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D'Anna, Michele; Fuchs, Hans U.; Corni, Federico – Physics Education, 2021
A quantitative experiment where we measure the acceleration of spheres of radius "R" rolling on an inclined U-shaped profile of width "2D" is presented. For a given inclination, we examine the behaviour of four solid spheres having different diameters; in contrast to what is usually assumed to be the case, the experimental…
Descriptors: Science Instruction, Physics, Motion, Scientific Concepts
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Su, Jun; Wang, Weiguo; Wang, Sihui – Physics Education, 2019
In a spiral galaxy, the stars move in a circular motion around the galactic center, and the relation between velocity and the orbital radius is referred to as the rotation curve. Previous astronomical observation data indicate that the rotation curve is flat at the periphery of the galaxy, which completely dissatisfies Keplerian decline. Assuming…
Descriptors: Visualization, Scientific Concepts, Astronomy, Motion
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Atkin, Keith – Physics Education, 2020
In this paper it is demonstrated how the free, and easily downloadable, software package called SMath Studio can be used to set up a model of alpha-particle scattering. The basic physics of the motion of an alpha-particle in the nuclear coulomb field is used to produce a simple stepwise computer algorithm which, in conjunction with a novel set of…
Descriptors: Computer Software, Physics, Science Instruction, Mathematics Instruction
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Suárez, Álvaro; Baccino, Daniel; Martí, Arturo C. – Physics Education, 2019
Simple experiments for which differential equations cannot be solved analytically can be addressed using an effective model that satisfactorily reproduces the experimental data. In this work, the 1D kinematics of a remote-control model (toy) car was studied experimentally and its dynamical equation modelled. In the experiment, maximum power was…
Descriptors: Models, Motion, Video Technology, Equations (Mathematics)
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Yan, Zixiang; Xia, Heming; Lan, Yueheng; Xiao, Jinghua – Physics Education, 2018
A cylinder rolling down an inclined board is a commonly seen and interesting object to study and it is also easy to experiment with and model. Following what has become a popular practice, we use smartphones to measure the angular acceleration of a cylinder rolling down a plane of different inclining angles. The friction force deviates from the…
Descriptors: Kinetics, Science Instruction, Models, Physics
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Kaur, Tejinder; Blair, David; Moschilla, John; Stannard, Warren; Zadnik, Marjan – Physics Education, 2017
The Einstein-First project aims to change the paradigm of school science teaching through the introduction of modern Einsteinian concepts of space and time, gravity and quanta at an early age. These concepts are rarely taught to school students despite their central importance to modern science and technology. The key to implementing the…
Descriptors: Science Instruction, Physics, Scientific Concepts, Logical Thinking
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Oliveira, J. B.; Simeão Carvalho, P.; Mota, M. F.; Quintas, M. J. – Physics Education, 2015
This study is about the dynamics of a sliding ladder leaning against a vertical wall. The results are understood by considering the motion divided in two parts: (i) for 0 = t = t[subscript s] with one degree of freedom, and (ii) for t > t[subscript s] with two degrees of freedom, where the separation is determined by the instance t[subscript…
Descriptors: Scientific Concepts, Mechanics (Physics), Motion, Models
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Menger, Fredric M.; Rizvi, Syed A. A. – Physics Education, 2016
The motions of Newton's cradle, consisting of several steel balls hanging side-by-side, have been analysed in terms of a sound pulse that travels via points of contact among the balls. This presupposes a focused energy beam. When the pulse reaches the fifth and final ball, the energy disperses and dislocates the ball with a trajectory equivalent…
Descriptors: Physics, Motion, Kinetics, Science Experiments
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Xu, Beichen; Su, Jun; Wang, Weiguo – Physics Education, 2018
Cosmic expansion is an important concept in astronomy. For ease of understanding, astronomers generally draw an analogy between cosmic expansion and the expansion of a spherical surface in 3D space. This study theoretically and experimentally investigates the laws governing the motion of particles on the surface of a balloon during expansion.…
Descriptors: Physics, Science Instruction, Astronomy, Motion
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Wee, Loo Kang; Lee, Tat Leong; Chew, Charles; Wong, Darren; Tan, Samuel – Physics Education, 2015
This paper reports a computer model simulation created using Easy Java Simulation (EJS) for learners to visualize how the steady-state amplitude of a driven oscillating system varies with the frequency of the periodic driving force. The simulation shows (N = 100) identical spring-mass systems being subjected to (1) a periodic driving force of…
Descriptors: Foreign Countries, Computer Simulation, Physics, Motion
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Rovšek, Barbara; Guštin, Andrej – Physics Education, 2018
An astronomy "experiment" composed of three parts is described in the article. Being given necessary data a simple model of inner planets of the solar system is made in the first part with planets' circular orbits using appropriate scale. In the second part revolution of the figurines used as model representations of the planets along…
Descriptors: Motion, Scientific Concepts, Scientific Principles, Science Activities
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Benacka, Jan – Physics Education, 2017
This paper gives an account of an experiment in which thirty-three high school students of ages 17-19 developed spreadsheet numerical models of satellite and space probe motion. The models are free to download. A survey was carried out to find out the students' opinion of the lessons.
Descriptors: Science Instruction, High Schools, Secondary School Science, Physics
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Rodrigues, Hilário; Panza, Nelson; Portes, Dirceu; Soares, Alexandre – Physics Education, 2014
This paper is essentially about the general form of Newton's second law for variable mass problems. We develop a model for describing the motion of the one-dimensional oscillator with a variable mass within the framework of classroom physics. We present a simple numerical procedure for the solution of the equation of motion of the system to…
Descriptors: Physics, Scientific Principles, Models, Mechanics (Physics)
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Wee, Loo Kang; Goh, Giam Hwee – Physics Education, 2013
We develop an Easy Java Simulation (EJS) model for students to visualize geostationary orbits near Earth, modelled using a Java 3D implementation of the EJS 3D library. The simplified physics model is described and simulated using a simple constant angular velocity equation. We discuss four computer model design ideas: (1) a simple and realistic…
Descriptors: Physics, Computers, Earth Science, Satellites (Aerospace)
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Wee, Loo Kang – Physics Education, 2012
We develop an Easy Java Simulation (EJS) model for students to experience the physics of idealized one-dimensional collision carts. The physics model is described and simulated by both continuous dynamics and discrete transition during collision. In designing the simulations, we discuss briefly three pedagogical considerations namely (1) a…
Descriptors: Physics, College Science, Experiential Learning, Feedback (Response)
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