Table 1: Data and Calculations Resistance at Resistance Room Heated Change in Length (mm) AL (mm) Room Temp. when Heated Temperature |Temperature Temperature RTm (2)
Table 1: Data and Calculations Resistance at Resistance Room Heated Change in Length (mm) AL (mm) Room Temp. when Heated Temperature |Temperature Temperature RTm (2) Rhot () Trm ( C. ) Thot ( C. ) AT ( C ) Copper 702.5 90 107000 7210 23.5 92 68.5 Steel 705.0 62 104900 7390 24.0 91.5 67.5 Aluminum 705.0 1.18 105200 7450 24.0 91.0 67.0 Table 2: Results Expert Accepte Experimental Accepted mental d Thermal Thermal % Error % Error (%) Therma Therma Coefficient a Coefficient a (%) 1 (1/C.) (1/C') Cooffini Cooffini Copper 1.8703e-5 1.76e-5 6.267 Copper 1.8703e-5 1.76e-5 0.06267 Steel 1.3029e-5 1.3e-5 0.223 Steel 1.3029e-5 1.3e-5 0.00223 Aluminum 2.4981e-5 2.34e-5 6.756 Aluminum2.4981e-5 2.34e-5 0.067561. Characterize your experimental errors - large or small? Similar percent errors consistently below or above expected, or all over the place? A W N 00 7 UT 10 11 12 2. List at least three possible sources of error in this experiment, besides yourself or the instruments. Suggest a means of eliminating or accounting for at 13 least one of them. 14 15 16 17 18 19 20 21 3. Considering your answers to both of the previous two questions, what do you think was likely the most significant source of your experimental 22 error? Explain. 23 24 25 26 27 28 29 30 31
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