IGCSE/GCSE/O & A Level/IB/University Student Forum
Qualification => Subject Doubts => IB => Sciences => Topic started by: applepie on May 15, 2009, 02:02:30 pm
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hey guys a2 physics p5 is on the 2oth!!!!!!!!!!
ne predictions?????
those whu finish it da earliest, kindy breiff us on it!!!!!!!!!
i reallyyy needd this!!!!!!!!!! :( :( :( :( :( :( :( :( :( :(
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Gee apple pie...u seem desperate. Did u even have a look in the booklet (i sent a link for it!!) ??
Which country u in?? Others will just be able to brief the paper, rest is up to u !
Check out the last pages in the booklet...cos chances are that some experiments given there will come in question 1.
In fact one example already came in question1 O/N 08 paper 5!!! ;D
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is the link u relating to the booklet of y_07..something like that ..dont u have the latest one..
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Dude...thats the latest one u can ever get...they haven't changed the syllabus since 2007!!
If u want specimen papers then get them of the download site :www.freeexampapers.com (http://www.freeexampapers.com)
Hey which city u in india??
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mumbai........
what abt u? ???
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Ahmedabad :P
I didn't know mumbai students would come for help here!!
I thought there are amazing schools there! Which school u in? Which subjects u giving?
What other problems u got with paper 5??
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ya ther are some gud skools but it all depends upon the teacher and how they communicate with us..
we got a 60yr old professor who cant speak properly and never listens to us...he thinks we know everything......
well in p5 basically i get confused on q1..the thought experiment...mainly on how to prove or the relations with the right kind of graphs...and the diagrams to an extent....and in q2 the last 3-4mrk question..sometime it gets hard to relate...
well u seem quite confident...how r ur preparations goinn on n from wher r u studin???
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lol :D
I'm external student! What did u get in AS level physics!
By the way i'm not confident...i'm sorta repaired for paper 5 and still want to know what will come b4!!
See for question 1 and 2 check out the booklet...u know 1 example exp. from there came in q1 O/n 08 paper5!
u could also see http://www.rit.edu/cos/uphysics/graphing/graphingpart1.html#Glossary (http://www.rit.edu/cos/uphysics/graphing/graphingpart1.html#Glossary) for q 2-but some stuff in this link is not needed! There are specific requirements in answering q1 do u know 'em?
What other subjects are u taking?
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Hey mac
is dat da link for da booklet...n if nt can u plz tel da site..if a ? was repeated den obviously this will help us..
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anyone knows where can i get mark scheme for practical papers unit 5 for 2005-2009?i have searched in freeexampapers website there is only for january 2008.where are others?i need to do some revision.please help!!!
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anyone knows where can i get mark scheme for practical papers unit 5 for 2005-2009?i have searched in freeexampapers website there is only for january 2008.where are others?i need to do some revision.please help!!!
try extremepapers.com...somewhat like that..google it
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lol :D
I'm external student! What did u get in AS level physics!
By the way i'm not confident...i'm sorta repaired for paper 5 and still want to know what will come b4!!
See for question 1 and 2 check out the booklet...u know 1 example exp. from there came in q1 O/n 08 paper5!
u could also see http://www.rit.edu/cos/uphysics/graphing/graphingpart1.html#Glossary (http://www.rit.edu/cos/uphysics/graphing/graphingpart1.html#Glossary) for q 2-but some stuff in this link is not needed! There are specific requirements in answering q1 do u know 'em?
What other subjects are u taking?
well i m takin entire bio and phy alevels in this session n chem and eng in oct/nov!
thanks for the link..
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huh.not much help.i cannot find any.please help.
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huh.not much help.i cannot find any.please help.
here u go
http://www.planet-master.com/cie.html
and its xtremepapers.com
both r the same
gud luck
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actually i want marking scheme for edexcel physics practical unit 5 from year 2005-2009.sorry not telling you earlier.anyone knows where can i get it?
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Posted by: dush
Hey mac
is dat da link for da booklet...n if nt can u plz tel da site..if a ? was repeated den obviously this will help us..
lol...huh...now u guys will start looking at the booklet just cos of repeats...not for the sake of understanding!! :D
Well look for the booklet in this thread, i have put up a link: https://studentforums.biz/index.php/topic,1293.0.html (https://studentforums.biz/index.php/topic,1293.0.html)
And next time...whoever made this topic.....just use one thread for that topic, people will get confused which one to use or is popular!! K :P
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actually i want marking scheme for edexcel physics practical unit 5 from year 2005-2009.sorry not telling you earlier.anyone knows where can i get it?
https://studentforums.biz/index.php/topic,73.0/prev_next,next.html#new
try it out
hope it helps
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guyz nybody ..can xpalin da 2nd ? phy p5 mayjun 2004..? i am a bit confused on where 2 use da hall probe..ny idea abt da diagram n da procedure....
