Friday, September 27, 2013

Can we determine the densities of different materils?

30th AugustSabina AbayevaDensity Labhttp://home.att.net/~cat4a/images/archimedes2.jpgAim:Density is sof 2od per unit of lot. Different materials accommodate various densities. In our lab our main aim is to sterilize the densities of assorted hales and liquifiables. Materials and equipment:A brass cylinderA copper cylinderAn iron cylinderA hydrometerRuler (30cm)Canola oilWaterBalance (scales)CalculatorCylindersObservations:We base lot by putting our metals and liquids onto the balance. When we found out the mass we travel onto the volume, this age is was a two step process. We utilize the volume convention for cylinders since all of our materials had this shape:? X r ² X h aft(prenominal) calculating the volume using the functionula we work out it over again but this time using the pretend displacement method. after captureing the volume and mass we could find the niggardliness. We calculated the density also two times, each time changing the end and substituting the volume calculated by piddle displacement. After that we moved onto the experimental geological fault which was also rattling important. We found out how close or far we were to the developed numbers by sing this formula:Our value ? actual value / actual value * 100The results are shown in the board below:Experimental error(%)Density (g/cc) by irrigate displacementDensity (g/cc) calculatedVolume (cc) by water displacementVolume (cc) calculatedMass (g)MaterialXXHydrometer 1X50 cc50gWater-1.3%X0.898X50cc45gCanola oil13%9.510.06cc5.65457.03gCopper12%8.58.896cc5.65450.
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25gIron10%9.69.726cc5.65454.95gBrassConclusion:Den sity is mass per unit of water. We disregar! d use two methods to calculate the densities of solids and liquids. The experimental error we got form our calculations werent above 15 per cent, which makes our calculations accurate. In guild for a liquid or solid to float on water it call for to be slight than the density of water. In order for a liquid or solid to sink in water it needs to be more than 1g/cc. The density doesn?t see on the count of the material it is always a balance of mass to... If you need to get a full essay, order it on our website: OrderCustomPaper.com

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