Expansion of the tube given by the dial gauge noting

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expansion of the tube (given by the dial gauge noting 1 o = 0.01mm of tube expansion). The students then repeated the experiment for each different tubing material. Equipment: 1.Collection cup 2. Thermal expansion apparatus 3. Ohmmeter 4. Thermoplastic tubing 5. Banana plug patch chords 6. Steel tube 7. Steam generator 8. Styrofoam holder Questions : 1) Compare these values with your experimental values. What is the percent discrepancy in each case? Is your experimental error consistently high or low? Speculate on possible sources of error. The percent discrepancies are displayed in our Analysis and Discussion sections. They range from 9% to 45%, and in every case the experimental value was consistently high. Because of this, it is likely that the biggest source of error is that the system was allowed to overheat, causing an inaccurate measurement. 2) From your result, derive the coefficients of volume expansion for copper, aluminum, and steel. Volume is proportional to the dimensions of a measured object cubed. As such we can use the relation of the length cubed and change in length cubed to come up with a coefficient of volumetric expansion. 3) The Golden Gate Bridge in San Francisco, California, is 4200 ft in length.
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