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guyz nybody ..can xpalin da 2nd ? phy p5 mayjun 2004..? i am a bit confused on where 2 use da hall probe..ny idea abt da diagram n da procedure....
dude, I don't know if you are aware of that, or if you are doing 2004 just for practice, but the syllabus changed in 2006 or 2007 not sure. better do the most recent one, aswell as the specimen
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yes but the q2s of 2001- 2006 paper5 are similar to question 1 of nowadays paper5s!!
Now they mostly provide an equation (but dunno if they will this time :-\) ; back then they didn't, but the diagram, procedures, safety prec. and additional details (good design features) were/are still needed.
So it might b helpful if v look at those too, they may repeat something... ;)
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anyone knows where can i get mark scheme for practical papers unit 5 for 2005-2009?i have searched in freeexampapers website there is only for january 2008.where are others?i need to do some revision.please help!!!
you can get them for blackpapers.info or www.students-resource.com....hope it will b helpful
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So guyz da ans 4 ma ?..nybody got an answer.. da marking scheme dst help..difficult to understand+no diagram..so if u guyz got ny idea ..let me no..thx
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So guyz da ans 4 ma ?..nybody got an answer.. da marking scheme dst help..difficult to understand+no diagram..so if u guyz got ny idea ..let me no..thx
http://www.srepapmaxeeerf.com/A%20Level/Physics/CIE/Resources/9702_y07_ps_5.pdf...check this...and give more attention to page 40 and onwards...all exprmnts.....mayb one of them is in our exam on 20th....lol....
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hey, could u please post the pattern for answering q1 of paper 5... it was posted earlier in a thread by either evildevil or applepie.. someone from mumbai i remember... so please help me out in this part :( .. hafzamajeed@gmail.com
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Hey, any news on paper5??
I'm sitting for it tmrw..Would really appreciate any sort of help! email me at ooiwx@hotmail.com
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Heyyyyy plzzzz....i am goin to sit for A2 physics paper 5....any leaks...or guesses...plz post them...i am goin to sit at 2 30 pm...i am sure some one might be sitting before us PAKIS....plz help...
would definitely appreciate..it ??? ??? ???
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no v r d 1st 1z 2 b sacrificied...lolx
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is pakistan the first place where the cie exam takes place???
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no...find some ppl takin exmz in New zealand and malaysia....new zealand is da first where they take exmz...fynd sm1 who cn help us....:P
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new zealand provides us wid round bout 12 hrs nd malaysia gives 8 hrs.....its a hell lot of tym to HELP!! :)
ANY ONE FROM MALAYSIA or NEW ZEALAND ALIVE?
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How do you calculate the absolute errors in the second question of p5 and how do you draw the worst acceptable line?
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open this and check dat...start reading from half page 20-22
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Thanks bud.
(:
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Ok man this is how you go
in question 2 p5
suppose
I/V V/V lg(I/I) lg(V/V)
2 4+/- 0.1
3 7+/- 0.1
you can simply calculate values of Log I example log 2 =0.301 write it in the column
lg(I/I)
for log V you calculate value Log V example log 4= 0.602 write it in the column under lg(V/V)
absolute errors in lg (V/V):
error in V/V is +/- 0.1 thus absolute error in lg (V/V) would be *
take the first value in the group V/V which is 4
(log 4) - (log 3.9) = 0.01 to 1 sig fig
or
(log 4.1)- (log 4) = 0.01 to 1 sig fig
note that 3.9 or 4.1 value comes from subtracting or adding 0.1 from actual value which was 4 see column above of V/V
both ways are correct
same for the second value 7 +/- 0.1
log 7.1 - log 7.0
or
log 7 - log 6.9
another example
100 +/- 20
you do for absolute errors
log 100 -log 80
or
log 120 -log 100
just remember to either add or subtract the error from actual value
tricky
if its square of distance
suppose d/cm = 2 cm+/- 0.1
the errors in "d square world be"
(2.1 square ) - 2.0 square
or
2.0 square - 1.9 square
this would give you error
in this case d square = 4+/-0.4
hope it solves it all for every one
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I/V V/V lg(I/I) lg(V/V)
2 4+/- 0.1
3 7+/- 0.1
another way of calculatin the errors is :
lg 4 = 0.602
take (lg 4.1 - lg 3.9)/2
this will give error +/- 0.01
this is easier and faster method
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the method is same just a small tweak with the rule
just remember to take into account the upper and lower limit ;)
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yeah well the tweak really helps you, when you're runnin short of time 8)
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man are there any chances of a paper being leaked out ?
:-\
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the odds don't seem favourable so far
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wait for malaysia n newzealand thn... :d
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Great! Thanks Taha. I totally got that.
:)
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No news yet?
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anybody there
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??? :-\
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i'm writing it in 30 min.. wish me luck
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Good luck
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evry1 best of luck
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hey..when we r plotting the graph with the error bars the points shud be circled or shd we use crosses or just plain points?
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little cross at the coordinate, the circled it. Error bars should be a line
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was easy
but i messed it up anyway -_____________-
its of oscillations.
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physics p2 i got fked up!
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physics p2 i got fked up!
can you give any hint?
answer please at tifas1991@gmail.com
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im so stupid i didnt multiply by 10 to the power -5!...bad paper
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what?? why? and where? I have done the paper it was ok....
