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You should be able to look at Maxwell's equations and get a good feeling for what they mean physically, for example by imagining field lines. Think a little bit like Isaac Newton. beyond that good luck figuring out with what a number is. Physics – and most science subjects – can be very complicated. Introductory Physics Homework Help. I made the choice to switch to Computer Science. Good luck, and I hope you find a degree that works for you! 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? Is an electron more than its behaviors? 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. I can understand Calculus II but damn physics just doesn’t like my brain and vice versa. If the electric force is positive, the two objects reppel. In physics, everything just seems so "hand-wavey". What's the basis of that? 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? Ask people in other departments, ask the faculty especially. 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. Don’t let the subject bog you down before you even tackle it. OK, but what is it? 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. “What we don't understand, we explain to each other” was Robert Oppenheimer's 1948 description of theoretical physics as a profession. Why isn't this thing rigorously defined? I feel the same way now I just assume and shrug my shoulders, By no means am I an expert in this field, I'm in my last year of high school, but, I have a solution to your problem. How is affirmative action an "obvious" issue? Can't understand physics Thread starter piisexactly3; Start date Feb 12, 2014; Feb 12, 2014 #1 piisexactly3 . Engineering is still fairly heavy mathematically though just not as intense as Physics. The short answer is: yes, you can still be a good engineer even if you don't "understand physics". Others struggled, and had to work hard, but eventually figured out the material. For the sake of clarity, I will be using å to represent rotational acceleration. So, when you are thinking about the ideas, think from a mathematical standpoint. I found it to be a little bit of a challenge, but my professor was really helpful, and with a little help, I could actually understand the material, and passed the class with an A. There is battle in your head between common ideas and new ideas. Code like that is common in memory pools where you don't want to be constantly allocating and freeing memory. 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] + This equation is really similar to the one of universal gravitation (F=Gm1m2/r2), both define a force. 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. I don't really understand why the cross sections for proton-proton and proton-antiproton scattering show such high values at low momenta. I actually switched from physics to engineering (my degree is in EE) and I want to second this. QFT goes into much more detail than that, but that is the basics it. 10 Jan 2020 Chanda Prescod-Weinstein. I didn't get things quickly, and lacked the self discipline to persevere and study it. Maybe it was bad professors but that's not a good excuse. 3. In physics (and most other courses), everything is built up gradually from the ground up. I was trying to convert the units by dividing them and multpying them to get the right answer but how can you tell if your suppose to divide or multpy units to get the answers? I don't understand where I'm going wrong on this yo-yo problem, and it is infuriating. When explaining all of the "hand-wavey" part. If you go further into physics, you will learn that, basically, all elementary particles each have their own field, and a particle is just an oscillation of this field at a given point in space. If the electric force is negative, the two objects attract. Papers from physics journals (free or otherwise) are encouraged. 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. Vote. What matters is how much you are willing to put in your best effort. Naked Science Forum GOD! My experience was the opposite - undergrad engineering just a much tougher curriculum. But something you should keep in mind is that people underestimate the need for struggle and hard work. By using our Services or clicking I agree, you agree to our use of cookies. Introductory Physics Homework Help. Our university is famous(lost accreditation) for a bad physics department though. Happy to help. Nothing worth doing is going to be easy. inglor_cz 1 hour ago "How is affirmative action an "obvious" issue?" I can understand Calculus II but damn physics just doesn’t like my brain and vice versa. A vector is defined by a magnitude/scalar and a direction (North, East, North-East, etc...). Log In Sign Up. This is something I often hear students say around the midterm. I sometimes scroll through popular to discover new subs. my guess is your looking at its other properties and thinking it's more complicated than being described by a single number. Although this test is quite comprehensive, there are a couple of things you don’t need to fret about. If you can't do physics, then you can't do engineering. Otherwise, it'd be saturated with people already. Please report trolls and intentionally misleading comments. If so, then why