Physics Definition and 987 Threads

Relevant video ##\Rightarrow## Physics questions and answers My answer to Q.2 Let's break down the problem and solve it step-by-step: 1. Find the dipole moment (p): The dipole moment is defined as the product of the charge (q) and the separation distance (d) between the charges. p = qd Here...

I am excited to join this fantastic community! My name is Sara, and I have been teaching physics at the high school level for the past 10 years. Helping children discover the beauty and logic of the physical world is one of my greatest passions. My favorite topics to teach include...

Hi! First time poster here, looking for some advice on how to optimize my CV for the title-stated goal. By “top-tier”, I have the big three of Princeton, MIT, and Columbia in mind. Those schools are the target because while I really love experimental work, I want a PhD that will give me the...

Fundamentally I'm struggling with the premise of the problem. Once I get that I think the math of solving the problem will be straight forward. But like I said I think the problem is fundamentally unsound. I hope to be proven wrong. initially there is no current in the lower branch of the...

TL;DR Summary: Any good? Oxford Dictionary of Physics 8th Edition Does anyone here have a copy of this? If so, any thoughts on it? I got the most recent edition recently (8th) which was published in 2019 so it's fairly up-to-date. It seems ok to me (a novice) for a quick reference guide. I...

I came across the forum while searching for information, and then I realized that this might be the kind of physics forum I was looking for

There are so many concepts in science, especially Physics, that make absolutely no sense to me unless I begin to study the underlying history of the concepts. So please correct me when I'm wrong because I'm sure I am sometimes. The first concept I think about is Voltage. I was extremely familiar...

I will ask physic questions.

I really like physics especially relativity and classical physics like Newton's laws. I have joined this forum to discuss and learn more about relativity, classical physics and the weird QM

Hi everyone, I am not sure if I have calculated task b correctly: The Lagrange function has the form ##L=\frac{1}{2}m\Vert \dot{\textbf{x}}\|^2+\frac{q}{c} \dot{\textbf{x}} \cdot \textbf{A}-q\phi## I then formed the canonical momentum ##\pi=\frac{\partial L}{\partial \dot{\textbf{x}}}##...

Hi Just a brief intro/bio. Aged 68.5yo but mentally still a (responsible) teenager - that may be an oxymoron.. Interests: Astronomy, Cosmology, Spectroscopy, solar dynamics and anything Physics and maths related. Beyond that, add any other form of science and for more fun, I design, build...

I have developed a website aimed at bright students who are getting towards the end of high school or are in the gap before they go on to university, and who want to stretch themselves a bit and tackle some physics that goes well beyond the school curriculum but is nevertheless accessible with...

A thin uniform rod has mass M=0.510 kg and length L=0.470 m. It has a pivot at one end and is at rest on a compressed spring as shown in (A). The sequence below shows that the rod is released from an angle θ1=59 degrees, and moves through its horizontal position at (B) and up to (C) where it...

I always have had a burning desire to understand what reality is and how it has come about, Have studied philosophy (on my own not academically) for many years and this led my to compare what I gleaned from there to physics, especially the both the theories of Special and General Relativity and...

The internet has a question for the PF members who are also musicians. Is quantum physics easier than playing this guitar piece?

Something has prompted me to peruse this forum like a morning/afternoon/evening newspaper after I've joined and now I can't help but scratch my head about a few things. See, I'm a traveller from the distant realm of technical universities (which are completely different beasts from non-technical...

Hello, fellow users of the Forum. Excuse my English, as I'm writing in a hurry. What I'm going to describe here is mostly another case of a (potential) Physics after Engineering Syndrome. I'm aware that this is an neverending topic on the Forum and have read a lot of posts on this subject...

I am a retired high school and college teacher doing independent study in physics. I am interested in cosmology and information mechanics, a unified theory that derives gravity, quantum mechanics and more from an elegant new conceptual foundation in which the information represented by physical...

Hey guys this seems like a lovely forum and I do love physics I’m an a level student who is resitting a level physics in the uk bu I still have a passion for it :D

I have a passion for sciences, especially Astronomy since young. I was interested very early in sciences, but the course of my life took a different path. Now, almost close to retirement, I plan on diving in mathematics and physics again. After all the time spent far from these areas, I decided...

https://en.wikipedia.org/wiki/Leon_Cooper Leon Cooper Dies at 94; Nobelist Unlocked Secrets of Superconductivity https://www.nytimes.com/2024/10/25/science/leon-cooper-dead.html https://www.nobelprize.org/prizes/physics/1972/summary/ The Nobel Prize in Physics 1972 was awarded jointly to John...

i have no idea

Hello, I am a high school Physics teacher. I have always loved Physics and took every physics class I could in college. Studying and teaching physics are indeed two entirely different processes. I have an associates of engineering, chemistry, and education degree. My father was heartbroken...