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physic paper 2..it quite easy paper...just do the past year papers...
so weird this time cie give an easy paper..
i think paper 1 will be v difficult...
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ye but the grade thresholds are gonna be at maximum this time...and they would know about the leaks too!
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leaked paper???
really?
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no i'm just guessing...dunno if it was leaked....but ppl are posting guess on lots of forums so...might be any paper is leaked
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yea..especially the kirchcoff law...everyone said the it will come out...
maybe just prediction..
xcept for practical..
sure leaked one...
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it came.........3 marks question
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it was an ok ppr.. except i didnt know the "e".. my answer is 2e , e and 1/2 e
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it wz tat where da springs were parallel we had to add them like v do wid resistors in series and when they springs were in series v have to do like v do wid resistors in parallel....100% right
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da Q1 of P5 was same as p5 in 2005...except then da p5 wz a practical and now its written and dey used da steel ruler than and now they used the wood ruler
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p5 was kinda ok....minimum 25/30.. ;D
By the way the gradient shud be multiplied by 10^5
and did anyone get their y intercept positive???then its WRONG 100% cuz the x-axis starts from 1.5...it doesnt start from zero...dats da only mistake i made.... >:(
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u had to use y=mx+c to fynd da y-intercept....now plx every1 stop posting in this topic paper still goin on many countries....so topic until atleast 6 hours
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Just wanted to know,
incase if anyone has any idea,
I wrote to answers for gradient, and i guess the right one is 1.29 x 10^5, and thats one of my answers.
So will i get the marks?
What did you people get the value for min force and the distance between the fringes?
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just wait for atleast 6 hourx b4 u get da answer.....
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Oh sorry, sh*t, i forgot that we werent suppose to give out the answers.
But just tell me about this,
that do we get marks if we write two answers and one of them is the right one?
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yea u get da marks but u lose da mark of da answer
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who has done physics p32 and math p3?
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guyz naveed1234 mentioned dat we had to multiply the gradient wid 10^5....i was abt to do the same thing in my paper but i think it is rong.....
U see....the table was smthng like this (i am not sure of the value but they were around the ones i rote)
(10^-5) ... lg d(10^-5) And to calculate gradient we had to subtract two lg d values(of course) and this value was the
31 1.49 denominator....any way the point is 1.49 - 1.15 = 0.34.............There is no need to do anything with
. 10^5.... i tell u why. if u use 31 X 10^-5 and use this full value to calculate its log, then it is -3.51 and
. similarly for for 14 X 10^-5 we get its log as -3.85. If we subtract the two...-3.51-(-3.85) we get the
14 1.15 same answer which is 0.34........
So dats why i THINK dat there is no need to multiply the gradient value wid anything....cuz we'll get the same answer either we use full value or the other. Anyway my gradient value was 1.27....and the constant p was smthng around 2.4 (and its postive) to get the value of p we had to do the inverse log of y-intercept......Neway.now next is Pure Mathemaics... :-\
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Yeah i totally agree wit M4@li...
They had mentioned (10-5) jus to confuse us...
Whoever used 10-5, has made a big mistake...
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ya me 2 ................i also agree , they made us confused . ....my gradient was also 1.27 ........most of the student wrote 10^5 with their gradient .........which is wrong ............but dont worry try to make ur next paper better.................. best of luck .
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:o OH CRAP!!!!!! Haha...u know when i calculated the gradient i ended up with ~1.27 and remembered about the o/n 08 paper since it had d^2/10^-4 on the y-axis. So in yesterday's paper i saw the lg(d/10^-5) in the graph's x-axis. Then i scribbled the gradient +/- error and put down 10^5 after the entire value of gradient!!!! Do u think they are going to penalize POT (power of ten)? In O/N 08 P5 mark scheme they say don't penalise POT! it will prob. b just 2-3 marks lost, right??? :-\
I really regret this now!!!! They def. would hav confused a lot of ppl who done the O/n 08 paper!
I shud have remembered that 0/n 08 paper didn't hav logs... :-\ :P :P
I hope Q1 takes care of this mistake!
Is the grade threshold gonna b higher this time?? In O/N 08 it was +22/30 for A!!!
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yeah... these cie ppl try to play evry trick in the book to confuse us....
anyway can smone tell me dat in the last part what were we supposed to rite the values of p and q....the value of q was the value of gradient itself which we calculated earlier or we had to do smthng else to obtain q....
The gradethreshold will prbly be arnd 23 this time...(most of my class mates including me found q1 easy...)
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yeh q was gradient and p was 10 inverse of the y-intercept cz the y-intercept was log p..and are u sure abt not ultiplying by 10 to the power of -5?
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yea it will around 20-23 cz Q1 wz ez and kinda some dificulty in Q2 but overall it wz ez...Q1 wz same like in M/J 05 P5 excpt P5 w a practical then and they used a steel ruler then
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yeah iz....i am sure that we didnt had to multiply the gradient with 10 to the power of 5 or anythng else.
Anyway it is over now....study hard for the upcoming exams.... ;D