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ALL subject help/resources/doubts HERE only

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Priceless:

--- Quote from: THEIGBOY on June 01, 2009, 11:52:55 pm ---Guyz i setup a new site for pastpapers (being hosted on my computer) for the following subjects from 1999 onwards including marking schemes
i)business Studies
ii)Maths
iii)English
iv)biology
v)physics
vi)chemistry
vii)ICT
viii)french
ix)Arabic
pastpapers.serveftp.net
Thanks..
THEIGBOY
plz +rep if u like it...

--- End quote ---

hey THEIGBOY....hw r u...i alredy hv all da pastpapers but thnkz still...it wud b a gr8 help 4 many ppl....definitely +rep 2 u...
Take care n all da best 4 xams!!!  ;)

THEIGBOY:
:) Thanks alot priceless.....

angell:
n ur website is? :D n +rep 2u..

Priceless:
lol...ya 1st evn i wz confused but he hz mentioned it rite after the subjects....under arabic

here it is neway..."pastpapers.serveftp.net"...gud luck 2 u all...Take care

idol2009:
 Hey, I was doing the Oct/Nov 08 Paper 3, and on question 5c), it asks you to calculate the specific latent hear of fusion of ice from the results they have given you...
I usually find this pretty straightforward, but on this problem I was kind of stuck, because my answer didn't match the mark scheme...
The question goes as follows:
"Using a 40W heater, 16.3 g of ice is melted in 2.0 minutes. The heater is then switched off. In a further 2.0 minutes, 2.1 g of ice is melted.
Calculate the specific latent heat of fusion of ice from these results."

So I basically did the following calculation:
Total Energy supplied = 40 x 120 = 4800 J
Total Mass melted by heater = 16.3 g
Specific latent heat = 4800/16.3 = 294.5 J/g

I don't understand what I've done wrong, and what the switching the heater off and the further 2 mins has to do with it?
Any help would be appreciated thanks!

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