Physics Definition and 987 Threads

Hello everyone. I am from Kolkata, India. This year I have cleared IIT-JEE and taken admission to the Indian Institute of Petroleum and Energy, Visakhapatnam Chemical Engineering which is under the mentorship of the Indian Institute of Technology, Kharagpur. Even though I had to pursue...

Nearly two decades after I graduated with an engineering degree, I'm currently studying for a master's with a particular emphasis on conceptual/theoretical statistical physics. Based on my interests and stylistic preferences, I'm using the following books to build my understanding of physical...

Homework Statement:: This is from 5 ed, Physics 1Halliday, Resnick, and Krane. page 428 about sound waves I have highlighted the equation that I don't understand. How did the author get it? I understand how they get from the middle side to the RHS of the equation, but I don't understand how...

Hello! I would love to know if any of you have some nice physics poetry. I often think in terms of graphs, and a lot of my metaphors relate to superposition and the uncertainty principle, but I always have a difficult time expressing that in poems. I was wondering if anyone had discovered how to...

What are the majority of days like? Is it always the same everyday or is everyday something brand new? Is there any aspect of this career that you didn’t expect to like that you did? Is there any aspect you didn’t expect to dislike that you did? If you could change one aspect about your job...

Why the wheel moves? I intuitively think that it should move to right but I don't really understand why. When AB gets longer by x each end gets longer by x/2 so W goes to right and down. This will create torque and body will move. This explanation seems valid but I can't calculate anything and...

(EDIT: I have also added 2 snippets of the syllabus of the entire Math Physics course in my curriculum as reference). I am currently in the 3rd Semester of my 3 year UG Physics degree from where the subject of Math Physics has been separately included. I need extensive guidance from someone...

a) V=(4/3)pi(r^3) N=M/m_n (M=mass of neutron star, m_n=mass of neutron) Subbed into E_f = (hbar^2 / 2m) (3(pi^2)N / V)^(2/3). T_F = E_F / k_B b) dU = (dU/dS)_s dS + (dU/dV)_s dV p = -(dU/dV)_s dV V=(4/3)pi(r^3) -> r = cubedroot(3V/4pi) subbed into U_g = -(3/5)(G M^2 / r) take (dU/dV) plug into...

I am totally confused about the task. Any help will be nice. Thank you so much

Hello, dear all. Currently I'm studying MSc in physics hoping to do PhD soon after my graduation. I did my bachelor in Quantum Electrodynamics, and before starting my MSc in physics, I was working as a research assistant in experimental HEP lab, and I thought I wanted to explore other subfields...

When your son puts "The Feynman Lectures in Physics" on his gift list.

for the first question, i thougth that 0,5 A is the answer? for the second question: i used the E =hc/λ to found the E. but i got a little confused which equations to find ∆E, since there's no ∆t. or should i search the momentum, then use the λ= h/p ?

Hi there, I know this question has been asked a million times but I need some help. Essentially, I am studying for F=MA/UsaPhO with the goal to make camp or IPhO(?) this year. I have begun studying with University Physics with Modern Physics, and yesterday read the first chapter of the E&M...

¿Cómo es la calidad de la acción y la variación de la energía y el movimiento, durante el desplazamiento, cuando se usa un columpio y un tobogán de agua? [Translated by a Mentor using Google Translate]

Apparently there are problems with him snapping his fingers while wearing a glove https://www.sciencenews.org/article/finger-snap-physics-new-high-speed-video-thanos

Summary:: Changing the speed of light, etc. First: thank you everyone. You have all been a great help. I am a retired engineer trying to fill the gaps in an inferior education. Thank your for your ongoing guidance with all the questions I have asked over the years. Now I will ask an absurd...

What are some of the hardest concepts to learn in AP E&M? I am going to prepare for the exam with my previous physics teacher. I am currently a senior enrolled in AP Calc BC, and I already took AP Mechanics.

I have a 3.29 in the major, research experience in my last year and should be published in the spring. Good recommendations… I’m so stressed…. Kicking myself is an understatement. I just want to get into a respected school, doesn’t have to be a top tier school obviously… just something respected...

