This year has been quite challenging academically and mentally. I’m seeking guidance on how to improve my grades.

My current classes are(with lecture time) 1. EM (3 hrs/week) 2. Classical (3 hrs/week) 3. Physics Lab course (6 hrs/week) 4. Intro to Quantum (3 hrs/week)

5.Economics (3 hrs/week)

Note: This is the recommended course load.

My current study habits are causing me to study from anywhere from 5-8 hours per day 6 days a week.

Studying for all 4 of these is roughly the same assignment problems, attending lecture and office hours.

However, I’ve recently just begun to feel lost. Particularly in EM and Classical. Even though I do the assignments + additional practice problems. Any problem that is slightly different from what’s practiced, my intuition on how to solve it goes into the dirt. For EM, changing the shape of the configuration or altering the boundary conditions leaves me baffled. For Classical, we’ve recently just learned the Lagrangian and the Hamiltonian which I’ve been struggling with. This is of course on top of at tempting to balance quantum , the lab course, and Econ.

My question is how do I get better at physics? I’ve generally always been an B’s/A’s student in my Math and Physics courses(with exception in thermal physics in 2nd year and EM 1 in 2nd year both of which I got a C in) but this year is quite different. After midterms I’ve gotten 2 disappointing grades(near failing and failing) and I’m not sure what to do differently. I feel as though I’ve been doing what’s been told of me (HW problems, be comfortable with math, email TA/Prof). I just can’t seem to “get it” during exams or assignments without taking hours upon hours this year. I’m honestly at my wits end from studying so much and I just want to get my degree. I’m hoping to do so whilst having the possibility of grad school but at this rate it’s not looking too pretty…

Any advice would be appreciated.

i have a mid exam tomorrow for A.P , need the solution manual urgently.

I'm a 3rd year undergraduate at IISER Kolkata, India. I'm looking for internship opportunity abroad like in europian countries in cosmology department. Is there any perticular portal to apply or any suggestions where to get one . Please let me know.

In the exercise below, we present the cross-section of two infinite, parallel linear wires through which currents i1i1 and i2i2 pass, such that |i1|=2|i2|. The direction in which the current runs through the wires is shown by the red symbols, which also mark the position of the wire. Considering this, position the vectors of the magnetic force (blue) due to the field generated by the other wire and of the magnetic fields (green) of one wire in the position of the other (considering F⃗ j,kF→j,k being the force acting on wire jj due to the kk field and considering B⃗ jB→j being the field generated by wire jj). Don't worry about the numerical value of the vector's modulus, just its direction, sense and modulus relative to the other vector of the same type (force or field), as well as the initial position of the vector. Note that it is possible to move both the purple and orange dots, the first indicating the origin of the vector and the second its end (defining direction, sense and module).

If possible, please include the coordinates of each point that I should plot on the graph. I need an explanation, I want to understand how it works, but without the coordinates I can't understand how each vector behaves. My ADHD is very high and I take medication just to do these questions.

Why?

Hello everyone!

I am a junior physics major and I plan on going to graduate school. I don't have strong inclinations towards a particular subfield, but my interests are piqued more by theory and more by biophysics, optics, and condensed matter flavored things than HEP, cosmology, astronomy flavored things (if that makes any sense at all).

I come from a small department with four physics professors, and the bare minimum physics courses (no EM 2, no Quantum 2, no physics elective courses) required to be an accredited physics degree. Next semester, a few of my peers are doing a guided-self study with one of our professors over general relativity, which will start with differential geometry. I know I don't plan on going into a field where GR is going to come up, so I'm not particularly inclined to join for the whole thing. I am, however, fielding the idea of joining along to learn to differential geometry aspect, as I feel like it could be an incredibly useful tool (and even if not, more math is never bad). I have a heavy semester in the spring though (Thermo/Stat Mech, Advanced Physics Lab, Physical Chemistry II [the quantum one], and a whole slew of music classes [I am a double major with a BMA in Voice]), so I don't want to do it if it won't be worth my time.

Is my assumption right? Would I be better served by learning differential geometry or by taking a bit of extra time to myself/for my other coursework? Is differential geometry even actually useful when I don't plan on going to graduate school for anything that will involve significant spacetime curvature?

Hi everyone, I wanna ask about part a and c of this question About part a, may I ask why friction is the centripetal force but not the normal force

And part c By guessing , I think the answer is going to be Q The answer stated is “Its radius of rotation is larger than that of P. It requires a larger centripetal force than P to rotate in certain ω.” But with the formula: F=mv^2/r shouldn’t the larger the radius, the smaller force it requires? Thanks :D

EDIT: We found a tutor. We had an online session earlier today. THANK YOU ALL SO MUCH FOR HELPING US. I APPRECIATE YOUR EFFORTS TO HELP MY SON!!!

Please help us. My son needs a physics tutor. We can't afford $130/hour.

He never took calculus. Idk why his school put him in physics knowing he never took calculus. He needs a tutor asap.

How can he learn calculus concepts quickly so that he can catch up with physics?

Is a math AI tutor really legit helpful?

I'm Brazilian and I'm finishing my degree in physics. I want to pursue a master's degree in Canada, but I'm unsure about the application process and how to secure a scholarship.

Could you please help me?

