Physics, Chemistry and Biology: Post your doubts here!

[natsume hyuga]

lithium ----> pink or crimson
sodium ----> yellowish orange
potassium ---> lilac or violet
hope i helped

thanks a million!

 

[IGSCE.Geek.]

HIV targets lymphocytes , specially T lymphocytes. These lymphocytes stimulate B cells to produce antibodies, as well as destroy pathogens them selves. HIV destroys these lymphocytes , meaning B cells will not be able to produce anti bodies to fight pathogens. This WEAKENS our immune system causing us to be more prone to diseases and infections.

i kinda didnt get it could you like give me a site where i can see em or understand clearer
btw thanks for the help

 

[always-smile :)]

thanks a million!

ur welcome

 

[Andyila1.2]

youre welcome hope the notes helped!

yup they did .. amazing thnx again bro

 

[beewhiz997]

yup they did .. amazing thnx again bro

your welcome

 

[always-smile :)]

sure here :http://www.xtremepapers.com/communi...cs-chemistry-biology-notes.14611/#post-258146

the notes are awesome and really helpful .......thanks a billion

 

[Mariam Mohamed SX132]

Can someone post a link with revision notes to help me with studying paper 6 in chemistry??
Thank you

 

[always-smile :)]

Can someone post a link with revision notes to help me with studying paper 6 in chemistry??
Thank you

this 1 was posted by sma786

 

[beewhiz997]

the notes are awesome and really helpful .......thanks a billion

thanks v much!

 

[Ahmedm96]

i cant under stand how capillarity tube works

 

[always-smile :)]

i cant under stand how capillarity tube works

this is phy. right??

 

[Ahmedm96]

this is phy. right??

nope biology

 

[ZainH]

i kinda didnt get it could you like give me a site where i can see em or understand clearer
btw thanks for the help

Your welcome, and I don't know any sites sorry.
What part didn't you exactly understand?

 

[za Shadow]

2c) From b we know that the unloaded length is 5.7 cm. The length of the spring when a 2.5N load is added is 10.7cm. The extension of the spring on a 2.5N load is:
Stretched Length - Unstretched length = 10.7 - 5.7 = 5/2= 2.5

6f) The line has to pass straight until the end of the second glass because there is no change in speed. When moving from glass to air, it should bend away from the normal. This is because the speed of light in air is higher than the speed of glass in medium.
The other three questions im not really sure about. Sorry.

09:
8e) It is actually sin i/sin r. When i did it in my calculator i got the ryt answer.
1.49= sin i/sin 35 = (sin 35) * 1.49. Then find the sin inverse of the answer.
The other question i cudnt really figure it out. Im sorry. I hate physics and im soo bad at it. But these are the ones i succeeded in answering.

thanks

 

[sma786]

I'm lost in physics, can someone help me? for paper3 =[

 

[Just Smie :)]

I'm lost in physics, can someone help me? for paper3 =[

What about bringing the syllabus ad the book then u start studying normally ?

 

[sma786]

What about bringing the syllabus ad the book then u start studying normally ?

I'm doing it, and past papers also, but i'm scared =[ i see new questions in the past papers ..

 

[Just Smie :)]

I'm doing it, and past papers also, but i'm scared =[ i see new questions in the past papers ..

there will always be some new questions,but the ideas themselves are repeated Don't worry inshaAllah everything will be okay

 

[always-smile :)]

I'm doing it, and past papers also, but i'm scared =[ i see new questions in the past papers ..

each year has a new question and that's normal if u faced 1 or 2 that u didn't knw and solved the rest of the exam correctly this means that u studied it right then those 2 questions have a new idea or tricky point

 

[sma786]

each year has a new question and that's normal if u faced 1 or 2 that u didn't knw and solved the rest of the exam correctly this means that u studied it right then those 2 questions have a new idea or tricky point

hmm thanks =]