Saturday, November 6, 2010

Lab 2E Quiz and Graphing

Today we have just done a quiz on Lab 2E.

The quiz was just all about calculating the thickness of a certain object, such as alunminum foil.

Equation:

Density=Mass/Volume

If you want to calculation the thickness based on the information of an object:
Density=2.70g/cm^3
Mass=5.0g
The object Area=15cm by 16cm
And calculation the thickness:
It goes,
Volume=(2.70g/cm^3)/5.0g=0.54m^3
Thickness=0.54cm^3/15cm/16cm=2.25*10^-3cm

Next, we went to lab room and learnt how to graph base on the information of mass and volume.
 

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