Hello to all, I am looking for a little bit of advice/guidance here. I am a third year physics undergraduate. Just beginning to take classical mechanics, and I do feel a bit out of place in the class. I feel like my vector calculus skills are far too underdeveloped/rusty for the course I am...

Can someone explain what is a dipole moment for me? and what it relationship with F and torque?

I would be in my second year of my PhD, but I'm a leave of absence. I'm studying for my comprehensive exams, but I'm too shy to ask for help from my peers/professors, a habit I hope to break when I return next semester (Spring). On my break I've realized what an incredible place academia is...

Hello! This is Athena, I am very excited to register for physics forums! I am currently live in LI, NY. Who is obsessed with physics and mathematics. I hope to gain more knowledge and see the brilliant idea from forums!

doing school in canada at a grade 11 university level physics and need help

Ever since i was a child I loved staring out at the night sky. I sat in the library going between comics and cosmology. Inventiveness was born from the two. Looking back, had my interest been supported i may well have turned out a physicist. Alas, there is always time. In the meanwhile, I’ll...

I am solid state physics student.

I am working on completing my degrees in Physics. Thanks for the platform and I hope to learn from you.

Hi I need all the bonding frequencies for all the elements in the human body, IE: carbon-carbon single bond frequency of 1300 cm - 1. It is very important to have the single, double and triple bonds because I am doing something that will require them all. It would also be helpful if someone...

Grateful if someone could explain why, if Newton's 2nd law says F=ma, I've read warnings and cautions in several physics books that mass times acceleration is not a force. Is it because the equals sign does not mean equals as in 2+2=4, perhaps?

I tried 2 ways to solve it but both yielded different answers. i would like to know which is correct and why the other is wrong. thank you. method 1: consider force of each tyre. 5 x 10 = F = 50N. so 4 tyres = 200N = weight method 2: consider the whole car, total pressure = 4x5 = 20. total...

Hello everyone, I'm a fifth-year student at Iowa State University, double majoring in Mechanical Engineering and Physics, and I will be graduating this year. I realized my passion for physics late into my academic career, which is why I'm in my fifth year—I've been working hard to catch up...

I am a Physics adult learner.

Could someone please explain, in terms of the momentum, a rail car slowing down if an item is dropped vertically downwards on to it. Thanks.

I am self studying physics as a hobby with the very broad goals of eventually learning theoretical analytical mechanics, EM, general relativity, etc. I have no specific deadlines. My two questions are: With regards to learning the required math, if there is no particular rush, is it better to...

Physicist (Dipl.) Graduated from Heidelberg Uni in '96. Working in renewable energies.

As the title says, is this year's physics Nobel Prize Physics? Thanks Bill

https://www.amazon.com/General-Relativity-Robert-M-Wald/dp/0226870332?tag=pfamazon01-20

I'm considering returning for a Physics PhD next year, after a year out in industry. I've submitted five European applications (2 UK and 3 mainland...), and have got good references from my old supervisors. I'm considering a couple of speculative USA applications to two research groups I'm...

Hello everyone, being new here I would like to introduce myself briefly. By nature I am a curious and ingenious person with an open mind. Although my professional background originates from finance, accounting analysis and business management, I have been studying physics. My approches are...

Heres my first attempt at finding the forces at D: https://i.sstatic.net/CRv5Ikrk.png

Giveaway. https://www.amazon.com/Gravitation-Charles-W-Misner/dp/0691177791/?tag=pfamazon01-20

This is my solution below.

Mint condition. Happy to up load a list of the chapters papers. The font is small in places, looks like word processing in places I can image that too.

I'm a Bacc. student in subatomique physic, helping and/or asking for help is the best way to learn, so here I am. Glad to be part of this community !

Hello everyone! I am 16yo student, I take IB Physics HL, Chemistry HL, and Mathematics AA HL. At the moment I need help with my extended essay (4000 words research paper) for physics, but I will definitely stay here after I finish. Nice to meet yall!