2011年11月22日星期二

Aluminum Foil Thickness Lab


Objective: To calculate the thickness of a sheet of aluminum foil and express the answer in terms of proper scientific notation and significant figures

Supplies: 3 rectangular pieces of aluminum foil (minimum 15cm*15cm); metric ruler and centigram balance.

Experimental results:
Table 1
sheet    Length(cm)    Wideth(cm)    Mass(g)
1           16.8                15.4               1.02
2           15.8                15.0               0.95
3           17.2                17.0               1.16

Formulars:
Volume of a rectangular solid:  V=L*W*H

Density: D=M/V

H(average)=(H1+H2+H2)/3

Example:
Sheet1: 2.70g/cm^3=1.02g/(16.8cm*15.4cm*H)   H1=1.46*10^-3cm

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