Physics, Chemistry and Biology: Post your doubts here!

[Kiara P.]

People does anyone have any graph plotting notes and important highlights that we should focus on for 0610 Biology O-level..?
Like Revision notes, I need them desperately. Thank youu

 

[Lana19984]

Guys regarding a graph in paper 6 physics can i not start the graph both y and x axis from zero ? lets say i have values of 1.1 to 2.1 , can i start the y axis lets say from 1 , and then x-axis has values from 40 to 90 , can i star the x-axis from 40 ?

 

[Saad the Paki]

Guys regarding a graph in paper 6 physics can i not start the graph both y and x axis from zero ? lets say i have values of 1.1 to 2.1 , can i start the y axis lets say from 1 , and then x-axis has values from 40 to 90 , can i star the x-axis from 40 ?

Yup . U can start both the axis from where ever u want

 

[Ahmed Elsiddig]

We know that the general formula for an alcohol is C(^n)H(^2n+1)OH and that the Mr of C and H is 12 and 1 respectively, so:
12n + 2n + 1 + 16 + 1 = 116 (oxygen - 16)
14n + 18 = 116
14n = 98
n = 7
So the molecular formula is, C(^7)H(^15)OH................

U r the best!!!!
One more question...can u please explain to me experiments in physics that nclude change of voltage by sliding contact or whatever

 

[Lana19984]

can anybody solve 2006 may june paper 6 question 3 part a(v)???? physics 0625

 

[Lana19984]

Yup . U can start both the axis from where ever u want

can you solve 2006 may june paper 6 question 3 part a(v)???? physics 0625

 

[Ahmed Elsiddig]

Can anyone plzzzz post the nitrogen cycle in a logical order?

Can u please help me with bullbs...Does brightness of a bulb increase with resistance

 

[XxChampXx]

Can someone explain when you draw a best fit and when you draw a curve. At times even though the graph is a curve they expect best fit

 

[Kiara P.]

Hey !
I have a question/ doubt regarding Biology 0610 Paper 6 , When a question often asks us to elucidate a graph or describe it we have to give an example upon the graph like giving Points and stuff found on the graph and including it for a description!

Shukriya.

 

[helppleasee]

May june 2014 62 physics
Question 1 c (iii)
How do you do itttttttt

 

[helppleasee]

Can someone explain when you draw a best fit and when you draw a curve. At times even though the graph is a curve they expect best fit

By the best fit in a curved graph they mean to say that your line should be accurate with all points but no need fora straight line

 

[XxChampXx]

By the best fit in a curved graph they mean to say that your line should be accurate with all points but no need fora straight line

Thanks

 

[sj0007]

People does anyone have any graph plotting notes and important highlights that we should focus on for 0610 Biology O-level..?
Like Revision notes, I need them desperately. Thank youu

For the graphs, there is very good info in the learner guide....... Have u checked it out yet?
If not read it from the learner guide for bio
If u don't have the learner guide, I can post it for u.......

 

[sj0007]

U r the best!!!!
One more question...can u please explain to me experiments in physics that nclude change of voltage by sliding contact or whatever

Are u talking abt the paper 6 questions??

 

[Lola_sweet]

P6 is one place where u can lose a lot of marks for small things :/
so do check out this learners guide for exam tips
http://www.cie.org.uk/images/151727-cambridge-learner-guide-for-igcse-physics.pdf

 

[sj0007]

Can u please help me with bullbs...Does brightness of a bulb increase with resistance

No I don't think so but there are questions which conclude that resistance increases with brightness.......... Wait let me confirm it.........

 

[sj0007]

Hey !
I have a question/ doubt regarding Biology 0610 Paper 6 , When a question often asks us to elucidate a graph or describe it we have to give an example upon the graph like giving Points and stuff found on the graph and including it for a description!

Shukriya.

Yes u just describe the shape of the graph using terms like maximum, peak, increase, decrease or minimum or etc using values in each description
Using values from the graph is very important............

 

[Saad the Paki]

U r the best!!!!
One more question...can u please explain to me experiments in physics that nclude change of voltage by sliding contact or whatever

Voltage is not increased.. resistance changes.. it is basically a sort of variable resistor.... resistance is proprtional to length.. so of the sliding contact is moved such that all of the wire is being used then resistance will be max..
and if none of the wire is used then resistance will be minimum

 

[Saad the Paki]

can anybody solve 2006 may june paper 6 question 3 part a(v)???? physics 0625

It would be better if u could take a screenshot of the question or post a link to the question paper...

 

[Muaaz Iqbal]

Guys we have to draw the graph in Bio and chem with Pen or Pencil ?
Secondly how to find surface area