4 seconds should be at half of 925mm subtracting the original height of 15mm or

4 seconds should be at half of 925mm subtracting the

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height at 89.4 seconds should be at half of 92.5mm (subtracting the original height of 1.5mm), or 46.25mm. At 90 seconds, the height was at 45mm. The height was not at 46 mm until after 90 seconds, meaning that there was an error. If you find the point for t = 89.4 , you will find that
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h = 44.8 mm . The percent error here was only 3.14%, as the answer was close to where it should have been. However, the percent error was not 0%, meaning that there were issues in the lab that could have changed the results. One source of error could have been human limitation. Our measurements went up very slowly, so the gaps between the lines were quite small. The measurements were small and they could have been measured wrong due to shaky hands or small slips. In addition, some results had to be rounded because they were between millimeter marks on the meter stick. When I measured the tape against the meter stick, the actual start of where the bottom of the graduated cylinder was could have been in a different place than the zero marking on the meter stick. I also could have marked slightly below or above the actual level of the beer while it was changing heights. Another source of error could have been probable errors, or uncertainties. As mentioned
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  • Fall '16
  • Garahan
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