Basic

Basic Purpose: The objective of this experiment is to prevention egress the mount, burdensomeness, diam, radius, plenty, engrossment of a cen beat whether it was produced in the lead and by and by 1982. The legitimate density for before 1982 penny is 6.91 g/ cm3 and for afterward 1982 is 7.18 g/ cm3. The penny that was apply in this experiment was a 1985 penny thus we would occasion the after 1982 density accepted to calculate the percentage error. The causality why we be beat the pennies because, before 1982 pennies were made of 95% fuzz and 5% atomic number 30 but copper became big-ticket(prenominal) and it would cost more than to make pennies thence what its value is worth. therefrom the government changes the materials of the pennies by utilize ab out 97.5% zinc and 2.5% copper to save the cost of using copper. By changing the materials that were utilise to create the penny it change the weight a little. To uprise the density of a penny we would have to figure out the hole and divided the volume of the penny to get the density calculation. The tools we would be using are the vernier outperform leaf, meter outfox to find the diameter, radius and the thickness and a triple irradiation scale to measure the mass. To take care the mass of the penny we employ the triple beam scale to weight it twice and conk out the first mag clip it weight about 2.5 gram.

thence the stand by time it weight same as the first time around 2.6 gram. To calculate the total of the mass we add the touchst peerless and only(a) of both mass and divide it by two. The average of the mass was 2.55 gram. Next we need to dete! rmine the thickness of the penny where we measure it twice. Using the vernier scale by inserting the penny in the midst of the vernier we measure it about 1.5 mm or converting it into .15cm. Then the second time we got close to .15 cm. The thickness average is .15cm. Since the penny is a shape of piston chamber we would use the cylinder volume, V= (?r2 h).To find the radius, we need to determine what is the penny diameter because one diameter = 2 radius. Using the vernier scale to calculate...If you pauperization to get a full essay, order it on our website: OrderCustomPaper.com

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