My teacher never does this. For example a typical task could be "show that x = something". Then you can still solve the next part even if you skipped the first part.
TheEnde124 my professor gave a quesion like this on our final were we had to show lambda=2 and then use 2 in part b to show something else. But if you didnt know how to do part a, my professor gave no credit lol. So you are lucky
Omg, I just took 3 maps tests to get into a school, and this one kid was done with all three just as everyone else finished the 1 😂 I didn't know whether he kinda just said Fuck it or if he is super smart. Either way, I got scarred. Lol P.S. does anyone know if a 255 on a maps nwea math test is good? Cause thats what I got and I have no clue what's a good score lol
The only way to receive true happiness is to be born again.Jesus loves you and is coming back to earth soon.This year is giving signs of end times.You need to repent.Please believe and spread the word
@@Quotenbrtchen I still remember the words of my prof whenever i asked something and the reply was "cant tell you". At some point you just dont try anymore :( .
@@antaresmaelstrom5365 Dont remind me >_< I sometimes didnt even do that just so i wont feel down for the whole day, the worst time is right before the exam begins, than the exam itself and than the time right after the exam. Hated all of these.
Happened to me on a test cause I had been sick for 2 weeks ,ended Up learning everything att home,helping some classmates and then te doing the test and getting 90% ? Bruh idk how that happened
@@ArtinTheBeast I was talking about the total change in entropy for a universal system, not just a local change. Had a question on an exam where I accidentally switched signs and the comment from the professor said it cannot be non-positive for the total change of a universal system. The second law does state that the universal change in entropy is always positive, right? Unless I don't know thermo/stat mech as well as I thought.
TheIttSco ah, I see. Yes, the second law of thermodynamics does say that energy always travels towards increasing entropy (hence positive). Local entropy changes can certainly be negative though
I actually had a class where about 80% of people never made it to the last question. The prof (or more likely the assistants) tested the time required again and everyone realized that it was too short, so they ended up giving some leeway with required percentages.
I'm sure it depends on the professor, but usually if I don't have time to solve the problem I'll jot down a quick outline of how I was planning to solve the problem. Sometimes they're charitable and throw me a couple points for approaching it correctly lol
@@Dezmont01 I see you guys didn't understand the " " was because it's also something professors say in those situations, not saying Brutal exams are easy if you study (btw just got murdered yesterday on a digital signals midterm)
Literally had a professor one year (not physics, but discrete math) try to claim that her exams were fair because she took her own exams and was able to complete them within the allotted time she was giving us. Like...
Always briefly look at the questions at the beginning to find the ones you can actually do (and see if there is a formula sheet). Also you missed the part where half the class walks out with expressions that can only be described as a combination of depression, anger, disbelief and exhaustion after the test.
Is physics really that hard tho? I'm a HS senior and would like to study physics...but am deterred by its difficulty. Do people ever get As/Bs on exams or is it impossible/rarely seen?
@@l.1244 honestly if you ask that question about grades youre on the wrong track anyway. The only thing that can guarantee good grades is unwavering interest. Period. It's pure effort in any case.
@@l.1244 It's hard, but getting high marks is not impossible, most of my final marks are somewhere around 80/100 and I could probably put more effort in. As you move into higher years however (and even in first year sometimes), you will be required to sit there and think for long periods of time to understand certain concepts. Homework will begin to take hours to complete as well. All I'm saying is that it just takes longer to do things. Generally though, when it finally clicks it feels amazing, so if you like physics, I would say go for it. One note on mathematics. I'm not particularly sure how high school physics is taught in countries outside of Australia, but at least here there was very little mathematics involved in high school, at most we used formulas. In university that changes completely. You will use a lot of integration, and eventually move into several dimensions and variables. That is not to say that the maths is particularly hard, most of it is pretty simple and you will learn it during your courses, but don't expect it to just be subbing in to formulas.
Let a=b So, a=b -----(1) Multiply a both sides a² = ab Subtract b² both sides a²-b² = ab - b² Because a²-b² = (a+b)(a-b) (a-b)(a+b) = ab - b² Taking b common on RHS (a-b)(a+b) = b(a-b) Divide both sides by (a-b) a+b = b From (1) b+b = b 2b = b Divide both sides by b 2 = 1 1 = 2 Adding 1 both sides 1+1 = 2+1 1+1 = 3 Hence proved Now give me my 10 million marks😂
@@jojogojo9318 until and unless you realize dividing by (a-b) is not valid,since, a=b and a-b basically equals 0 .... :) Now give me my 10 million marks as scholarship which I can later use for every frickin' test in my life... xD
Use your knowledge in Newtonian mechanics to answer the following questions: 1. What was before big bang? 2. What's dark matter and how is it related to the meaning of life?