am I "envisioning" something somehow doing something? I have to constantly ask stupid questions and I feel like I’m the least popular in my class because of it. Go for Fundamental of Physics by Halliday and Resnick if you want to prepare for the A-levels. If one is really learning things for the long term, then (classical) physics should flow naturally from a solid calculus foundation (which requires a solid algebra/trig foundation, etc). Your question "OK, but what is 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've already seen questions similar to this subject asked around here before, and they sort of help but not that much, so I thought I'd ask here too anyway (even though I don't expect much out of this either): I had to drop my physics class because I just can't really understand the material covered at all, even though my instructor spoke very clearly and was very nice. And the truth is, unless you’re very passionate about it, the returns you get for that work aren’t much. 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. "-Albert Einstein. Quora asked: Who is the smartest human being that's ever lived? The problem is the actual physics. Because the phrase connects research, teaching, and learning, it seemed the right approach for the talk I gave to the AAPT on receiving the 2013 J.D. So, to summarize: Don’t Panic. 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. 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. Starting out in engineering however we just kind of glossed over the deeper theory quickly and I realized now having gone into physics how much more profound it is than I would have imagined. When you have more than one charge, then the electric fields combine and you get a superposition of each of the charges' electric fields. I've seen many 'smart people' crash and burn and many 'dumb people' succeed. Right now I'm learning about kinetic and potential energy along with springs. 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. Don’t get me wrong, I work hard for physics but I just can’t grasp concepts as quickly as I can with math. When the runner is. They explain it in a way that might be easier to grasp than your textbook or lectures. 1 2. At my uni the physics courses I took were way harder than the engineering related physics. Actually, that’s a bit of an understatement. Your dog thinks you got out of the bed in the middle of the night just to kick him in the head." If you are a kid/new to physics or if you are someone who has lost touch with physics and wants to understand it deeper rather than being mathematical/thorough, you should read this book. The only people who, I would say, weren't cut out for physics were ones who didn't care enough to try to learn. The electric field is a 3 dimensional vector field that has a vector at every point in space. The sings + and - were assigned by humans, you don't need to overthink it; it's just a way to tell us the behaviour of the force. I was the kinda guy who would start studying the night before the test even though I had a full week to do it and then somehow expected to do better than the people who were always on their toes, ahead of the class. "It's not that I'm so smart, it's just that I stay with problems longer. L= 7.1 km from the finish line, a bird begins. Nobody knows why there are protons and electrons. Members of the Institute of Physics can enjoy the full issue via the Physics World app. I guess I really am just stupid” is an example of the belief that someone should be completely competent and achieving in all ways in order to be a worthwhile person. 36 0. Posted by just now. Don’t understand PHYSICS QUESTION? We often reject "phenomenological" models as not being appropriately ground in more foundational theories (so there's clearly an explanatory hierarchy), etc. A quick Google Search ought to pull it up no problem. line at vb= 4.4 km/hr (2 times as fast as the. I've failed physics II twice before understanding that I had to get away from it in order to move on and graduate. It is not a sudden revelation, but a journey. A2A I could never understand it either. Ask Question Asked 1 month ago. I’m pretty sure that pen is actually floating tmnt tmnt 1987 teenage mutant ninja turtles cartoon physics funny humor silly cartoon animation gif best-of-tmnt Now, there's the Law of Coulomb (the one that goes F=(kq1q2)/d2). These figures are taken from Nuclear and particle physics by C.Williams. Homework Statement: At what average rate does the magnetic field need to change to induce emf of 1.0 V. See attachment question 1. although I'm sure it must be amazing to go from physics to engineering. If it's not easy at the start, then they lose enthusiasm really quickly. 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. The amount of protons and electrons are the same in every natural element (atoms). 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. I don't understand the algebra in this answer Thread starter pkc111; Start date Jan 13, 2021; Jan 13, 2021 #1 pkc111. Is my brain just not wired correctly for this? Press question mark to learn the rest of the keyboard shortcuts. Movies Preview 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.

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