SPM Thread 08/09 (V 3), SPM is coming soon..!!!! Final days..!!
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 Nov 3 2008, 10:50 PM
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Junior Member
200 posts Joined: Oct 2007  
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The mean of a set of data 28, p+12, 34, 36 and 2p is q. If each value of data is multiplied by 1/2 and then 3 is added to the product, the new mean is 20. Find the value of p and q.
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Nov 3 2008, 10:51 PM
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Senior Member
3,871 posts Joined: May 2008 
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form 5 add math which chap most hard?
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Nov 3 2008, 10:51 PM
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Senior Member
1,232 posts Joined: Dec 2005
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QUOTE(fhNicK @ Nov 3 2008, 09:56 PM) Radiation is simple to understand. Only a few formulas there and some basic facts. Keep practicing and you'll eventually get it. I think you mean Radioactivity, not radiation And don't get nuclear fusion & fission mixed up. =D For the probability distribution, are you referring to: e.g. P(Z>0.5), P(Z<0.5), P(Z<-0.5)?   . Radiation is heat transfer. |
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Nov 3 2008, 10:54 PM
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Senior Member
1,404 posts Joined: Feb 2006 From: KL 
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QUOTE(Zepx @ Nov 3 2008, 10:51 PM) I think you mean Radioactivity, not radiation . Radiation is heat transfer.Thermal radiation is heat transfer to be specific. Radiation is the general term http://en.wikipedia.org/wiki/Radiation QUOTE The most common use of the word "radiation" refers to ionizing radiation From wiki. |
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Nov 3 2008, 10:57 PM
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Senior Member
964 posts Joined: Dec 2005 From: Ipoh!
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[28 + p+12 + 34 + 36 + 2p] / 5 = q
q/2 + 3 = 20 Slove stimultaneously. |
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Nov 3 2008, 10:58 PM
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Senior Member
1,404 posts Joined: Feb 2006 From: KL
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QUOTE(pwincess @ Nov 3 2008, 10:50 PM) The mean of a set of data 28, p+12, 34, 36 and 2p is q. If each value of data is multiplied by 1/2 and then 3 is added to the product, the new mean is 20. Find the value of p and q. q will be 34 cuz you have to work in reverse to find the old mean(20-3)(2) Then you can find p with the mean formula. |
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Nov 3 2008, 10:58 PM
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Senior Member
1,232 posts Joined: Dec 2005
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QUOTE(raptor_cZn @ Nov 3 2008, 10:54 PM) Thermal radiation is heat transfer to be specific. Radiation is the general term K i'm wrong sry http://en.wikipedia.org/wiki/Radiation From wiki. . |
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Nov 3 2008, 11:02 PM
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Junior Member
68 posts Joined: Apr 2007
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eh guys. spm a.. im also taking it this year. all of you sej finish alr?
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Nov 3 2008, 11:02 PM
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Senior Member
1,404 posts Joined: Feb 2006 From: KL
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QUOTE(fhNicK @ Nov 3 2008, 09:56 PM) Radiation is simple to understand. Only a few formulas there and some basic facts. Keep practicing and you'll eventually get it. Fusion and fission is simple to rememberAnd don't get nuclear fusion & fission mixed up. =D For the probability distribution, are you referring to: e.g. P(Z>0.5), P(Z<0.5), P(Z<-0.5)? The word fuse obviously means to combine. So you are combining smaller particles like hydrogen atoms to produce helium and the other stuff. Fission means breaking down into smaller parts. Like binary fission in Bio  |
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Nov 3 2008, 11:04 PM
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Senior Member
1,936 posts Joined: Nov 2006 From: Klang,Selangor 
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Nw i am stil in form 4 Sej
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Nov 3 2008, 11:06 PM
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Junior Member
200 posts Joined: Oct 2007
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QUOTE(sasaug @ Nov 3 2008, 11:04 PM) Nw i am stil in form 4 Sej me too. i just started on zmn jahiliah. not yet read other bab. |
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Nov 3 2008, 11:06 PM
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Senior Member
1,232 posts Joined: Dec 2005
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I've went through sej like almost 4-6 times but still can't get them into my brain.
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Nov 3 2008, 11:07 PM
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Junior Member
68 posts Joined: Apr 2007
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aiya same la. the kerajaan after khalifah ali bin abu talib thing important ma? if not i skip a.. =.=
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Nov 3 2008, 11:14 PM
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Senior Member
2,978 posts Joined: Sep 2006 From: 3°10'21.80"N , 101°43'17.20"E
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pwincess , what is the answer for p and q ? I've done my working will post if correct.
And vick, what do u want to know about physics? I might help if I have master the topic. |
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Nov 3 2008, 11:17 PM
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Junior Member
200 posts Joined: Oct 2007
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p is 20 and q is 34.
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Nov 3 2008, 11:21 PM
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Senior Member
546 posts Joined: Nov 2007 From: Home
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QUOTE(vick5821 @ Nov 3 2008, 10:48 PM) work_tgr..how is the virtual image? still cant get la..get abit virtual image is normally formed on the other side of the screen.this image is virtual, and virtual means can see, but cannot touch. in other words, its only there behind the mirror/lens, you only can see it. if you put a screen to capture the image, cannot be done. cause its CAN SEE, CANNOT TOUCH. a real image, is really real la. CAN SEE & CAN TOUCH. means you put a screen, like the cinema, and the picture can be captured =) |
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Nov 3 2008, 11:24 PM
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Senior Member
964 posts Joined: Dec 2005 From: Ipoh!
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QUOTE(SticH @ Nov 3 2008, 10:57 PM) [28 + p+12 + 34 + 36 + 2p] / 5 = q My equation is correct.q/2 + 3 = 20 Slove stimultaneously. |
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Nov 3 2008, 11:50 PM
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Senior Member
3,871 posts Joined: May 2008
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QUOTE(Shenay @ Nov 3 2008, 11:21 PM) virtual image is normally formed on the other side of the screen. can be captured mean what..? can use camera to take pic?this image is virtual, and virtual means can see, but cannot touch. in other words, its only there behind the mirror/lens, you only can see it. if you put a screen to capture the image, cannot be done. cause its CAN SEE, CANNOT TOUCH. a real image, is really real la. CAN SEE & CAN TOUCH. means you put a screen, like the cinema, and the picture can be captured =) |
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Nov 4 2008, 12:02 AM
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Senior Member
1,404 posts Joined: Feb 2006 From: KL
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QUOTE(vick5821 @ Nov 3 2008, 11:50 PM) can be captured mean what..? can use camera to take pic? Not camera. Like if you put a piece of paper, the image can be formed on it. You can't do that with say a plan mirror. The only way you can see the image formed by the mirror is by looking at the mirror itself. Maybe this will help http://en.wikipedia.org/wiki/Virtual_image http://en.wikipedia.org/wiki/Real_image |
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Nov 4 2008, 12:27 AM
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Junior Member
277 posts Joined: Dec 2006
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Form 5 add maths hmmm.....
None are hard. But i'd guess MORE student would have difficulties in 1) Integration ( the volume part) 2) Trigonometry 3) Probability Distribution Cmon la vick... score 89 in Chem u think Add maths is hard for you ? You kidding ?  |
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