Recent content by joedag

lucky! Although the weather is on the up here in England! Thanks for all your help. Unfortunately i can't carry out any more experiments and have to write up the investigation now - the thing i struggle most with is explaining things, which is why i need help with explaining why there is heat...

oh and by the way, the block is cylindrical

Yes, i didn't insulate the block. I would like to go the extra mile, could you help me with deriving an equation to estimate heat loss? What can i do that is simpler also? Good to hear the result sounds reasonable also!

Hi again, I repeated the experiment and obtained a value of 1045 JKGC. This is now higher than the published value (900). Now i need to think of reasons to which the value i obtained is higher than the published value. I know of heat loss, but how is the heat lost? Also, are there any...

I must have done something wrong...No further explanation surely...Can i just confirm that the value i should obtain in my practical should be higher than the published book values due to heat loss? and what other reasons? If so, i shall redo my investigation. . .

i noted that the initial current was 1.93A and the initial voltage was 5.71. The current dropped considerably (dont know why?) so i took this as an anomalous result... Don't know if this has much effect. . .

I'm really confused :(, i seem to be getting more confused by the minute trying to get my head round this. . . What possible reasons are there behind my calculated result being lower than the 'true' value? Would you expect, if carried out correctly, the result to be a higher value than the...

So should the value have been higher than the published one? In other words does heat loss make my calculated value higher or lower? its just something really confusing me at the moment, the reason to why my value is too low, or why it may be too high in other circumstances...

I don't, sorry. It was just a big 1kg cylindrical block. I'm guessing however that it wasn't 100% pure

Thanks for the reply! They are the average values for the voltage & current for the entire investigation.

Hi all, I am currently in the process of writing up my AS coursework investigation of finding the specific heat capacity of Aluminium, and am a bit stuck at explaining some of my results. My results for the SHC of Aluminium are lower than the published values. My value: 700.93 JKgC...