Tips — 395 discussions

Hello, my name is Alex. I am a senior who wants to pursue either a degree in chemical engineering or in aerospace engineering. I love math and sciences like chemistry, but my tenure with physics has been dismal at best. My physics teacher is very bad at teaching, and I just think that he...

Hello, Next year I will be taking more than 6 ap classes and I was wondering how to manage my study time and how I study. I will be taking two exams on physics next year (AP Physics C: mechanics and electromagnetism) along with many others. The questions are: 1. How do you find time to study...

Hello There! Can I have some tips for taking ACT. I took for the first time and got 26, can y'all tell me how I can get it into 30's?

Hi folks, can you guys share your experience and tips for understanding this subject? I find the sheer amount of problems and their novelty very difficult to reconcile. I mean I understand the definitions and theorems well and can usually apply them in straight forward cases, but the many...

I'm starting calculus 1 (math 220) next week and I was wondering if there were any specific things to keep in mind or watch out for. Things that I should pay a little more attention to than normal or things that are confusing unless you look at them a certain way. That kind of stuff. Thanks.

Am not sure how to even approach this problem:

Hi. Table of contents: I: Summary II: Introduction III: Subjects I study IV: My problem V: Schedule and time I can spend studying VI: Questions I have I: I'm taking three subjects that I failed due to missing out on studying the last two months of the semester. I will take these exams again...

Hey guys, I'd really appreciate if anyone out there can give me tips for training Zombies in Survival in the Town map, because I keep getting stuck near round 30 or so when I have to Pack-a-Punch in the middle of the round since my ammo keeps running out mid round and I have to use the Mystery...

Hey guys! I'm asking all the people out there if you could redo high school what are some of the things you would do to get ready for a career in science? I would love to get a career in theoretical physics and being such a vast subject I was seeking some insight as to what would be a great...

Hi everyone, I haven't been successful in Discrete Math this semester. I have finished all of the calculus I-III series and I did very well. I want to know if anyone can give me some tips on how to study for my final coming up in a few days. Now, I understand that is a vague question but I am...

I just transferred to a 4 year university from a community college. I got all of my gen. ed and core engineering classes out of the way at the community college while working 28 hours a week. It was a challenging balance, but I managed just fine. The difference now is not so much the difficulty...

Ill be attending a masters program this spring semester and they require a Placement test. I am wondering what's the best way to get back in the swing of things.? any good suggestions?

Homework Statement 2. Homework Equations [/B] See question The Attempt at a Solution Ok 1a) is dead simple. But I am struggeling with part b. I plug in all the variables. But cannot seem to get a and b... I do this: (-b)(S_x)(a,b) = E(a,b) and then get -b^2h/2= Ea and ah/2=E I don't...

i have a calc 3 test on monday and i don't know why but I AM TERRIFIED. probably because i have an exam for econ the same day. any exam or pre-exam tips? how not to be afraid?

Hey, I'm adult but going to university for the first time, and I am taking Physics. My first semester is all about Math. Algebra and Analysis. I'm usually pretty good at math, but right now, we are "laying the foundation" for calculus, and of course all these things we took for granted...

Hello, Is there a solution that can eliminate the slowness of an invidual to a certain degree? I've currently worked in 1 month or so with an introductionary physics textbook and I'm almost done with it, but at this pace I think that it is a bit too slow. It can take me 12-30 hours to...

For example, if it takes 60 watts of Power for a machine to fly, yet loses (for instance) 2.5 * 10^3 Joules of its energy because of the air resistance, what's the amount of "Power" that was really given in the first place? The time of flight for the machine is 30 minutes to get to the height...

Good evening guys, next period I'm going to take Calculus II at the University, but turns out that in my university they split it in Calculus II-A and II-B. The topics covered in each are basically those: Calculus II-A: Definite Integral, Techniques of integration, Improper integrals, first...

Hey! I'm planning on applying at some schools in the US next year/this year and I need ot take the GRE exam this fall. I've looked at some old exams and they look pretty straightforward, but I was wondering if anyone knew any resources for the physics exam (i.e. practice tests etc.). Thanks!

I want some tips on As and A level. I mean, I am giving Paper 1 that is MCQ this 11th June, so what concepts should be clear and how do I study in these days ? I want some hand written tips on topics even :¬ 1) Projectile Motion 2)Momentum 3)Torque 4)waves : Standing waves and...

