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Sensor Cart Collisions and the Conservation Laws
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| Pengarang | : | Roger F. Larson |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 599-603 |
| Abstrak | : | Collision studies conducted with low-friction dynamics carts equipped with Bluetooth motion encoders produce very clean velocity–time data. This technology makes it possible for students to analyze collisions to determine which collision types illustrate the laws of conservation of momentum and energy. Physics instructors often include the study of completely inelastic collisions and elastic collisions in their lab classes. Adding a study of the common inelastic collision and the more complex superelastic collision will give students experience with the four fundamental collision categories. Rather than rely on teachers to inform students in which situations the laws of conservation of momentum and energy apply, learners can now collect reliable collision data and formulate their own conclusions. |
Streamlining Physics Problem Generation to Support Physics Teachers in Using Generative Artificial Intelligence
| Pengarang | : | Shams El-Adawy; Isaac Liao; Vedang Lad; Mohamed Abdelhafez; Peter Dourmashkin |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 595-598 |
| Abstrak | : | The rapid advancement of large language models (LLMs) presents a unique opportunity for educators to find ways to include artificial intelligence (AI) in physics course design. By critically engaging with LLMs to help with the task of generating problems, physics teachers can not only model a potentially effective way to use LLMs for other teachers, but also showcase to students ways to productively engage with LLMs. This article presents a workflow with two different starting points to generate physics problems using ChatGPT 3.5. The first initialization involves interacting with ChatGPT in a conversational manner, guiding iterative problem creation by breaking tasks into smaller tasks. The second initialization harnesses ChatGPT’s generative abilities, aligning problem generation with established problem styles by instructing the model to emulate contexts from question banks. We discuss the implications of this workflow for other physics instructors exploring productive ways to incorporate the use of AI in their own course design. |
Treatment of Statistics and Error in Introductory Physics Lab Manuals: A Comparison Study
| Pengarang | : | Jimmy Gonzalez Nuñez; John R. Walkup |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 591-594 |
| Abstrak | : | Many students experience their first practical application of statistics and error analysis conducting activities in their introductory physics laboratory courses, where they learn definitions, concepts, and skills they will use for the rest of their academic and postgraduate career. This study analyzed the use of statistical methods in introductory physics labs by comparing a collection of lab manuals from two-year community colleges and four-year universities. Our analysis reveals substantial inconsistencies in the treatment of statistics and error among the sampled manuals for labs aimed at science and engineering students. Most notably, wide disparities surfaced in terminology and relationships, along with an absence of some topics that warrant a concerted treatment. |
Impulsive Magnetic Damping: Linear Damping of a Pendulum
| Pengarang | : | Richard Ignace; Gary D. Henson |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 587-590 |
| Abstrak | : | The subject and application of physical concepts such as impulse and harmonic motion are common to physics content for a broad range of levels. For the behavior of oscillations, it is standard to expound on frictional damping leading to exponential decay in amplitude and mechanical energy. Faraday’s induction is likewise ubiquitous in the realm of electromagnetism. In this article, we combine the three concepts of impulse, damping, and induction in a consideration of discrete behavior as opposed to one that is continuous, for instructional use that can range from demonstration to student projects. |
Student Survey on Video Lectures for College Physics 1—Mechanics
| Pengarang | : | Brian Woodahl |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 583-586 |
| Abstrak | : | The COVID-19 pandemic, in particular the social-distancing measures of the 2020–2021 academic calendar, forced many departments,1–4 including ours, to present online courses for introductory physics. These online courses could be presented synchronously using an environment offered by, for instance, Zoom, or in an asynchronous presentation, using prerecorded video lectures hosted, for example, by YouTube. For this particular research, we used the latter, the asynchronous presentation using prerecorded video lectures. The goal of this study was to determine whether students found these video lectures to be an acceptable method of delivery of the course content compared with the traditional in-person lectures. |
Exploring Brownian Motion with a Millikan Oil Drop Apparatus
| Pengarang | : | Jiazhong Zeng; Mingzhen Shao; Xiaoqi Zeng |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 579-582 |
| Abstrak | : | Historically, Brownian motion provided strong support for the atomic nature of matter.1–3 In 2021, German oceanographer Hasselmann was awarded the Nobel Prize in Physics for his contributions to climate evolution modeling. In analogy with Brownian motion, Hasselmann built the stochastic climate model and explained long-term climate variability caused by the short-term fluctuations of the atmosphere.3 Hasselmann’s stochastic climate model shows the application of Brownian motion theory in complex systems. In pedagogy, demonstrations and measurements of Brownian motion have been widely reported,4–9 for example, demonstrating a random walk4–7 and measuring Avogadro’s6–8 and Boltzmann’s9 constants. Recently, video recording and analysis4–7,9 made quantitative analysis of Brownian motion more convenient. In this paper, we study Brownian motion with a Millikan oil drop apparatus. We were motivated to develop this education module by errors on the oil drop experiment from Brownian motion. |
Physics of Brittle Failure during Impact
| Pengarang | : | Hollis Williams |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 575-578 |
| Abstrak | : | In daily life, we are familiar with the fact that a glass or a ceramic mug that is knocked from a table shatters when it hits the ground. However, the phenomenology behind this event is perhaps less familiar due to the speed with which it happens. Examination of the recovered fragments shows that the mug generally breaks up into several large pieces with some other smaller chips as well, but how does this happen? In this article, we use video analysis to study the physics of this process in more detail, showing that the object typically bounces before splitting into pieces, with the splitting proceeding by crack propagation. We obtain rough estimates for speed of fracture propagation in ceramic materials and glass that are consistent with previous experimental studies. |
Use of a Scrapped Hard Disk Drive for Physics Teaching
| Pengarang | : | Lian Hu |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 571-574 |
| Abstrak | : | A mechanical hard disk drive (HDD) is a common electronic product, and the working principle of the HDD is good physics teaching material.1,2 A damaged disk surface will cause the mechanical hard disk to be scrapped, but its mechanical and electrical structures are usually intact. So, some people repurpose the scrapped HDD into tools or ornaments. Typically, an HDD includes a high-quality spindle motor that rotates the disk and a voice coil motor (VCM) that positions the voice coil since the mechanical hard drive is a high-tech product. These two components each have a fixed axis, the spindle (brushless) motor rotates, and the VCM can swing around its axis |
A Beautiful Pictorial Approach to Explore Free-Fall Motion in a Classroom
| Pengarang | : | Yajun Wei; Dawei Zhang; Qingsong Zou; Zhiquan Xiong |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 567-570 |
| Abstrak | : | Motion with uniform acceleration is often considered a dull topic in elementary physics. This student perception probably arises because the emphasis is primarily placed on computing relevant quantities, rather than providing conceptual context or real-world physics applications. Fortunately, there is a type of motion with uniform acceleration that occurs in everyday life: free-fall motion. This aspect makes the topic more intriguing. In this work, we present a lesson design that incorporates a colorful demonstration and creative data processing to explore free-fall motion within a classroom setting. |
Learning Physics via Movies Incorporating Atomic Energy
| Pengarang | : | Kelly Krieble |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 564-566 |
| Abstrak | : | The use of mainstream movies in science courses has typically been to showcase good or bad science illustrated in those films.1–6 Indeed, many newer films use technical advisors to ensure that special effects and scenes are as correct as possible, science-wise. Educators have also found creative ways to examine other aspects of movies, such as historical and political contexts related to science. |