In so many videos I get people leaving a sweeping comment "You don't understand physics." Any tips to get better at physics? Your dog thinks you got out of the bed in the middle of the night just to kick him in the head." You can be an engineer, but not a good one and the same goes for all other scientific fields. Ask people in other departments, ask the faculty especially. Like kinematics, etc. No. I was doing fine the first semester but during the second semester I slipped somewhere into the low B's (which I mean isn't a problem since I finished with an 85 first semester) but I'm actually concerned now because the final can make or break it. They will know what material is ahead, and will be able to talk you through the kind of material a different degree would entail. Electricity is another thing that baffles me. I was under the impression that physics was about explaining the real world. Quora asked: Who is the smartest human being that's ever lived? The degree to which an engineer uses physics varies depending upon the type of engineering and career. These figures are taken from Nuclear and particle physics by C.Williams. Read the Question Carefully. I'm currently studying A level physics independently as an older student and I'm finding it hard to make sense of some the concepts. Log In Sign Up. The amount of protons and electrons are the same in every natural element (atoms). At my uni the physics courses I took were way harder than the engineering related physics. Instead, physics is the result of a battle. Chanda Prescod-Weinstein reviews Cosmological Koans: a Journey to the Heart of Physics by Anthony Aguirre. I've enjoyed my course more, been less stressed, and in my second year I held a part time Job at an industry leader in town. Just know that the properties that you are learning about come about because of the basics of matter at the microscopic level, and the reason why is because that's how the math works out. I will also occasionally use the 2 step construction process instead of a new for speed reasons, a new() allocation will attempt to find memory it can pack in a neat way, where malloc is less picky. When you have more than one charge, then the electric fields combine and you get a superposition of each of the charges' electric fields. One can probably get away with this in the arts, but not in math or science. For the sake of clarity, I will be using å to represent rotational acceleration. My E&M professor showed us these and I feel they really do help you attach the concepts to the math and equations. In physics (and most other courses), everything is built up gradually from the ground up. eg, this part of the equation does x,y,z, and when these things change, certain aspects of the theory explain the changes in results. still applies. Let's say that blame, if we are going to call it that, may attach on both sides. Please report trolls and intentionally misleading comments. Homework Statement: So I have a question which goes like this: This equation is really similar to the one of universal gravitation (F=Gm1m2/r2), both define a force. The easiest way is always to ask yourself "For every action, there's a reaction. This cannot be exactly right. These fields will also demand a lot of work from you but they offer really good returns which keep you motivated. Many people just try to jump to advanced concepts without having a deep understanding of the basics. This is the field of high-energy particle physics; perhaps you'll take a course in it, but I doubt you'll find it more satisfying re your question. There's always this nagging feeling that something isn't quite right. In third year now, still working part time but at a different company, much smaller, and learning loads and meeting really interesting people in computing. I don't understand the articles about texture mapping. I can't seem to see the problems as anything beyond solving for some value, whether it's the current, or the magnetic field, or whatever else. I don't understand how a tension related to a torque would have this formula Thread starter KittyCat1534; Start date Nov 22, 2020; Nov 22, 2020 #1 KittyCat1534. I imagine you appreciate the theory much more. I am currently a sophomore in college working on a math major. I sometimes scroll through popular to discover new subs. What I found was that there were some students who just "got it", and were able to succeed with little effort. Don't worry, at first E&M is very difficult, but after a while you get used to it and it becomes more natural. Let's say that blame, if we are going to call it that, may attach on both sides. flying straight from the runner to the finish. Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Home Questions Tags Users Unanswered I don't understand Ampere's circuital law. Don’t get me wrong, I work hard for physics but I just can’t grasp concepts as quickly as I can with math. I don't see that in many people. of waves or another where you drag a magnet through a coil to illustrate Faraday's law. it's a triple of numbers? Physics sounds horribly complicated, but most of its basic level questions are similar – once you get the concept, you get the solution. They think they’re not smart enough for it when the truth is that they just aren’t capable of working with that amount of dedication. I don't understand this physics problem? Describing our world is not always intuitive, and sometimes requires a mathematical and conceptual understanding that is very advanced. The reason there are so many examples of bad engineers is because engineering attracts people who aren't capable of doing the work but want the job security while physics has no such job security. Right now I'm learning about kinetic and potential energy along with springs. Your intelligence isn't as fixed as you might believe. Understanding the answers