@@baab4229 First, I know you're joking ok? I just want to answer something anyway, lol. 1- How much time before the Big Bang? I mean you could literally say 'singularity" and that wouldn't be wrong because that's what existed before the actual expansion, right? 2- listen fam, Dark matter is something we can't see but we know It's there because of how It interacts with the formation and rotation speed of most galaxies. Also, It doesn't have anything to do with the meaning of life, unless you set something related to Dark matter as the ultimate goal in your life, since the meaning of our lives is whatever we want It to be. Not a physics major, so sry for any dumb shit I might have written.
Milton Marques for part 1, you’re right that there is a singularity. But there is no time time before the Big Bang. Therefore, nothing can happen ‘before’ the first moment in the universe
@@bobross5716 But how do you know the Big Bang was the first moment of the universe? Isn't it a model of how the universe became what It is today rather then an origin explanation?
@@Haki145 It is a model that is about as close as you can get to an origin. When everything was a part of the singularity, everything was at one singular position at the origin (sort of x=0, if you want to think about it that way). Since according general relativity, space and time are one and the same, this means time was also at its origin. If "space is equal to zero" here, what that really means is space-time is equal to zero (although GR breaks down at the very first moments of the universe, so who knows maybe it is wrong). If that's the first moment in space-time, there cannot be a moment before it. That's how I understand it anyway. Whether or not there was really something before that (multiverse, big-bang big-crunch cycle, etc...) is outside my realm of knowledge.
Me: “how can I do part a without the information given in part c” Prof: “who told you you have to do it without the information in part c?” Me: “if it’s in part c I’m not supposed to know it in part a” Prof: “who told you that you need to do them in order? If you would look at the whole problem you’d see it makes sense to start with part b than do c,d and only than a” Me: “...”
Back when all exams were paper you could often score highly in multiple choice questions on subjects you didn't know by exploiting info in other questions. At school I attempted an economics exam without doing the course. At work when I was a SQL newbie I increased my mark in an exam above what I thought was accurate by this method.
Prof: "Exam is like your homework problems, piece of cake" You:"Those take me like 5 hours to get done" Prof:"Try being better next time?!" Man profesor I never thought of it that way, when you put it like that it sounds easy.
In my second year undergraduate physics degree in the E-M course everyone was getting like 30% scores on the assignments and were taking like 4-6 hours each week (we had maybe like 8 or 10 concurrent courses) and the lecturer took time out of one of his lectures to explain that the problems took him 40 minutes to do so we should easily get them done in an hour.
It is perfectly possible to get both positive and negative values for time (I'm talking about high school physics lol) when the quadratic formula is used. Of course, the negative value isn't included in the answer. (Correct me if I'm wrong haha)
@@shahedhossainimran yeah sometimes if you forget to ignore vectors and stuff you can still get the right number, u just gotta take off the neg sign lol
Actually I had a modern physics exam where I was freaking out because I got a positive value for time and I knew it should’ve been negative (there was time dilation involved)
Literally doing 2 out of 3 problems for a thermodynamic test and feeling fantastic walking out of class. I ended up realizing I screwed up part of the entropy solution in a dream and lost 2 points. 64%, best test score for that class.
In Engineering we always used to say: *Getting 51% is 1% wasted effort.(*)* And we truly, genuinely meant it when we said it. Our exams were usually _brutally_ hard. (* Getting 50% means you passed the subject and so you wouldn't have to repeat it next year.)
@@dawnriddler yeah but when you‘re not studying something like business you just can’t. When you get a 50 you‘re most likely one of the best 15% among the students in physics
I love the way we had to derive formulas that we'd never seen before. When we'd ask the professor what was expected, the answer was invariably, "It should have been obvious."
I remember in my first year physics paper we had a series of questions asking for calculations when there aren’t a single number given to us. Still haunts me this day
0:28 Me in my yesterday's exam. He literally wrote on the first page. "If you have any questions, please ask!" Out of the hundred question I had, I only had the courage to ask one. Why do I have to be like this?? Fels bad man
@@rewrose2838 some teachers don't make us confident to ask, more like an annoyance they have to go through in other to pour more knowledge to the ones paying attention I am quite addicted to my cellphone, I have 2min breaks every 15-30min In this time I might have a question I won't ask because of fear of "instead of looking at cellphone should be paying attention" And in the end, the place I learn the most is alone with books And for some reason they like to not use the ones they recommend for exercise Fuck that "need to think" in tests I have limited time, lots of questions, I need to literally copy paste answers to make it all on time
@@0Arcoverde Yeah most teachers never wanted to be in that position, they've no intention of being a good teacher (it's just their job , going through the motions of acting like a teacher)
I just had a thermo exam. It was a 24-hr take-home exam (We were already gonna get a take-home before COVID-19 happened). Our professor warned us at the beginning of the semester that, on his take-home exams, he reserves the right to ask *anything* within the scope of the course that we've covered. So I get the exam yesterday. There's 5 problems. Surprisingly, the majority of them weren't so bad - heat engines, Helmholtz/Gibbs free energies, Maxwell distributions, Boltzman factors and partition functions. Nothing terrible. There was *one* problem though on the van der Waals equation with three parts, and oh my god it was a mistake to leave that one for last. The part in your video with "I can't do part (a), so let me move on to part (b)...Oh, use your answer in part (a)..." described my experience with that problem to a T. Couldn't do part (a), moved on to part (b) which needed the answer from part (a). Put down what I would do if I had the answer. Moved on to part (c), required the answer from part (b). And it just abstracted further and further from any meaningful answer from there.
