Lab #1 - Experiment #1 Density May 21, 2008 Erin Samplin...

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Experiment #1 – Density May 21, 2008 Erin Samplin Group Member: Catie Destio
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Abstract The main purpose of this laboratory experiment is to accurately measure the density of various materials, such as aluminum and lead. Students will also learn how to use a vernier caliper and a micrometer caliper to measure both the heights and diameters of various cylinders. The density of aluminum was calculated to be 2.65 g/cm 3 , with an error of 1.85%, and the density of lead was calculated to be 9.23 g/cm 3 , with an error of 18.32%. Possible errors include gross error, systematic error, and random error. Discussion Diagram Equations M = D x V where M = mass, D = density, and V = volume. V c = πR 2 H = πD 2 H/4 where V c = volume of a cylinder, R = radius, H = height, and D = diameter. Graph The standard equation for a straight line is y = mx+b where m = slope. Substituting the equation for density into this standard equation, mass will be placed on the y-axis and volume will be placed on the x-axis. The slope of the line will represent the density. A graph of mass versus density was thus constructed. From the slope of the graph, the
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Lab #1 - Experiment #1 Density May 21, 2008 Erin Samplin...

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