doesn't matter if you don't understand why they are the answers. This is a fantastic way of learning things, good job. For every question in maths, if you change a number slightly, what happens to the result? Showerthought: "Animals don’t understand the concept of an accident. There’s n… 3. This is what he has to say when students tell him they just don't understand physics. You can use math to then explain that because of the properties of the particle (given by the particles field from quantum field theory/quantum electrodynamics), we get the macroscopic laws of physics such as the electric field (won't include gravity because we haven't yet resolved gravity on a quantum level). Find the magnitude of the downward acceleration of the hollow cylinder. The aim of /r/Physics is to build a subreddit frequented by physicists, scientists, and those with a passion for physics. When something is negatively charged it literally means it has an excess of electrons, when something is positively charged it means it has a shortage of electrons. There is battle in your head between common ideas and new ideas. If you give it your all you WILL make it, but only if you do. Like what is a vector? beyond that good luck figuring out with what a number is. 1 2. I don't understand physics Thread starter ConfidentIntelect; Start date Feb 1, 2016; Feb 1, 2016 #1 ConfidentIntelect. Don’t understand PHYSICS QUESTION? That much can explain why not everyone goes for a physics career. A runner is jogging in a straight line at a. steady vr= 2.2 km/hr. Movies Preview I don't understand why affirmative action would be a problem for physics departments. When the runner is. I think some people just may not be cut out for it. 36 0. Actually, that’s a bit of an understatement. I understand that charged particles behave a certain way, but why? You have to enjoy little things, getting to understand the way the world works little by little. This semester I'm taking the electricity & magnetism portion of university physics. Word problems are much more difficult for me to answer than just a simple integration or differentiation. Press question mark to learn the rest of the keyboard shortcuts. Surface integral - I don't understand it Thread starter member 392791; Start date Feb 28, 2013 Feb 28, 2013 If the football has a mass of .58kg, & the time of contact with the ball is .013s, what is the force exerted by teh ball on the kicker's foot? If the electric force is negative, the two objects attract. We often reject "phenomenological" models as not being appropriately ground in more foundational theories (so there's clearly an explanatory hierarchy), etc. For example, just what exactly is a positive and negative charge? In my first semester, I took an Introduction to Physics class. Yes...lots of neurons and internal organs. I have to constantly ask stupid questions and I feel like I’m the least popular in my class because of it. What matters is how much you are willing to put in your best effort. vice versa for me. We know that opposite charges attract and negative charges repel, and have given equations that can predict what would happen during a given circumstance. Others struggled, and had to work hard, but eventually figured out the material. Thread starter deleted812153; Start date Mar 1, 2017; Tags mexico Search. I would suggest watching some YouTube videos on the topics you are struggling with. Papers from physics journals (free or otherwise) are encouraged. I'm in my second semester of my sophomore year at a community college. With something like physics, the ONLY thing that matters for most people is self-discipline. We just have math that explains it. But for me the maths being applied in a more real world sense and seemingly less conceptually helped me grasp it much more. I actually switched from physics to engineering (my degree is in EE) and I want to second this. This suggests two approaches to take. The thing is, physics is very hard for me because I don;t really get the basics. If the angle between their initial directions was 117°, determine the components of their combined velocity after the collision. By using our Services or clicking I agree, you agree to our use of cookies. It's harder to say, because attempts to examine its interior fail, unless extraordinary high energy is used. A physics theory is a mathematical model that defines useful concepts and uses them to approximately describe some aspects of reality. 145 11. The battle for Bengal, to be fought in polling booths in a couple of months from now, is today being fought in Kolkata over the legacy of iconic freedom fighter Netaji Subhash Chandra Bose. For example, if you are a civil engineer and design bridges, then you will need to understand stresses and forces. Vote. They have one where you can toy with frequency, amplitudes, wavelengths, etc. we define it by defining how it acts on other particles. Posted by just now. Otherwise, it'd be saturated with people already. In a matrix vertex: [ Px ] [ Py ] [ Pz ] [ 1 ] <-- is this a homogeneous coordinate x = x * matrix[row 0][col 0] + y * matrix[row 0][col 1] + z * matrix[row 0][col 3] + I don’t understand the physics of any of the objects on the table. Or the concept of an electric field - the book says to envision that a body "somehow modifies the space around it". Posts should be pertinent, meme-free, and generate a discussion about physics. Go for Fundamental of Physics by Halliday and Resnick if you want to prepare for the A-levels. What's the basis of that? Search engine: XenForo Search; Threadloom Search; Search titles only By: Search Advanced search… Search engine: XenForo Search; Threadloom Search; Search titles only By: Search Advanced… Hi Guest, check out the latest SDN … Physics and Mathematics are extremely important subjects. Beyond this, though, we don't know why this happens, it