IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: hafza89 on June 07, 2009, 08:27:29 am

Title: Physics p1 questions! help
Post by: hafza89 on June 07, 2009, 08:27:29 am: guys please help me out
P1 physics november 2008 q 27, 32

q 27) a small microwave receiver is moved from T towards S. receives signals of alternate maxima and mininma intentsity. the distance between one maximum and the nest is 15 mm. what is the frequencey of the microwaves

A 1.0 x 10^7
B 2.0 x 10^7
C 1.0 x 10^10
D 2.o x 10^10
Title: Re: Physics p1 questions! help
Post by: hafza89 on June 07, 2009, 08:34:54 am: 32 An electric power cable consists of six copper wires c surrounding a steel core s.

1.0 km of one of the copper wires has a resistance of 10 ? and 1.0 km of the steel core has a
resistance of 100 ?.
What is the approximate resistance of a 1.0 km length of the power cable?
A 0.61 ? B 1.6 ? C 160 ? D 610 ?
Title: Re: Physics p1 questions! help
Post by: khuram234 on June 07, 2009, 09:59:12 am: Nice questions
Title: Re: Physics p1 questions! help
Post by: melodie_ on June 07, 2009, 01:41:27 pm: well i really don't think this question has anything to do with let's say diffraction, it's just about what the actual wavelength of a microwave is.. so, it's c :D
Title: Re: Physics p1 questions! help
Post by: AbuxaR on June 07, 2009, 04:05:16 pm: I think its either
A, B, c or D

!!!!! oh how genious i am !!!!! ;)
Title: Re: Physics p1 questions! help
Post by: khuram234 on June 07, 2009, 04:36:23 pm: AbuXar i was also thinking that it will be A,b,C or D oh man i m also a genious. 2 geniouses at one place oh my ghosh!!!!!!!
Title: Re: Physics p1 questions! help
Post by: siddiss on June 07, 2009, 04:44:56 pm: ??? are u guys smoking sumfing...lol
Title: Re: Physics p1 questions! help
Post by: hafza89 on June 08, 2009, 04:54:00 am: lol.. exam's in less than 24 hours and this is the kind of help i get :D lol !! if any of u come up wit the answers do lemme kno!
Title: Re: Physics p1 questions! help
Post by: catfish on June 08, 2009, 05:14:14 am: C and B
Title: Re: Physics p1 questions! help
Post by: astarmathsandphysics on June 08, 2009, 07:09:04 am: Right catfish frequency=c/wavelength=3X10^8/0.03
1/r=(1/10)*6+1/100
Title: Re: Physics p1 questions! help
Post by: mafia on June 08, 2009, 08:17:54 am: help plzz ppl i need ur help phy p1 omg plzzzzzzzzzzzzzzzzzzzzz help me out
Title: Re: Physics p1 questions! help
Post by: hafza89 on June 08, 2009, 08:29:46 am: thanks A star ...but y did u use 0.03 as wavelength
Title: Re: Physics p1 questions! help
Post by: x2decent on June 08, 2009, 08:36:49 am: can i gt may june 2009 phy. p1 mark scheme plzz ;D ;D....do u hav it :-\?
Title: Re: Physics p1 questions! help
Post by: ihatecheaters on June 08, 2009, 08:38:25 am: No
Title: Re: Physics p1 questions! help
Post by: khuram234 on June 08, 2009, 09:13:39 am: i will tell u the mark scheme of may/june 09 ppr k now happy but 2morow
nd hafsa did u understand that or do u want me to help out.
Title: Re: Physics p1 questions! help
Post by: x2decent on June 08, 2009, 10:54:54 am: Quote from: khuram234 on June 08, 2009, 09:13:39 am
i will tell u the mark scheme of may/june 09 ppr k now happy but 2morow
nd hafsa did u understand that or do u want me to help out.
thx man now dats what i call Pakistani Brother(Bhai).......By the way i liv in UAE and my exam will strt at 10:30 pst..and my email id is long_rider786@hotmail.com :D but before xam plz. :( i will be waitin' for ue email.once again thx ;D
Title: Re: Physics p1 questions! help
Post by: eye-candy on June 08, 2009, 11:09:18 am: Astar y did u take wavelength as 0.03??

@decent
how do u think will he get the mark scheme??
usne kaha aur tune maan liya...lol

By the way wich school in uae?
Title: Re: Physics p1 questions! help
Post by: khuram234 on June 08, 2009, 11:10:36 am: k my UAE bhai or behan i will mail it to u nd best of luck for exam i will add u on msn nd u accept it.
Title: Re: Physics p1 questions! help
Post by: Nasir69 on June 08, 2009, 11:13:15 am: DUDES CUD U PLZZ HELP ME WITH this

PHYSICS
9702/01/O/N/06

QUESTION NUMBER 21
I USED THE RATIO METHOD AND GOT "A" AS THE ANS BUT THE CORRECT ANS IS "D" ANH HOW THE HELL IS DAT
Title: Re: Physics p1 questions! help
Post by: khuram234 on June 08, 2009, 11:15:53 am: Nice question.
Title: Re: Physics p1 questions! help
Post by: astarmathsandphysics on June 08, 2009, 11:24:14 am: 17500000=pgh_water+pgh_oil=1000*9.8*(2000-x)+830*9.8*x

17500000=19600000-9800x+8134x=20000000-1666x
x=2100000/1666=1260

D
Title: Re: Physics p1 questions! help
Post by: majidegypt on June 08, 2009, 02:37:11 pm: Quote from: AbuxaR on June 07, 2009, 04:05:16 pm
I think its either
A, B, c or D

