Determining The Density Of A Polystyrene Sphere With...

Determining the Density of a Polystyrene Sphere with Precision and Accuracy Abstract: The objective of the lab is to determine the volumes of the polystyrene spheres with three different measuring tools: Water Displacement, Analytical Scale, and Triple Beam Balance Scale. The experiment is meant to help understand the concept and application of precision and accuracy in experimental measurements. Accuracy is a measure of how closely the results of repeated measurements are to the true value of what is being measured. Precision is the variability in the results from the repeated measurements, and how close the repeated measurements were to one another. In this lab, the method for measuring the volume of the polystyrene spheres is done with the previously stated tools: Water Displacement, Analytical Scale, and Triple Beam Balance Scale. The standard deviation for the entire classes volumes and masses are recorded to determine the densities. Introduction: Accuracy and precision were the major aspects of the lab. Accuracy is how close the average of the measured values are to the actual value. Precision is the closeness of repeated measurements. In the lab, the aim was to get as close as possible with both accuracy and precision when determining the mass and volume of the spheres. The mass was determined by weighing the spheres on the Analytical Scale and Triple Beam Balance Scale. The volume is determined by measuring with a ruler and by water displacement. The standardShow MoreRelated1000 Word Essay85965 Words   |  344 Pages600-8-22 (AR 600-9 September 2006 / 3-2 / PDF 12) How often should soldiers be weighed? A soldier should be weighed when they take the APFT or at least every six months (AR 600-9 September 2006 / 3-1 / PDF 9) Define Tape Test: The method of determining the percent of body fat on a soldier. What circumference sites are used for taping male and female soldiers? Male- Abdomen and Neck Female- Neck, Waist and Hip (largest portion of the protruding buttock) (AR 600-9 September 2006 / B-5 / PDF 45) Read MoreStrategic Marketing Management337596 Words   |  1351 Pagesperspective from a member of the establishment in the early twentieth century, it is not surprising that the vision of writers such as Jules Verne and H.G. Wells was mocked, yet their premonitions have often come to be justified, with surprising speed and accuracy in some instances. We did, for example, have Concorde, despite Professor Pickering’s pessimism. It should not be expected that any particular vision of the future will be correct in every detail, nor necessarily very detailed in its conception. Writing