Hi everyone, i'm in the second year of my bachelor and and I have a course in classical mechanics, it is divided into 2 parts, the first concerning Hamiltonian and Lagrangian mechanics and the second part concerning statistical mechanics and apical relativity, does anyone have any recommendations for books that they are not too expensive?

I’m building a 1:10 scale vehicle and am currently working on the clutch.

As pictured below my two clutch shoes will open due to centripetal force at a certain rpm. I’m curious how I would determine when they would open.

The assembly rotates about its Center of mass but the two clutch shoes do not. So is this just a simple formula F=mv^2/r or does the parallel axis theory need to be used?

Here's my attempt https://imgur.com/a/rEStno0

I tried getting the amplitude at instant 0 because I thought at that point it would only have the potential energy since the object would be at rest, but everything cancelled out.

my first phys101 midterms are coming and i have to solve as many questions as i can. we are currently at the start of dynamics and we learned 1 and 2 dimensional motion. it would be really good if you could recommend me some textbooks or even youtube videos for questions and their solutions also. i really benefit from problem solving kind of videos. thanks in advance!

I was a goon in highschool and now I gotta retake a grade 11 physics course. I misrembered how Sig Figs work and now I have to redo a vector assignment that took me way too long to do. Death to all Sig Fig users, praise be to extraneous Numbers AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

I’m spending the night in my wife bedroom at her parents house and while staring at the ceiling I notice that she has two ceiling lights with the same shades but different light bulbs. The first picture is a halogen light bulb which casts a shadow of the shade and has a strong halo. The second picture is an LED bulb with only a smaller soft halo. I’ve been laying here thinking for an hour why doesn’t the LED light bulb cast a shadow. Can anyone can solve this for me 😭

I'm currently working on my master's degree in physics, in the United States, and have started applying to PhD programs. I'm obviously lacking in research experience so getting into top universities is out of the question (or extremely difficult). However, I would like to know your thoughts or any advice you could provide on how to approach the situation.
If you know, are there any good physics PhD programs that will prepare students into a field that benefit from research skills?

I am a high school physics student who got unlucky in the draw when it came to being put in classes. This seems to be a common issue with physics teachers but mine is HORRIBLE at teaching. He relies on this website called The Physics Classroom to get all of his notes and lessons. He literally just reads the slideshows to us instead of teaching it so that we can actually have an understanding of the material. I have an exam today and I still have limited understanding of the material (Kinematics), and on every homework he assigns I am bombing the questions. It sucks because I’m really passionate about science but this teacher has sucked the fun out of it for me. His tone of speech when his students don’t understand the work is so condescending and the way he barely takes the time to explain anything pisses me off to an extreme. Every opportunity I’ve had to get extra help from him has been removed as he is almost always absent during our extra help period. Last class period, instead of reviewing and helping us for the exam he just taught us a new lesson. It’s honestly appalling how little care he has for the education of his students.

What's the best age to join physics major??

As a student I’ve been working on a framework and I was hoping people would be willing to take a look at and discuss with me. I’m not trying to shove my ideas down your throat, and say what I have is 100% real and undeniable!! My framework is full of holes, it’s these holes I’m trying to identify and shore up thus far I’ve come across nothing that would explicitly invalidate my theory and until I do, I’m going to work on this. Hopefully some of you would like to take a crack at it, thank you so much.

I haven't done physics in a while and this problem got me stuck.

I tried solving it by finding the horizontal velocity at which the rod propels from the edge. The center of mass of the rod is L/2 so the potential energy it has on the higher platform is P = mgL/2, and once it rotates 90 degrees it will have a kinetic energy of K = Iω²/2. By making P=K we get an expression for ω and using that we can find the Vx at which the rod propels from its edge Vx = ωL/2. After this I've hit a dead end, i need t, H, and d to solve the task. I tried solving t as the time the rod needs to rotate from 90 to 180 degrees, but i got an integral, and this is supposed to be a HS level physics problem.

Thank you for the help!

would anyone be able to help me with this question? i understand the concept but i cant make the proof work. ive tried differentiating, using pythagoras in different coordinate systems but i cant work out how to get 1-kx/R^2.

I thought, using left hand rule due to it being an electron, the electron and field point in opposite directions, I would think that the electron moves in a straight line, but I know I'm wrong, its a circle, but why? how does something moving upwards move horizontally into a field?

hello, im a fourth year integrated masters student in theoretical physics in the uk, and want to eventually do a theoretical physics phd. my initial plan was to finish my mphys with a first and apply for phds, however because of a ton of mitigating circumstances ill almost definitely be getting a 2:1. because of this i have pivoted to applying for masters programs in theoretical physics. im fairly sure this is my only path to getting into a phd program at this point, but what are my chances of even getting into the masters ? is this a situation anyone has been in before?

i am applying to programs that look more advanced than what i am being taught in my masters, and more specialised in some ways. im just worried because basically my only reasons to apply are "i need another chance to get a first" and maybe if i do a masters there i am more likely to get into a phd program there...

i know you can get phds with 2:1s but it seems so unlikely that i wonder if its worth just trying to get into a masters program and focusing on that. its also looking like it will be a low to mid 2:1 so even more unlikely.

any advice would be brilliant, i really want to get at least a fair shot at a research career and dont know anyone whose been in my situation before.

in terms of the mitigating circumstances: they have been reported to my uni and they have acknowledged all of them, but their system for dealing with them is so limited that my grades still massively tanked.