or Decrease? And how come its a 4mark question? :|

This paper was pretty easy but some of the questions were pretty tough i'd say. What do you think the grade boundary for A will be? I think 58-60.

 

[alevel_help]

I've some questions guys. Help me out here k?
1) What did you people gave the answer for MCQ No.3 about the phase difference?
2) What did you people write about that polarisation questions which talks about tilting your head?
3) The Last Question. Should the resistance Increase or Decrease? And how come its a 4mark question? :|

This paper was pretty easy but some of the questions were pretty tough i'd say. What do you think the grade boundary for A will be? I think 58-60.

I don't remember what I picked exactly but

1) Wave Y was pi/2 radians ahead of X
2) If you tilt your head the polariser begins to let oscillations in the other plain through, but it's not a 90 degree rotation so it's not maximum intensity, hence 'faint image'
3) I put resistance decreases because of the heating/ion vibration theory. I think the wording of the question was key in this one, it asked us how the low current effected the resistance, not the other way around.

 

[NiazK98]

I got all of them wrong. Thanks

 

[alevel_help]

I got all of them wrong. Thanks

Ahh don't worry about it man, im not sure if im right, honestly! Your answers may be right

 

[NiazK98]

Ahh don't worry about it man, im not sure if im right, honestly! Your answers may be right

I know i'm wrong. That is exactly why i asked this questions here. I hope the grade boundary is low even though the paper was relatively easy but its Unit 2. So hoping for the best.

 

[alevel_help]

I know i'm wrong. That is exactly why i asked this questions here. I hope the grade boundary is low even though the paper was relatively easy but its Unit 2. So hoping for the best.

Yeah I agree with you about the paper. It was relatively easy but like you say, Unit 2 is Unit 2 and notoriously hated by everyone, so hoping for decent grade boundaries. Maybe 55-57 instead of the usual 50/51 for June.

 

[Hamzeh S]

I don't remember what I picked exactly but

1) Wave Y was pi/2 radians ahead of X
2) If you tilt your head the polariser begins to let oscillations in the other plain through, but it's not a 90 degree rotation so it's not maximum intensity, hence 'faint image'
3) I put resistance decreases because of the heating/ion vibration theory. I think the wording of the question was key in this one, it asked us how the low current effected the resistance, not the other way around.

exactly what i said although (2) i phrashed it in a different matter some people disagreed about (3) but thats what i wrote

 

[Ayesha B]

the current for both lamps was different and in a series circuit the current is the same, one was 0.17A and the other lamp was 0.2A so i think the circuit is in parallal, well thats what i did

I know that's true but there wasnt that much of a difference and besides, if it was in Parallel, taking one lamp off wouldn't have affected the performance of the other AT ALL. Taking either lamp off actually meant the other one didnt work, which means u've broken the circuit somehow, and that's Series.

uhf lol idk we'll see when we get the MS

 

[Hamzeh S]

I know that's true but there wasnt that much of a difference and besides, if it was in Parallel, taking one lamp off wouldn't have affected the performance of the other AT ALL. Taking either lamp off actually meant the other one didnt work, which means u've broken the circuit somehow, and that's Series.

uhf lol idk we'll see when we get the MS

lol if they were parallel the current in the smaller lamp would be more than x100 the main bulb because it had a resistance of 12.5 and that one had 1322.5 or something its series

 

[aalmuhannadi]

beliv me, i did the exact same thing. wrote the exact same explanation.......what do u think, will we get ECF or how much mark wud we lose altogether here?

No I think they're assuming that the only right answer is the simpler answer of it being a series circuit so I think we're gonna lose all the marks for that question, no ecf, except for those easy 1 or 2 mark calculations that were at the end sadly

 

[sugoii]

i

For me yes it was corroded because the distance was 1.5cm instead of 4cm... let's hope I got that right at least

it was also 1.5 for me

 

[Belal Hussain]

Great am doomed, I got the Drift Velocity MCQ wrong i think and my answer for the corroded metal was 3.02cm

Few other questions were horrendous, i didn't answer one of the question about 3D effect. What am i going to do?

 

[Hamzeh S]

Great am doomed, I got the Drift Velocity MCQ wrong i think and my answer for the corroded metal was 3.02cm

Few other questions were horrendous, i didn't answer one of the question about 3D effect. What am i going to do?

ouch

 

[mohamad yassine]

there is no unofficial ms for physics or even chemistry???

 

[Hamzeh S]

there is no unofficial ms for physics or even chemistry???

usually nope

 

[Ayesha B]

lol if they were parallel the current in the smaller lamp would be more than x100 the main bulb because it had a resistance of 12.5 and that one had 1322.5 or something its series

yeah true that. yep I wrote series.