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[thenewkid™]

Can someone tell how will the diagram look like?.?

[Malak]

Question 3 part c ii and iii

http://www.freeexampapers.us/IGCSE/Physics/CIE/2002%20Jun/0625_s02_qp_6.pdf

Thanks in advance

[Adzel]

http://www.xtremepapers.net/CIE/Cambridge%20IGCSE/0625%20-%20Physics/0625_s09_qp_6.pdf

Guys this paper is May/ June 2009 and the question 5 b) is hitting my head.
The answer in the markscheme is :-

• Readings taken at either side/diameter of cylinder
• Position of mid point found
• Mark position of centre

Please give me this answer in a diagram if possible !
thank you

Here ya' go;

[rahuldevnani93]

Heyy Adzel, I hope its correct.

[thenewkid™]

how do u find the gradient by the triangle method?

Thanks

[rahuldevnani93]

Because the marking scheme says it different

The answer in the markscheme is :-

• Readings taken at either side/diameter of cylinder
• Position of mid point found
• Mark position of centre

[Shazizzzle]

Question 3 part c ii and iii

http://www.freeexampapers.us/IGCSE/Physics/CIE/2002%20Jun/0625_s02_qp_6.pdf

Thanks in advance

using the graph you've made, you take the corresponding values of the time taken, at 20 deg. c, and at 30 deg. C, from the graph, and you take their ratio.
I.e., draw a dotted line from 20 deg c, where the line meets the curve, continue on to the y axis and use the value you get.
Simple division.

You will see the ratio of 20/30 and 40/50 is increasing by a set interval.
use that interval to predict the answer of 50/60.

[xMilishax]

Question 3 part c ii and iii

http://www.freeexampapers.us/IGCSE/Physics/CIE/2002%20Jun/0625_s02_qp_6.pdf

Thanks in advance

c)i)As the temperature of the water is increased, the time taken to dissolve the sugar is decreased.

c)ii)=450/160 = 45:16, =70/24 = 35:12

Hope this helps.  

[Shazizzzle]

Because the marking scheme says it different

The answer in the markscheme is :-

• Readings taken at either side/diameter of cylinder
• Position of mid point found
• Mark position of centre

The marking scheme is correct.

Okay, suppose the diameter of the cylinder is 2 cm.
Mark the center of the cylinder.
Place the cylinder at 10.0 cm.
If it's diameter was 2 cm, you should be able to see exactly to the left of the cylinder, 9 cm, and to the right, 11 cm. This will prove that the centre is indeed on 10.

[Adzel]

Question 3 part c ii and iii

http://www.freeexampapers.us/IGCSE/Physics/CIE/2002%20Jun/0625_s02_qp_6.pdf

Thanks in advance

According to my graph;

(ii)     450
        ----- = 2.81
         160  

(iii)    
          70
         ---- = 2.92
          24

[polltery]

Thanks thenewkid™!

[red_911]

hey please help me in june 2007 question 3(b)1 .. how is R propotional to 1/d square ?
and
also in june 2005 question 4(c) ask about T being proptional to m .. but the mark scheme says that the answer is "NO" as T/m increases as m decreases ..why do we have to take T/m  

[rahuldevnani93]

The marking scheme is correct.

Okay, suppose the diameter of the cylinder is 2 cm.
Mark the center of the cylinder.
Place the cylinder at 10.0 cm.
If it's diameter was 2 cm, you should be able to see exactly to the left of the cylinder, 9 cm, and to the right, 11 cm. This will prove that the centre is indeed on 10.

HEyy Shazizzzle, Please if possible draw a diagram !! please...

[Malak]

Wat about the iii part...predicting the value...?

[holtadit]

how do u find the gradient by the triangle method?

Thanks

Divide the change in Y value by the change in x value