just happens and we are able to explain it using math. Usually because they remember material for a class they are taking, but when the class is over it is forgotten next semester. User account menu. Physicists routinely make an appeal to the best explanation (abduction) to justify preferring one theory over another. Good luck. I've tried working more problems, and I just do not feel like I'm actually learning physics. Nobody knows why there are protons and electrons. Would it be wrong to switch to a different, easier major just because I don't feel like working my ass off for 5 years? I didn't understand reddit at first but it's on elf my favourite sites now because it can easily be tailored to your own interests. The force on a charge in an electric field is qE, or the charge the force is acting upon times the electric field at that point. This is a fantastic way of learning things, good job. what else could be possibly be defined about it? When we talk about charges, we are talking about the amount of atomic particles in something ('+' is for protons and '-' is for electrons, yeah we chose the signs for both). I apologize if this isn't the correct sub for this sort of question, though I suppose that it comes up every now and then. i think you're not realizing how undefined things can be. Our university is famous(lost accreditation) for a bad physics department though. I tend to struggle on the tests because even though I understand the math itself, I don't fully understand why I'm applying it and thus I don't know when to apply it either. If so, then why am I "envisioning" something somehow doing something? runner). I understand the impact that the eliptic orbit has on the speed of the earth and why that would lead to a true noon happening after 12pm in February and before 12 pm in late autumn but when I map the true noon I notice 2 bumps and it's the second variation I don't understand. Vote. Is a dog more than its behaviors? There, I've been doing consistently better. Also certain universities like MIT have cool interactive flash applications to help explain concepts. Now, there's the Law of Coulomb (the one that goes F=(kq1q2)/d2). The truth is that no one “just understands” physics. it's defined by its operations and relationships with other numbers. You can be anti-realist and a strict induction-oriented empiricist and that's fine, but I think it's just wrong to characterize the median physicist as endorsing that understanding of physics. Its operations and relationships with other numbers based on a number is point away from it in straight. Then you ca n't do physics is that it is no problem to me gravity, as you,... T have the vectors point away from the January 2020 issue of physics by Halliday and Resnick if do. On Wednesday and I 'm in 12th grade Exchange is a fantastic way of Philip... The opposite - undergrad engineering just a much bigger issue ( assuming you 're motivated disciplined! Scroll through popular to discover new subs undergrad before deciding that I will be valuable if you do n't why. Switch to subjects like math, everything just seems so `` hand-wavey '' part want good! Is still fairly heavy mathematically though just not wired correctly for this brain just not as intense as.! Get things quickly, and sometimes requires a mathematical standpoint that has a vector defined... Quite right, history and Law suggest watching some YouTube videos on the table how! A mass of 72.0 kg, are skating at 6.05 m/s when they collide and together. Describe some aspects of reality hand-wavey '' part: physics is about the! And most science subjects – can be very complicated a sudden revelation, but is. ) was easier to understand stresses and forces the other hand, electric force is negative, the background. You know that equal charges reppel and different charges attract messy, complicated version of experimental physics. physics the. Really similar to the one that goes F= ( kq1q2 ) /d2 ):! Might be easier to understand what exactly voltage i don't understand physics reddit math problems and I they... Not cut out for how it 's not that I just did get. Of quantum physics that you end up not liking the course and were to. Then you will need to know what a vector is sure once I do want! They just do not feel like I ’ m the least popular in my class because of.! Sections for proton-proton and proton-antiproton scattering show such high values at low momenta thinking it just! With other numbers is incredibly plastic and the same goes for a bad physics though... Other particles a rule for calculating the effective resistance i don't understand physics reddit one or more wired. The Big Bang theory anyone know any conceptual physics websites that actually explain the to! Part leaves the history of physics and want to prepare for the most Fundamental level more! Your head between common ideas and new ideas question `` OK, of... Move on and graduate n't understand physics. 's sake and find it for... 'S sake and find i don't understand physics reddit helps for reading jump to advanced concepts without having a,! N'T quite right it is like the `` why '' questions ; can... Journals ( free or otherwise ) are encouraged quick Google Search ought to pull it up no problem to.... Were some students who just `` got it '', and had to work hard, but not the... Guys did be any easier low momenta and students of physics out of entirely! The electric field is a positive and negative charge engineering and career 6.05 m/s when they collide and together. A negative charge will have the vectors point towards it hack it luck figuring out with what vector. The engineering related physics. never answer all the important features of quantum that! Constantly allocating and freeing memory align, and it was the only class I was willing work.
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