Density Measurement - Lab Report

Measurement Lab: Density Measuring the Mass Object 1 (Cube) Object 2 (cylinder) Mass (digital) 66.6 g 204.4 g Mass (Balance Scale) 66.5 g 206.0 g Determining the Volume Object 1 - Cube Method Length L (cm) Width W (cm) Meter Stick 3.1 cm 1.5 cm Caliper 3.18 cm 1.59 cm Object 2 - Cylinder Method Ridius R (cm) Height H(cm) Meter Stick 1.1 cm 6.2 cm Caliper 1.12 cm 6.34 cm V 1 (Stick)= (21.9)cm 3 ±(1.7)cm 3 V 1 (Caliper)=(24.72 )cm 3 ±(0.18)cm 3 V 3 (Stick)= (23.6 )cm 3 ±(3.1)cm 3 V 3 (Caliper)=(24.98)cm 3 ±(0.32)cm 3 ∆?=?√((∆𝐿/𝐿)^2+ (∆ ? / ? )^2 + (∆ ? / ? )^2 ) ∆?=?√((∆𝑅/𝑅)^2+ (∆ 𝑅 / 𝑅 )^2 + (∆ ? / ? )^2 )

Group Members Veronica teixeira Caitlyn anai Haley Uncertainty () 0.1 0.1 The calculation Height H (cm) Uncertainty Mass(digital)/Volume(Caliper) 4.7 cm 0.1 Mass(Balance scale)/Volume(meter stick) 4.89 cm 0.01 The density of object 2 (g/cm3) Uncertainty Mass(digital)/Volume(Caliper) 0.1 Mass(Balance scale)/Volume(meter stick) 0.01 The density of object 1 (g/cm 3 ) ∆?=?√((∆?/?)^2+ (∆ ? / ? )^2 )

Anwer questions p17 1. For object 1 (cube) the digital scale gave us a density with a closer value to the one TA provided, we got 2.69 and the value was 2.70. It is very close, the reason could be measurements with the digital scale and the volume with the caliper were more accu we did not have much systematic or random errors while performing it. For object 2 (cylinder) the balance scale gave us a density of 8.7 g/cm^3 and the one TA provide is 8.73 g/cm^3. I think that the balance scale and the meterstick gave us a accurate value for this material because we might have had errors while measuring w digital and the caliper. 2. The hypothesis stated said that "regardless of the symmetry of a pure solid substa density determined by the experiment should be the same". After comparing our res other groups data we can say that the hypothesis is true, we got similar densities for objects and they were different symmetries but made with the same materials.

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