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The Unexpected Behavior of a Projectiles Distance from Its Launch Point
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| Pengarang | : | John Andrew Milsom |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 63 (No. 2) |
| Halaman | : | 119-121 |
| Abstrak | : | Every introductory physics student studies projectile motion where the gravitational acceleration is constant. Many articles highlight interesting features not discussed in the texts. For example, one can find analyses of projectile trajectories to determine the firing angle leading to the maximum path length or to determine the average speed.1–3 Similarly, one can find descriptions of “hidden” ellipses or circles found when one compares the trajectories of projectiles fired at different angles.4–7 One can even find a geometrical proof for why maximum range is achieved when the initial and final velocities are perpendicular.8 In this work, we examine the surprising behavior of the projectile’s distance from the origin (r) during its flight and provide some exercises for your students. |
A Golf Ball Trajectory Experiment
| Pengarang | : | Peter F. Hinrichsen |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 63 (No. 2) |
| Halaman | : | 114-118 |
| Abstrak | : | Many sports,1,2 including football, soccer, basketball, baseball,3 tennis,4 and golf,5,6 involve trajectories,7 and students’ interest in these sports can be used to advantage when investigating trajectories. We therefore introduced the present experiment,8 in which the students make measurements of the flight times, maximum heights, and ranges of golf balls launched at a variety of angles across a football field by a slingshot. Because this involves a large amount of data, the experiment was conceived as a cooperative effort for the whole class, and students learned to work as parts of teams, which then presented their results to the whole class. The students also learned that real-world experiments require planning, organization, cooperation, and some public relations. |
From Applied Physics to Interdisciplinary Activities for a Climate Science Itinerary in the First Year of College
| Pengarang | : | Hidayanto, Taufiq |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 63 (No. 2) |
| Halaman | : | 110-113 |
| Abstrak | : | In this article, we present two activities related to energy issues and climate change as a part of the first-year undergraduate physics curriculum: the first activity deals with energy issues through experiments and Fermi questions on physics, transport, and climate change, whereas the second activity aims to introduce a systemic approach through an interdisciplinary cooperative serious game called the climate fresk. In this article, we present teaching materials and student feedback. Together, these activities serve not only to raise awareness about climate change but also to pave the way for a climate science itinerary for physics students working both on their physics skills related to climate issues and also on a more systemic interdisciplinary approach to climate change. |
Don’t Throw Away Your Old Overhead Projectors: Upcycle to Easy Physics Demos Instead
| Pengarang | : | Sarah Lynn McGregor; Keith Goodale |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 63 (No. 2) |
| Halaman | : | 107-109 |
| Abstrak | : | Demonstrations play a crucial role in the physics classroom, providing students with tangible experiences and visual representations of abstract concepts, especially when they are actively engaged with the demonstrations.1–3 By observing demonstrations, students can witness the principles of physics in action, reinforcing their understanding of fundamental laws and theories, helping to bridge the gap between theory and practice, building conceptual knowledge, and battling misconceptions around phenomena. However, demonstrations can sometimes be tricky to present or not easily scalable to large classroom audiences. |
The Metabolism of Dinosaurs Running at Their Maximum Speed
| Pengarang | : | Scott A. Lee |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 63 (No. 2) |
| Halaman | : | 102-106 |
| Abstrak | : | Many, if not all, dinosaurs are believed to have been endothermic (“warm-blooded”) animals,1,2 permitting a very active lifestyle. We develop a methodology that connects the metabolism of a running animal with its kinetic energy, permitting the students to determine this maximum metabolism of dinosaurs (including the famous Velociraptor) running as fast as they could. This fun activity empowers the students and gives insight into the lives of these magnificent animals. Dinosaurs are always a popular classroom topic. Life science majors are particularly intrigued by this example. Techniques to handle significant uncertainties are also used in this problem. |
Adventures with Close Up Lenses
| Pengarang | : | Thomas B. Greenslade, Jr. |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 63 (No. 2) |
| Halaman | : | 99-101 |
| Abstrak | : | In my book collection are several editions of A Boy’s Playbook of Science by John Henry Pepper.1 In the 1860 edition is the illustration in Fig. 1. Here we see an older couple from the rural countryside paying a visit to the seashore. In the figure is a vertical opaque projector. In the course of replicating this device, albeit on a smaller scale, new uses for the close-up lenses that are used with my own digital single-lens reflex camera were discovered. In this article, after reminding readers of the physics of close-up lenses, these uses will be described: the vertical opaque projector and the telescope. |
Jack Reacher and the Deployment of an Airbag
| Pengarang | : | Gregory A. DiLisi; Richard A. Rarick |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 63 (No. 2) |
| Halaman | : | 95-98 |
| Abstrak | : | As teachers of introductory physics and engineering courses, we are always looking for ways to bring current events into our classrooms. We are especially interested in finding examples where basic principles of physics can be used to cast skepticism or validation on assertions made by celebrities, politicians, or professional athletes. In fact, over the past several years, various articles in The Physics Teacher have shown how a forensics-style reexamination of popular or historic events can be used as a motivation to introduce fundamental concepts to students in introductory physics and engineering courses.1–9 These exercises afford students the opportunity to apply basic principles of physics to explore significant events or unsolved mysteries and potentially settle such debates. |
Leveraging Equity and Inclusion to Demystify and Diversify Undergraduate Quantum Science Education
| Pengarang | : | Mhlambululi Mafu; Farai Mazhandu |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 63 (No. 2) |
| Halaman | : | 90-94 |
| Abstrak | : | Quantum science and technology has gained significant importance in recent years due to its increasing potential to provide new possibilities and advanced applications in various technological fields. This growing importance has made it essential for most K–12 schools and higher education institutions to include quantum science in their curricula. Despite unprecedented progress in revolutionizing various fields, quantum science remains relatively exclusive and inaccessible to underrepresented minority groups—Blacks or African Americans, Hispanics or Latinos, and American Indians or Alaska Natives.1 This is due to various inherent systematic social, economic, and power structures in most regions. Moreover, due to its conceptual complexity and abstract mathematical nature, quantum science presents a unique set of challenges for undergraduate science education. |
Hands-On Quantum: Teaching Core Quantum Concepts with Bloch Cubes
| Pengarang | : | Jeremy Levy; Chandralekha Singh |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 63 (No. 2) |
| Halaman | : | 85-89 |
| Abstrak | : | Quantum mechanics is a notoriously abstract subject, and therefore challenging to teach at pre-college and introductory college levels. Here we introduce the Bloch cube, a hands-on educational tool that can illustrate key quantum concepts without equations. A series of videos has been created showing how Bloch cubes can be used to teach concepts such as quantum measurement, quantum dynamics, pure states vs. mixed states, and quantum decoherence. Bloch cube states can assist in the development of more sophisticated concepts such as the Bloch sphere, which plays a central role in the quantum mechanics of two-state systems and quantum information science. |
Fluid experiments with a Utube or Ushaped density manometer
| Pengarang | : | James Lincoln |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 63 (No. 3) |
| Halaman | : | 218-219 |
| Abstrak | : | A density manometer allows for the investigation of fluid pressure and the determination of the density of a liquid by direct comparison. Often, the U-shaped tube is connected by clear tubing to a balloon-like elastic drum probe, which can be inserted into a tall vase of water (Fig. 1). As the probe is dipped, the pressure change is indicated by the movement of the fluid in the U-shaped tube, which is open on one end to the atmosphere. In this article, I detail several experiments and give advice for demonstrations and problems using this device, which pops up often in fluid physics problems,1 such as those found in the new AP Physics 1 curriculum,2,3 but with which few of us may have first-hand experience. |