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Titre :	The Resting Breathing Rate of the Dinosaur Plateosaurus trossingensis via Conservation of Energy (2023)
Auteurs :	Scott Lee ; Justyna Slowiak-Morkovina
Type de document :	Article
Dans :	The Physics Teacher (03/61, Mars 2023)
Article en page(s) :	p. 166-169
Note générale :	doi: https://doi.org/10.1119/5.0077948
Langues:	Anglais
Résumé :	Conservation of energy is one of the foundations of science, and in this paper, we use this principle to estimate the resting breathing rate of the dinosaur Plateosaurus trossingensis (see Fig. 1). Animals produce the energy necessary for life via chemical reactions in which biomolecules (such as glucose) react with oxygen to release CO2, H2O, and energy. The metabolism is determined from the animal’s reported mass growth curve (the mass of the animal as a function of age during its juvenile growth) using a model based on conservation of energy. The metabolism reveals the rate at which oxygen is used by the animal. The efficiency of oxygen extraction is assumed to be the same as observed in modern birds (which have a very efficient “one-way” breathing modality and are direct descendants of dinosaurs). Using the estimated concentration of oxygen in Earth’s atmosphere during the Late Triassic period yields the amount of air that P. trossingensis breathed each minute. Finally, the tidal volume (the volume of air inhaled in each breath) was used to calculate its resting breathing rate. This exercise has been used in introductory and intermediate courses on thermal physics, and the students find it empowering (and fun) to be able to gain this insight into the physiology of a dinosaur.
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Cote	Support	Localisation	Section	Disponibilité
The Physics Teacher. 03/61 (Mars 2023)	Périodique papier	Louvain-la-Neuve	Etagère des revues	Prêt autorisé Disponible

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Titre :	Teaching Electric Fields with a Simulation and Game (2023)
Auteurs :	Colleen Countryman ; Ted Karandja Mburu ; Liana Rodelli
Type de document :	Article
Dans :	The Physics Teacher (03/61, Mars 2023)
Article en page(s) :	p. 170-171
Note générale :	doi : https://doi.org/10.1119/5.0072538
Langues:	Anglais
Mots-clés:	Electromagnetism, Electric fields, Programming languages, User interfaces, Numerical differentiation, Design theory, Educational technology
Résumé :	Electric fields are a notoriously difficult concept for introductory physics students. Because of their lack of tangibility, electric fields are often perceived as being abstract and challenging to grasp.
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Cote	Support	Localisation	Section	Disponibilité
The Physics Teacher. 03/61 (Mars 2023)	Périodique papier	Louvain-la-Neuve	Etagère des revues	Prêt autorisé Disponible

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Titre :	Coulomb’s Law: Augmented Reality Simulation (2023)
Auteurs :	Andrej Vidak ; Iva Movre Sapic ; Vladimir Dananic ; Jadranko Batista
Type de document :	Article
Dans :	The Physics Teacher (03/61, Mars 2023)
Article en page(s) :	p. 172-174
Note générale :	doi : https://doi.org/10.1119/5.0076101
Langues:	Anglais
Mots-clés:	Electrostatics, Fundamental constants, Inverse-square law, Computer simulation, Physics education research
Résumé :	Coulomb’s law is a typical representative of the inverse-square laws that appear in various learning contexts in physics. In the usual classroom setting, most students do not have the opportunity to experimentally discover the interdependence of variables described by this law. Recently, digital technologies have become more prevalent at all levels of education. Teachers and researchers are successfully using computer-based simulations to improve physics education. Augmented reality is one of the emerging digital technologies that have the potential to improve students’ understanding of a wide range of educational topics. Nevertheless, it is advisable that students and teachers are familiar with the most efficient use of selected digital tools before using augmented reality-enriched physics lectures. In this paper, we present our augmented reality simulation called CoulombsLawAR, which could be useful for teaching Coulomb’s law.
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The Physics Teacher. 03/61 (Mars 2023)	Périodique papier	Louvain-la-Neuve	Etagère des revues	Prêt autorisé Disponible

