Physics, Chemistry and Biology: Post your doubts here!

[qasim_kuwait]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_s11_qp_31.pdf

question 1 part c how do u calculate the gradient

 

[ThatReallyReallyWeirdDude]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w07_qp_3.pdf question (6) (a)
can someone like draw the rays n show them to me or something?

I hope I helped!

 

[ThatReallyReallyWeirdDude]

thanks alot

THANK U SOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO MUCH


THANK U SOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO MUCH

You're both welcome

 

[natsume hyuga]

can someone clearly tell me the range in air the beta and alpha particles have?

 

[za Shadow]

HELP IS NEEDED
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w06_qp_6.pdf
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w06_ms_3.pdf
q 6 b) how is it virtual no lines r extended??????????? and why is it inverted???????

 

[gelato]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w05_qp_3.pdf
number 2 b) and c)

Edit: and can anyone draw me the diagram of 11 a) please?

 

[ThatReallyReallyWeirdDude]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_s11_qp_31.pdf

question 1 part c how do u calculate the gradient

Gradient = y-step/x-step
The y-step is the difference in y-co-ordinates in two points and the x-step is the difference in those co-ordinates of those points.
For example, if we had a line with points (2,3) and (8, 12)
The y-step is 12-3=9
The x-step is 8-2=6
So the gradient is 9/6 = 1.5
So for your question, select two points on the line you drew, find the y-step and x-step and find gradient
It's important for you to draw a triangle between those two points, like this:

(note: I made this on photoshop so it's not accurate, but you understand hopefully It's important to show the triangle thing in red, because you often get marks for it ["Show clearly on the graph how you got this answer"])

 

[Muzammil100]

Hi ! Can you help?

May/June 2011 Varient 1
http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Physics%20(0625)/0625_s11_qp_31.pdf

Q3)a)i
ii)
iii)
iv)

9)a)i)

 

[qasim_kuwait]

^

thank u ur a life saver

 

[ThatReallyReallyWeirdDude]

can someone clearly tell me the range in air the beta and alpha particles have?

This actually depends on the energy of the alpha/beta particle, but we don't need to know that
All we need to know is:
a) Alpha particles get stopped by 5cm of air or a paper
b) Beta particles get stopped by few mm of aluminium
c) Gamma rays only stopped by i think at least 5cm of lead.

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w05_qp_3.pdf
number 2 b) and c)

Edit: and can anyone draw me the diagram of 11 a) please?

2a)
Condition 1: All upward forces are equal to downward forces (i.e. no net force)
Condition 2: Sum of anticlockwise moments are equal to sum of clockwise moments.
b)Since it's in equilibrium anticlockwise moments = clockwise moments
so 6x40=Fx30 - where F is the force we want to find
F = 8N
11)
I'm not sure about placement of GM tube.

 

[za Shadow]

HELP IS NEEDED
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w06_qp_3.pdf
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w06_ms_3.pdf
q 6 b) how is it virtual no lines r extended??????????? and why is it inverted???????

 

[natsume hyuga]

capacitors are used in time delay circuits. But "higher the resistance greater is the delay". Greater resistance of what? the capacitor?

 

[natsume hyuga]

HELP IS NEEDED
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w06_qp_6.pdf
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w06_ms_3.pdf
q 6 b) how is it virtual no lines r extended??????????? and why is it inverted???????

paper 6 or paper 3?

 

[ThatReallyReallyWeirdDude]

Hi ! Can you help?

May/June 2011 Varient 1
http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Physics%20(0625)/0625_s11_qp_31.pdf

Q3)a)i
ii)
iii)
iv)

9)a)i)

You mean 3b I assume since 3a has no subquestions

q9ai)

 

[Z.A.M]

You mean 3b I assume since 3a has no subquestions
View attachment 10771
q9ai)View attachment 10772

Cool how do u do this stuff red writing?
Anyways hows prep

 

[za Shadow]

paper 6 or paper 3?

paper 3 sorry my bad

 

[ThatReallyReallyWeirdDude]

Cool how do u do this stuff red writing?
Anyways hows prep

Great thanks
I'm using photoshop actually ;o

 

[sma786]

View attachment 10768I hope I helped!

thanks alot, ur the best lol really thanks =]

 

[Z.A.M]

Great thanks
I'm using photoshop actually ;o

Oh k That Really Really Cool Dude lol consider changing name
How's the prep ready to battle Physics

 

[Z.A.M]

ThatReallyReallyWeirdDude you know any difficult questions can u tell me incase I've missed you know