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 SPM Thread 08/09 (V 3), SPM is coming soon..!!!! Final days..!!

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work_tgr
post Oct 31 2008, 12:41 PM

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QUOTE(gzavincent @ Oct 31 2008, 12:15 PM)
It is in volume should use vpg rite??
*
Don't know what you ask for ?
work_tgr
post Nov 1 2008, 12:14 PM

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Either A or D.
work_tgr
post Nov 1 2008, 12:27 PM

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1000x50=50000J

333/90=3.7
work_tgr
post Nov 1 2008, 12:29 PM

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QUOTE(vick5821 @ Nov 1 2008, 12:28 PM)
not 1600 X 50?
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It said work to overcome "friction".
work_tgr
post Nov 1 2008, 12:32 PM

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QUOTE(pwincess @ Nov 1 2008, 12:30 PM)
why 1000x50?
not 600x50?  unsure.gif

Added on November 1, 2008, 12:30 pmthe answer is as u stated just now.
25E 21D
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600x50 is refer to total work done
work_tgr
post Nov 1 2008, 12:42 PM

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QUOTE(vick5821 @ Nov 1 2008, 12:35 PM)
1600 x 50 is the total work done rite??

It depends on how question defines "total work done". Ya, 1600x50 is better.
600x50 is the work done to rise the wood log.
work_tgr
post Nov 1 2008, 01:21 PM

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Tension = pvg-mg=(1.25)(1200)(10)-(800)(10)=15000-8000=7000N
work_tgr
post Nov 1 2008, 06:52 PM

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QUOTE(vick5821 @ Nov 1 2008, 06:50 PM)
oh..double decompostion reaction is two soluble salt mixed toghether
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yes. right
work_tgr
post Nov 1 2008, 08:28 PM

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QUOTE(vick5821 @ Nov 1 2008, 07:13 PM)
one add math ques.. solve the equation 2 + 2log 4 (p-6) = log 2 p

p/s the 4 and 2 are the base
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Attached Image
work_tgr
post Nov 1 2008, 08:43 PM

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QUOTE(wreckens15 @ Nov 1 2008, 08:31 PM)
i heard english paper going to be hard
vick how many a's u got for trials?
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vick is only form 4 student.
LOL! Don't believe it, right? blink.gif
work_tgr
post Nov 1 2008, 08:46 PM

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QUOTE(ff8ong @ Nov 1 2008, 08:45 PM)
He really form 4 student..
*
-- *hehe* - quickly reedit whistling.gif

Good Luck SPM candidates. You only have less than two weeks time for final preparation.


This post has been edited by work_tgr: Nov 1 2008, 08:51 PM
work_tgr
post Nov 1 2008, 08:59 PM

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QUOTE(Leto Kynes @ Nov 1 2008, 08:56 PM)
work_tgr I don't think you can just remove the log like that  hmm.gif
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why not?
simple example:
x=y
log10 (x)= log10 (y)

Added on November 1, 2008, 9:01 pm
QUOTE(mych91 @ Nov 1 2008, 08:54 PM)
to be a little bit more precise, it's more like 1 weeks to spm.. damn..
*
uhhuuu!! Every body cell is getting excited!

This post has been edited by work_tgr: Nov 1 2008, 09:01 PM
work_tgr
post Nov 1 2008, 09:10 PM

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QUOTE(mych91 @ Nov 1 2008, 09:02 PM)
haha.. yeah hopefully..
what work_tgr did wrong was he/she didnt change the equation from log base 4 to log base 2.otherwise, if all are in log with the same base, it is possible that all logs be canceled out.

user posted image
LOL! .. base 2 liao leh
--

I know the second step looks "suspicious" to you ... but nod.gif

This post has been edited by work_tgr: Nov 1 2008, 09:12 PM
work_tgr
post Nov 1 2008, 10:16 PM

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QUOTE(pwincess @ Nov 1 2008, 10:14 PM)
ur ans is correct but how did u get 1.2x4200x(50-T)
why not T-50 ?
bcoz it asked for the stone final temperature. im confused
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because the final temperature must lower than 50 and higher than 28
work_tgr
post Nov 1 2008, 11:07 PM

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QUOTE(vick5821 @ Nov 1 2008, 10:56 PM)
the ans for the add math ques is just 8

haha laugh.gif I'm right icon_rolleyes.gif
work_tgr
post Nov 1 2008, 11:15 PM

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QUOTE(vick5821 @ Nov 1 2008, 11:14 PM)
but why i can get 4.8 and 8?
*
show your steps
work_tgr
post Nov 2 2008, 09:07 AM

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QUOTE(vick5821 @ Nov 1 2008, 07:13 PM)
one add math ques.. solve the equation 2 + 2log 4 (p-6) = log 2 p

p/s the 4 and 2 are the base
*
log2(4) + [log2 (p-6)^2]/log2(4) = log 2 (p)
4+log2 (p-6)^2=2log2(p)
2^4*(p-6)^2=p^2
16(p^2-12p+36)=p^2
15p^2-192p+576=0

p=8 @ 4.8

if p=4.8

2log 4 (p-6)
=2log4(-1.2)

log4(-1.2) is infinity. that why p=4.8 is not acceptable.

This post has been edited by work_tgr: Nov 2 2008, 09:07 AM
work_tgr
post Nov 2 2008, 06:32 PM

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Honestly, I nvr be the top student at school. But, my opinion about the purpose of study should lay on getting a related job in the future. Some how, it's hard.

This post has been edited by work_tgr: Nov 2 2008, 06:37 PM
work_tgr
post Nov 3 2008, 06:16 PM

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QUOTE(vick5821 @ Nov 3 2008, 06:12 PM)
can give me example?  ya..i am talking light chap
*
your image in the mirror is virtual. it can not walk out and you can not go in.
but the image which you can "take it out" and focus on screen is real.

This post has been edited by work_tgr: Nov 3 2008, 06:17 PM
work_tgr
post Nov 3 2008, 06:21 PM

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QUOTE(vick5821 @ Nov 3 2008, 06:19 PM)
mean?
*
meaning you can not take it out and paste in somewhere. na mu deh ?
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