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Chemistry Paper 8, and Physics paper 8 help and revision

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lets wait n seee.... u never know how much dey will give u ;)
m done wid Unit 4s in Jan already.... n Units 5's :eek: :p
wat abt u?
no i told u i jst started my A2 in feb ths year nw im doin the unit 3 and all A2 units and how was ur unit 4 cuz i fel its tougher than unit 5 ryt?
 
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no i told u i jst started my A2 in feb ths year nw im doin the unit 3 and all A2 units and how was ur unit 4 cuz i fel its tougher than unit 5 ryt?
ahan i see :)
umm... i dunno... the Unit four is harder for Physics i feel, but Chemistry is easier...
Bio is the same hell either way >.<"
 
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ahan i see :)
umm... i dunno... the Unit four is harder for Physics i feel, but Chemistry is easier...
Bio is the same hell either way >.<"
ya bio is hard and unit 4 is hard in phy i kno unit 5 is easier btw how was ur grade in unit 4 phy and did u do yr 13?
 
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ya bio is hard and unit 4 is hard in phy i kno unit 5 is easier btw how was ur grade in unit 4 phy and did u do yr 13?
bio is :mad: :|
i got As for Phy chem n bio but C for C4 :cry: :p
nopes! m finishing my A levels in 12 years :)
 
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i see...
same feeling here ^_^ :D
heyy im sry for disturbing u im really depressed for the unit 6 paper and cnt prepare 4 the other units.. so in the last que whn they askd whythe graph shld be a straight line i wrote tht bcz they r directly proportional 2 each other and obeys y=mx+c is tht correct? and whn they askd abt the diode diagram i jst drew it in a beaker of water and a bunsen burner down the beaker and smethng like why diode can conduct i wrote tht bcz conduction electrons can flow so i was wondering if my answers are correct? and thnx alot :)
 
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line thingy.... yup
i drew da same but i dunno...
m cant remeber the current question sorry!
n its okay ur welcome :)
 
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heyy im sry for disturbing u im really depressed for the unit 6 paper and cnt prepare 4 the other units.. so in the last que whn they askd whythe graph shld be a straight line i wrote tht bcz they r directly proportional 2 each other and obeys y=mx+c is tht correct? and whn they askd abt the diode diagram i jst drew it in a beaker of water and a bunsen burner down the beaker and smethng like why diode can conduct i wrote tht bcz conduction electrons can flow so i was wondering if my answers are correct? and thnx alot :)

For the line question, after you draw the graph it sould be fairly obvious that the y intercept isn't 0. so since this is a straight line, it has to be in the form y=mx+c
For the diode question, you should put the diode in a tight heat conducting metal jacket, and then just slightly place it in the beaker of hot water, using a stand, to make sure the wires don't fall in the water.
And for the last question, well I don't remmember it lol.
Hope I've helped =)
 
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For the line question, after you draw the graph it sould be fairly obvious that the y intercept isn't 0. so since this is a straight line, it has to be in the form y=mx+c
For the diode question, you should put the diode in a tight heat conducting metal jacket, and then just slightly place it in the beaker of hot water, using a stand, to make sure the wires don't fall in the water.
And for the last question, well I don't remmember it lol.
Hope I've helped =)
thnx alot bt i drew the diode i guess incorrectly cuz i used a stand to handle the diode in a beaker placed on a tripod stand and for the graph que ther wrote it shld pass frm the center bt it was fr y-intercept i got tht bt for the que my ans was they r directly proportional to each other and they obey y=mx+c the only thng im so depressed off was wien's law i drew straight lines instead of curved lines im imagining how mny marks i've lost in tht and wat marks i've lost for the other questions which i don kno:( so how mny A levels do u take?
 
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It was pretty fine. Each paper had a question with high difficulty, so I'm pretty sure I'll loose some marks there, but nothing life threatening hopefully, let's pray we all do well, inshalllah.
 
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It was pretty fine. Each paper had a question with high difficulty, so I'm pretty sure I'll loose some marks there, but nothing life threatening hopefully, let's pray we all do well, inshalllah.
Inshalla :)
 
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It was pretty fine. Each paper had a question with high difficulty, so I'm pretty sure I'll loose some marks there, but nothing life threatening hopefully, let's pray we all do well, inshalllah.
ok i have a que in unit 4 if ur taking it nw i hope u can help me. Mains-operated power supplies have large-value capacitors to help keep the output voltage constant. In a full-wave rectified supply, without a capacitor the output falls to zero every 10 ms. If the output must be maintained at a value at least 90% of its maximum value when a load of 1.0 Kilo ohm is connected to the output terminals, show that the minimum capacitance needed in the power supple circuit is about 100 microF.
 
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umm ok, just give me 2 days cause I'm preparing for mech II at the moment, Ill help you as soon as I finish my mech exam. I don't remmember unit 4 that much lol.
 
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umm ok, just give me 2 days cause I'm preparing for mech II at the moment, Ill help you as soon as I finish my mech exam. I don't remmember unit 4 that much lol.
ya sure btw how was ur unit 4 cuz i fel its a bit tougher than unit 5
 
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umm I think they are both on the same level, although unit 5 should be slightly harder than unit 4
 
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