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Titre :	Effect of Angular Amplitude on the Result of a Pendulum Experiment (2023)
Auteurs :	Meng Pan ; Jie Zhang
Type de document :	Article
Dans :	The Physics Teacher (03/61, Mars 2023)
Article en page(s) :	p. 175-177
Note générale :	doi : https://doi.org/10.1119/5.0046992
Langues:	Anglais
Mots-clés:	MATLAB, Data analysis, Pendulum system
Résumé :	Measuring gravitational acceleration with a simple pendulum is a traditional mechanical experiment. With the improvement of measurement accuracy (such as the use of a photogate timer) and the improvement of calculation ability (such as the use of a computer for data analysis), some previously ignored factors may arise. This paper studies the effect of angular amplitude on the result of this simple pendulum experiment.
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The Physics Teacher. 03/61 (Mars 2023)	Périodique papier	Louvain-la-Neuve	Etagère des revues	Prêt autorisé Disponible

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Titre :	Pulling a Spool (2023)
Auteurs :	Carl E. Mungan
Type de document :	Article
Dans :	The Physics Teacher (03/61, Mars 2023)
Article en page(s) :	p. 178-181
Note générale :	doi : https://doi.org/10.1119/5.0042450
Langues:	Anglais
Mots-clés:	Point contacts, Newtonian mechanics, Rotational dynamics, Free-body diagrams, Education
Résumé :	A simple model for the kinetic frictional force on an object sliding across a surface is adopted in introductory physics. Its magnitude is given by a constant coefficient of kinetic friction multiplied by the normal force exerted on the object by the surface, and the force points opposite the direction that the object slides relative to the surface. In contrast, the standard model for the static frictional force is more complicated. There is no formula for its magnitude, but instead it can vary from zero up to some maximum value, as required to keep the point of contact of the object at rest relative to the surface it is on. Furthermore, it points in the direction opposite the way in which the object would slip at its point of contact if there were zero friction, but it is not always obvious which way that is. In an attempt to bypass these complications, students can make erroneous assumptions about the magnitude and direction of the static frictional force. To counter them, it is helpful to present some example that shows students that those assumptions need not hold. Such a system is a pulled spool that rolls without slipping on a horizontal table. Since the point of contact between the spool and the table does not slip, any frictional force between them must be static.
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The Physics Teacher. 03/61 (Mars 2023)	Périodique papier	Louvain-la-Neuve	Etagère des revues	Prêt autorisé Disponible

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Titre :	Orbital Decay in the Classroom (2023)
Auteurs :	Miguel Fiolhais ; Luis Gonzalez-Urbina ; Tomasz Milewski ; Carlos Chaparro ; Andrea Ferroglia
Type de document :	Article
Dans :	The Physics Teacher (03/61, Mars 2023)
Article en page(s) :	p. 182-185
Note générale :	doi : https://doi.org/10.1119/5.0063725
Langues:	Anglais
Mots-clés:	Mechanical energy, Atmospheric physics, Space station, Spacecrafts, Space instruments, Students, Learning and learning models, Educational facilities, Visual system, National Aeronautics and Space Administration
Résumé :	The objective of this paper is to provide a pedagogical framework for the phenomenon of orbital decay of satellites in low Earth orbit. The dynamics of orbital decay are derived considering atmospheric drag as the only dissipative mechanism and using an educational approach suitable for undergraduate calculus-based physics and engineering courses. The resulting nonlinear first-order differential equation for the altitude as a function of time is solved numerically for the isothermal-barotropic atmospheric model with a fixed scale height. The model is validated using the uncontrolled reentry data of the Chinese space station Tiangong-1.
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The Physics Teacher. 03/61 (Mars 2023)	Périodique papier	Louvain-la-Neuve	Etagère des revues	Prêt autorisé Disponible

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