lol im lucky 7 hahaa. did u know my angka giliran is 007 at the end? hahahaaa.

my seniors all say once start very fast finsih one

okok la hahahahahaaaaa

mix the 2 equations together. Put both y=?? Then mix y=y


Then use B^2 - 4AC <0

omg. i got the same answer also lol

p^2 - 64 <0

(p+8)(p-8) < 0

so the points are -8 and 8, since a>0 and the equation is <0

its in the middle

-8<p<8

correct, volume increase density decrease

now u have to understand the concept of density. Density is the mass per unit volume. That is how u derive

p= M/V

So now u have ur ice. The particle are closely compacted together. So the amount of particle squeezing together is higher. When it reaches its melting point, the heat supplied is used to break the bonds between H20 molecules. (not the covalent bond of H20 but the intermolecular forces). Now it is a liquid where the particle arrangement is looser than of in solid. Mass is the amount of particle in an object, so it remain constant given the fact that it is not evaporated. So Mass is constant. But the volume increase. This is because of the looser arrangement of H20 particle. So they are more spread out.

For an example, get a few ping pong balls and a cubical. Arrange them in mannerly order like in solid. Measure the length and width. Now spread the balls like the molecule in liquid. U will notice an increase of space used.
In this case, the operation functional of volume is the space used.

Then we look back into density

p=M/V

So when the Mass is a constant, the relationship of P and V is inversely proportional

its like

P=M(1/V) where M is constant.

So as Volume increases, density decreases.



Addons: Yes, charles law is basicly the heat used(temp increase) to break the bonds between molecules causing it to be more spread out. So its volume is higher. So V=kT. When derive k in term of V and T, u will get V/T. To cut thing short, heat increase, volume increase.

This post has been edited by IcyDarling: Nov 20 2010, 08:27 AM

google lar

wat cheh cheh all... i act humble only lorr/. cant find those anywhere on the net Tommy's law of density? XD


Help help half way lurk here. Then continue lorhh

lol.. little piggie wan to sleep again xD . Goodnite then

write in paragraph form. Dunnit ur pendahuluan penutup la == For essay question, u write rangka first. If not enuf time to write, just passup ur rangka, some examiner give marks one.

check the previous post, i posted my solution, see if its right

sry, my solution might be wrong. i tried with my calculator and 30 and 255 gives -1 instead of 1.. will try to figure out

oh yeahhh.. forgotten about this way.. went to do the super long way, end up get wrong answer summore

wts that??

y u highlight everything? Pintas ed wan to summarize summore...

the textbook pinjam one horr.. if the paria kia before me highlight i sure cannot read the other unhighlighted one... form 4 i bought my own.. form 5 one.. macam2 colour... the points all not enuf one.. dunno which student do one.. force me to highlight also now ==

WTH? GENTING? SO KAO LAT LORRHHH

so no 5am tomorrow? gonna miss u

This post has been edited by IcyDarling: Nov 20 2010, 10:44 PM

wokiieeeeee

first question. the H should decrease while X should go down.

H decreases because the weight is decreased, so the downward force is lessen, causing it to float higher. Then for X, because the mass drop, according to p=m/v ,mass drop, density also decreases. As it float higher, the amount of water displaced is lower. So the water level should drop. It will drop because when it float higher, water flows to cover the empty space. So the water level lower






2nd question i think its A.

First u hve to know that the density.

Hot water < Cold water < sea water in term of density.

For it to float in the same level, the weight must be the same. So, denser liquid will need less volume. While less dense liquid will need more volume.

So A? If tak faham , msg in skype~~


Courtesy of Yasir, Kelly, space1x too~