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Álvaro Suárez; Arturo C. Martí; Kristina Zuza; Jenaro Guisasola – European Journal of Physics Education, 2023
The question of the sources of electric and magnetic fields and their causes has been discussed extensively in the literature over the last decades. In this article, we approach this problem from the unified treatment of electromagnetic fields emphasizing the role of their sources in accordance with the cause-effect relationships. First, we…
Descriptors: Energy, Magnets, Science Instruction, Equations (Mathematics)
Pispinis, Dimitrios – European Journal of Physics Education, 2019
We look at the problem of the minimum speed of projectiles in a constant gravitational field. In the absence of resistance, the problem may be studied in the frame of a high school curriculum. One needs only Newton's laws and a minimum amount of analytic geometry to compute the orbit, which turns out to be parabolic. Furthermore, in case the…
Descriptors: Science Instruction, Secondary School Science, High Schools, Physics
Dean, Kevin – European Journal of Physics Education, 2018
The conical pendulum provides a rich source of theoretical and computational analysis and the present work presents a seamless continuation of the previous publication. The tension force F[subscript T] and centripetal force F[subscript C] are explored further in linearization analyses and the appropriate slopes are explained. A similar analysis is…
Descriptors: Science Instruction, Physics, Motion, Scientific Concepts
Dean, Kevin – European Journal of Physics Education, 2017
This paper represents a continuation of the theoretical and computational work from an earlier publication, with the present calculations using exactly the same physical values for the lengths L (0.435 m - 2.130 m) for the conical pendulum, mass m = 0.1111 kg, and with the local value of the acceleration due to gravity g = 9.789 ms[superscript…
Descriptors: Physics, Science Instruction, Graphs, Equations (Mathematics)
Dean, Kevin; Mathew, Jyothi – European Journal of Physics Education, 2016
A theoretical analysis is presented, showing the derivations of seven different linearization equations for the conical pendulum period "T", as a function of radial and angular parameters. Experimental data obtained over a large range of fixed conical pendulum lengths (0.435 m-2.130 m) are plotted with the theoretical lines and…
Descriptors: Equations (Mathematics), Motion, Science Experiments, Physics
Riggs, Peter J. – European Journal of Physics Education, 2013
Students often wrestle unsuccessfully with the task of correctly calculating momentum probability densities and have difficulty in understanding their interpretation. In the case of a particle in an "infinite" potential well, its momentum can take values that are not just those corresponding to the particle's quantised energies but…
Descriptors: Science Instruction, Scientific Concepts, Computation, Motion