Summary:: 3.0 gpa(which may be considerably bad :((((), 3 research experience(1 summer term,1 fall,1 spring term) and 1 project in undergraduate Hello everyone these are those what I had in undergraduate physics.I am going to apply to top tier schools in France,Taiwan and China.Do you think...

I am studying mathematics bachelor and next semester I have to choose some modules. I am really interested in physics, especially particle physics and quantum mechanics. So I am taking partial differential equations and Stochastic processes or Geometry and topology. There are also numercal...

Would like help as to the method rather than the answer please. Classes haven't been very clear therefore everything is self taught. Many thanks. ' The Drag polar for an aircraft is given by: CD = 0.025 + 0.08 C^2L What is the maximum Lift to Drag ratio '

Hello I’m hoping someone could help I was asked by a fellow student the following question A 6 foot tall boy is stood in his schools gymnasium, he throws a standard full-size tennis ball 🎾 up in the air to the height of 20 feet and it lands back into his hand at the same distance from the...

Manfred Steiner always wanted a Ph.D. in physics. He finally earned it at 89 https://www.npr.org/2021/11/07/1052005447/brown-university-89-phd-physics-dream?

I am having trouble with part b). I found the answer to part a) is -0.4 and for part b) the mark scheme says that the velocity of the 2nd bag is 1.6m/s but how do I find that out? If someone could perhaps show step-by-step of part b)? Thank you!

Hi y'all, I'm a 3rd year undergraduate, finishing up a BS in physics and a BA in political science. I've been working at a computational physics lab since freshman year, my GPA is pretty good (3.73 right now), and I'm pretty involved in campus leadership. I love physics and the lab I'm working...

I am looking for a book that teaches the basics of physics that is easy to understand and good for self teaching. Any good suggestions?

Title says it all. I am interested in studying the physics complex systems and nonlinear physics, however i find it very hard to find a good program as it seems this area of study is not the most mainstream of them. I found out about Max Planck but still want to know if there are other strong...

I'm going to apply for university and as any other student interested in physics, I'm stuck with the centuries old question, physics or engineering. I'm quite sure I will be going for grad school afterwards as I really liked doing research and stuff. I am yet to confirm on which field I'm most...

I got this as homework and I am not sure how to attempt it

Hi, I have the following problem, maybe someone relates. I am about to finish my Bachelors Degree in Physics and must say it was a very unenjoyable road. I started it because since forever I was fascinated by the "great" ideas trying to explain reality that lie behind physics, i. e. Quantum...

Hello. Firstly, I've calculated the density of Kr ( = 3.74 g/dm3), and I know that the p (fluid) = ρ * h * g. And then I've used the following equation: p1*V1 = p2*V2, and therefore: p1*V1 = ρ * h * g * (m/ρ) => p1*V1 = h * g * m. (h = 3.0153 m) Is that correct? Please, how could I calculate...

I had a few questions about this paper by Nima Arkani-Hamed, Georgi Dvali and Savas Dimopoulos (https://arxiv.org/abs/hep-th/9907209) which is closely related to the concept of branes (https://en.wikipedia.org/wiki/Brane) 1. The authors of the paper mention that the branes in the model could...

If Tl;dr I am struggling in Math 171 and Physics 191 and throwing around the idea of declaring a geology major with an astronomy minor because the Physics major "juice is not worth the squeeze" at my age(29) anyone else out there who struggled with Calculus 1 when they first took it?Hello...

I am a new tutor working with students in 11th grade physics in New York City. I am required to keep notes internally on the sessions and the standards that I cover in them; after noticing that the physical science standards don’t include mentions of velocity or displacement as a content area, I...

For example, Terrence Tao has an endowed research position where he is able (paid to) through grants and school salary to do whatever research he wants. Tao does research in pure and applied math. This is rare of course, but I haven’t been able to find any information on this in physics...

I think that once I put a=0 and use v=u+at it works as I get 0=0.01t^2 - t. But why/how does a=0. I just can't get my head round it.

Summary:: What does physics study? Other than matter/antimatter and energy what does physics study? And in what ways are matter and energy similar? Are there additional substances that physics measures?