Autors: Stefanov, I. Ж., Donkov S., Denev, N. P.
Title: ISOCHORIC COOLING OF AIR IN THE UNIVERSITY PHYSICS LABORATORY
Keywords: Clement-Desormes, isochoric process, laboratory exercise, modelling, simple regression, thermodynamics

Abstract: In this paper an alternative way of conducting the physics laboratory exercise for determining the adiabatic index of air using the Clement-Desormes method is proposed. The process of isochoric cooling of air has been studied in terms of the dependence of pressure on time, and hence temperature on time, since it is proportional to pressure at a constant volume and mass of air. A theoretical model of the considered process was also made. The experimental results were processed statistically. The coefficient of determination R2 and the F-test statistic were calculated and their values indicate a very good agreement between theory and experiment. The analysis of the residuals, however, implies that the model could be further improved through the inclusion of higher order terms.

References

  1. D. B. Sivukhin, Obshii kurs fiziki. Tom II. Termodinamika i molekuliarnaia fizika, 5th edn. (Fiz-matlit, Moscow, 2005) (in Russian).
  2. M. Oprea, C. Miron, Mobile phones in the modern teaching of physics, Rom. Rep. Phys. 66, 1236 (2014).
  3. Marilena Colt, Corina Radu, Ovidiu Toma, Cristina Miron, Vlad-Andrei Antohe, Integrating smartphone and hands-on activities to real experiments in physics, Rom. Rep. Phys. 72, 905 (2020).
  4. M. Hart, M. G. Kuzyk, Collecting data with a mobile phone: Studies of mechanical laws such as energy and momentum conservation, Am. J. Phys. 88, 948 (2020).
  5. Corina Radu, Ovidiu Toma, Stefan Antohe, Vlad-Andrei Antohe, Cristina Miron, Physics classes enhanced by smartphone experiments, Rom. Rep. Phys. 74, 908 (2022).
  6. R. Hermana, Spreadsheet physics: Examples in meteorology and planetary science, Am. J. Phys. 77, 1124 (2009).
  7. Adriana Radu, I. Grigore, C. Miron, V. Barna, Excel didactic tools for the study of the circular motion, Rom. Rep. Phys. 75, 904 (2023).
  8. K. F. Riley, M. P. Hobson, S. J. Bence, Mathematical Methods for Physics and Engineering, 3rd edn. (Cambridge University Press, 2006).
  9. Residual Analysis of Simple Regression, ProfTDub, YouTube, https://youtu.be/vM13uarpcuQ.
  10. Simple Linear Regression, Pat Obi, YouTube, https://is.gd/SGGImc (The shortened link has been generated by the is.gd website.).
  11. Interpreting Linear Regression Results, Sergio Garcia, PhD, YouTube, https://youtu.be/rLkysIyO7-U.
  12. J. Frost, Regression Analysis: An Intuitive Guide, 1st ed. (Jim Frost, MS, 2019).
  13. J. Schmuller, Statistical Analysis with Excel For Dummies, 5th ed. (John Wiley & Sons, Inc, 2022).
  14. P. H. Westfall, A. L. Arias, Understanding Regression Analysis, 1st ed. (Taylor & Francis Group, LLC, 2020).

Issue

Romanian Reports in Physics, vol. 76, pp. 902, 2024, , https://doi.org/10.59277/RomRepPhys.2024.76.902

Copyright Editura Academiei Romane

Вид: статия в списание, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus