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Find the thickness of Aluminium Foil... 
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#1
Sep605, 02:15 PM

P: 9

This question comes from my Grade 11 Univ. Physics Teacher.
Problem: To as many significant figures as you can justify, determine the thickness of the aluminium foil. 1. Purpose 2. Procedure 3. Calculations (Significant Figures) 4. Conclucion Now I know that the density of Aluminium is 2.7g/cm^3. And I also know that the formula for cm^3 is Length X Width X Thickness. So if i find the mass, multiply it by the density, and divide it by the length and the width, will I come out with the thickness? He said there are many ways to do this and this is the only one I could come up with so any input or help would be much appreciated. Regards; Patrick 


#2
Sep605, 02:42 PM

P: 246

Fold some foil over and measure with a micrometre and divide by number of folds



#3
Sep605, 03:35 PM

Sci Advisor
HW Helper
P: 2,481

As a checkup, you can submerge it in water and measure displacement. Then work backwards from volume to thickness. If you perform both methods, then you can have a range (low estimate and high estimate). 


#4
Sep605, 07:00 PM

P: 9

Find the thickness of Aluminium Foil...



#5
Sep705, 02:10 PM

P: 246

Measure the foil length and width and then place it into a full measuring cylinder and collect the displaced water. You now have the volume of foil, the length and width and so can find thickness



#6
Sep705, 02:53 PM

P: 506




#7
Sep705, 08:57 PM

P: 9

Well I just measured the foil and I came out with 2.7 grams.
Here is what I have so far: Lenth: 30cm Width: 21cm Mass: 2.7g Density: 2.7g/cm^3. Am I missing any vital information? Im sorry to ask for help with it comes to the forumla and such, but I'm really stuck on this one, been working on it for 2 days :P I was told that you calculate the Area, (Length*Width*Height), then multiply together the Mass and the Density. *I got it. Thanks to all that helped, much appreciated :)* 


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