!!!!! oh how genious i am !!!!! ;)

haha
Title: Re: Physics p1 questions! help
Post by: majidegypt on June 08, 2009, 02:37:34 pm: Quote from: hafza89 on June 08, 2009, 04:54:00 am
lol.. exam's in less than 24 hours and this is the kind of help i get :D lol !! if any of u come up wit the answers do lemme kno!

less than 24 hours no

its like 40 hours away
Title: Re: Physics p1 questions! help
Post by: mohammedyi on June 08, 2009, 02:43:08 pm: hey guys.. any one got may june 09? iam soo confused! i have the exam tommoro at 8 am!!!:(
please let me know as fast as possible.. my email is peaceman_4ever@hotmail.com
thanks..
Title: Re: Physics p1 questions! help
Post by: Kim on June 08, 2009, 02:45:39 pm: Quote from: mohammedyi on June 08, 2009, 02:43:08 pm
hey guys.. any one got may june 09? iam soo confused! i have the exam tommoro at 8 am!!!:(
please let me know as fast as possible.. my email is peaceman_4ever@hotmail.com
thanks..

dude noone has done it so how can anyone have it?
Title: Re: Physics p1 questions! help
Post by: pikutata on June 08, 2009, 02:45:58 pm: my exam starts in 11hours.. :) wish me luck.
Title: Re: Physics p1 questions! help
Post by: majidegypt on June 08, 2009, 02:51:08 pm: Quote from: pikutata on June 08, 2009, 02:45:58 pm
my exam starts in 11hours.. :) wish me luck.

my exam starts in 36 hours
Title: Re: Physics p1 questions! help
Post by: AH2 on June 08, 2009, 02:53:35 pm: Quote from: majidegypt on June 08, 2009, 02:51:08 pm
Quote from: pikutata on June 08, 2009, 02:45:58 pm
my exam starts in 11hours.. :) wish me luck.

my exam starts in 36 hours
I have less than 24 hours, where r u writing the exams?
Title: Re: Physics p1 questions! help
Post by: Kim on June 08, 2009, 03:00:09 pm: Quote from: AH2 on June 08, 2009, 02:53:35 pm
Quote from: majidegypt on June 08, 2009, 02:51:08 pm
Quote from: pikutata on June 08, 2009, 02:45:58 pm
my exam starts in 11hours.. :) wish me luck.

my exam starts in 36 hours
I have less than 24 hours, where r u writing the exams?
my exam starts on wednesday!!!haha
Title: Re: Physics p1 questions! help
Post by: AH2 on June 08, 2009, 03:01:42 pm: big time difference I guess..
Title: Re: Physics p1 questions! help
Post by: Kim on June 08, 2009, 03:03:07 pm: Quote from: AH2 on June 08, 2009, 03:01:42 pm
big time difference I guess..
haha i know!!!!!!!!!!
oh well best of luk to all who r doin in the nxt 11 or 24 hrs!!!!!!!!!
Title: Re: Physics p1 questions! help
Post by: isaac mendez on June 08, 2009, 03:14:22 pm: my exam will start in 9 hours...
only Malaysia i think can leaked the paper!
to all Malaysian, plez don't tell anyone the Qs b4 24 hours after exam.
Title: Re: Physics p1 questions! help
Post by: manuroqs on June 08, 2009, 06:37:47 pm: why?plz mail me at rafs.991@gmail.com or raafayalam@hotmail.com
my exams starts in about 10 hrs..........
Title: Re: Physics p1 questions! help
Post by: MaNi_DaDuDe on June 08, 2009, 07:05:08 pm: Quote from: pikutata on June 08, 2009, 02:45:58 pm
my exam starts in 11hours.. :) wish me luck.

Good luck!

And naveed! Manibigshaw@hotmail.com
please!!!

Thanks you!
Title: Re: Physics p1 questions! help
Post by: night_buster on June 08, 2009, 07:35:38 pm: Hafza Dude
the 32 one is done this way
All the C's are in parallel and the resistance of each is 10
so (1/100)*6
S has resistance of 100 Ohm(s)
so it makes it (1/10)*6+(1/100) = 1.6 Ohm(s)
get it??
Title: Re: Physics p1 questions! help
Post by: bella37 on June 08, 2009, 07:39:32 pm: hi to all!i am sorry for not postng info abt chem p2!it ws the toughest exm EVER!my intrnt didnt work! :( i am using a cafe now

pls help me in physcs ppr1 , i dont get any more thn 25 :'( :'( :'( i will be extremly happy if any one notifies me!evn 10 ques will be like DIAMOND for me :P pls send me anyinfo abt it on ronaldo77177@gmail.com
please,god helps those who help others! luv this forum!good luck to all
Title: Re: Physics p1 questions! help
Post by: pixie on June 08, 2009, 08:46:51 pm: wat time is yr exam ?
Title: Re: Physics p1 questions! help
Post by: Ro1024 on June 08, 2009, 09:29:42 pm: hey... could anyone post some hard questions from the exam...??
thanks
Title: Re: Physics p1 questions! help
Post by: x2decent on June 08, 2009, 09:34:00 pm: could any 1 of u post the ans. of the q's which ill come in exam..... ;D ;D ;D ;D
Title: Re: Physics p1 questions! help
Post by: Ro1024 on June 08, 2009, 09:46:44 pm: dont have to memorize the whole paper... just give us the 10 or 15 last questions... in the form of A;D;C;B something like tht..