0:41 cann confirm. I'm taking physics major, attending my first mathematical physics class, and yep. 4 problems, solve 1 of them. Satisfied enough and proceed crying the next whole day.
@@lily-tu7om don't be Anxiety mixed with depression and lack of will of live just make it all worst Try to think of stuff to do while you don't graduate Goes to psychiatrist or other professional in the field and seek help You might think you don't need, everybody does, mainly the riskiest and most studied group we know of University students
@@0Arcoverde thanks for the advice! I will be looking for psychological help, I'm also going to start some courses during the summer because people say it's Really hard when you first get in
false. when my friends/professors ask how the exam was, I start tearing up and give them the “does this look like a face of a person who did well?” look
We know all know that feeling of having spent 20 minutes on one of your questions only to conclude it has to be wrong… and then move on to the next one
I once had a very long math problem where I was supposed to prove something, and I noticed one mistake at the beginning of that proof when there was like 10 minutes left of that exam. I had to hurry and make a ton of corrections throughout the entire proof, and I just barely made it, and passed that exam largely thanks to that.
me EVERY time, despite the fact we're typically allowed a formula sheet! i always forget a formula that I have spent some portion of the test rederiving lol
integrate "a = a" with respect to time, twice v = at + u s = 1/2 at^2 + ut (+ s0) then t = (v-u)/a => s = 1/2 (v^2 - 2vu + u^2)/a + uv - u^2 => 2as = v^2 + u^2 - 2u^2 + 2uv - 2uv v^2 + u^2 = 2as
@@josue_mejia It's much faster to keep everything as variables. Compare writing a single letter to a string of digits. The numbers themselves don't actually convey any conceptual information, so you need to rely on your short-term memory and units to track what's happening. Compare that to solving symbolically, where you can take any equation in a solution and you'll be able to see what's going on: oh, they're manipulating the electric field, distance, and charge: E, r, q.
Reminds me of that dreadful first ever test of Physics I took...only six questions with multiple parts and it totally annihilated my trust and confidence in this subject 😭😂😂😂😂 That was years ago..but the trauma is still fresh!!!!!
0:29 Soooooo true. If I ask question, professor be like “Well if I told you that, you would have an answer.” And then they finish you off with... “You should know this, it was in the homework”
Actually happened: Me: “in the middle of quarter exam, 20 minutes left” Prof: *comes up to me, stares at my paper Prof: “you should be done by now” Me: *moves my elbow so that prof can’t see my work
Literally my physics teacher on our first physic exam ever: "Don't worry, the exam just has 2 tasks" ... There were 1.1.a 1.1.b 1.2.a 1.2.b 1.3 2.1.a 2.1.b 2.2.a 2.2.b 2.2.c
*When u find out there’s a formula sheet on the last page after you already attempted all the questions* 😂😆😂 his reaction was way calmer than expected, I would’ve probably just burned down the school in a rage of disbelief
I feel this in my soul. 😂 I made I through 6 years of college without ever needing to utilize my IEP (which allows for extra time on tests)...until physics.
You have inspired me to get a little more creative. I’m brainstorming some ideas for videos other than instructional math videos. Thanks and stay tuned! 😎
High school physics: wow, this is engaging and fun... College Physics: if I have to draw another force diagram, I’m gonna kill someone...I still don’t know how to do like 70% of the homework for chapter 2...
Engineering student here: For my first test of the year I was doing basic solving circuits. Somehow I ended up with a supposed current of 7 amps flowing through an 8 ohm resistor. The total current of the circuit was 3 amps. I was like: “either I just discovered a revolutionary fact about the laws of physics. Rewriting much of our current understanding of the universe and laws in which we all operate. Or… I have made a colossal mistake somewhere buried beneath 3 pages of math.”
I feel this. My thermo homeworks were 4-5 problems with parts a-e on all of them. On average took me 8-12 hours depending on how unreasonably difficult the problems were. Exams were the exact same format. Never finished more than 3 problems fully on an exam...and I still got a B+.
Professor: "The exam is really easy. You should have no problems with it." Everyone else: "This was quite honestly one of the hardest exams I ever took."
Me : Hey physics! Why are you always wearing that mask? Physics : Take this off and see for yourself Me : takes it off *Mathematics* Me : (nervously laughing) Let's keep this on shall we
I’m in 10th grade (first year actually having physics physics) and I know it’s obviously nothing compared to college level physics but man this video is basically me during my tests.