Hi, Is there a better way to write this? 'terms of order O(R^{-Y}) where Y>1 are neglected' I feel like this is a bit clumsy. Thanks for the help!

Homework Statement A wind turbine has a rotor (its rotating section) which has a moment of inertia I = 1.26 × 10^7 \text{kgm}^2. At peak output, with the rotor completing 0.25 \text{ revolutions per second}, the turbine produces a power of P = 3\text{MW}. The tips of the rotor blades sweep out...

The thing is I love computers, and I think a degree in Computer science can amplify that passion. However, just this time, I began to have interest in Physics to which I have no idea that I have. I am sincerely considering taking a double degree in both of these areas. Unfortunately, I don't...

Hello, Can someone please provide a more detailed explanation for the attached image? :) i need to explain this to my 6yr old nephew and I honestly cannot find an explanation for his age. Thank you.

guys today i have my chemistry practicals.i have to do titration.i have to suck the pipette with my mouth.it is a rule that everyone must use their mouth only.it is very difficult for me to suck in exact 20ml of the solution and pipette out.so i am not getting the exact titre value.are there any...

Hi, I'd like to know what tips you have for someone looking to work a consistent 12 hour day 6-7 days a week.

Hello, I have recently been given an experiment, where i will need to build a boat. The requirements are ° the boat must have dimensions smaller than 8in x 8 in ° have a mass minimum of 25.0 grams °the weights when loaded into...

Homework Statement I know this tipping a block question has been asked many times and I know how to find the critical angle at which a block tips over. I was just wondering how one would go about analyzing the torque of the system. We all know that anywhere from 0 to the critical angle...

Howdy, I didn't find anything particularly useful when I searched for this, which surprised me! Anyway, over break, I decided to buy my textbooks early and to semi teach myself the basic concepts before I actually take the class. And as break is coming to a close, I looking back and I...

please help me i need to memorize exactly the below essay In 1928, Sir C.V. Raman discovered experimentally, that the monochromatic light is scattered when it is allowed to pass through a substance. The scattered light contains some additional frequencies other than that of incident...

Hello everyone. I'm a first year MS Physics student and I can't think of a research topic. :confused: I hope to start next year in my research (I'm still doing coursework and teaching right now.) Any tips on how to start on something? I don't want to continue my research in undergrad...

Hello, I'd like to ask a few questions related to career choices and the requirements to become an astronomer or astrophysicist. I'm an eighth grade student from Brazil and, since I was a child, I have always been fascinated with planets, stars, galaxies, the universe itself, and the...

I'd like to hire an astronomer to help me with a writing project (fiction). Do you guys have any tips on how I can go about doing this? The work should be somewhat simple (I would think at least), it involves crafting a fictional galaxy and a few star systems therein. Sorry if this is the...

Hi, we just moved our acid cabinet to a different floor, emptying it out during transport. I was thinking of taking the opportunity to give it a good cleaning. Any suggestions? It is a blue Flinn scientific cabinet. There is some discoloration on the inside walls and shelves. I am...

I have a very hard teacher for my Calculus II class and I think I might not pass. Don't get me wrong, he's a great teacher, but he demands a lot of work to get a good grade. I currently have a 65.2% and to get a C we need a 64% (he grades on a curve). I feel like my head is just above water and...

I know this is a simple problem but new at it. answer not in book so hope correct.

So I was forced by my principal to prepare a presentation for the morning assembly a few days from now (as a punishment :| ). Worst part is: The presentation has to be about a...Yo-yo -.- Specifically the physics behind bouncing a yo-yo up and down. I don't think I'm good at public speaking...

Hi all, I want to be a multibody expert. How could you do that? Is there any book you suggest me to read? Which sw do you suggest me to learn? Any suggestion is appreciated. Thanks

So basically I'm trying very hard to get an A in my "Electricity and Magnetism" also known as physics II course at my university, I do every homework problem assigned read and fully contemplate and comprehend the chapters in my book ("Physics for Future Scientists and Engineers") assigned. I go...

Hi guys, I've just started doing a bit of research in preparation for trying to print and make some DIY circuits. I was just wondering if there are techniques that are favored over others. Also I don't have a massive budget, so price is quite an important factor to me. From what I can find...

So this one is going around Facebook. I wanted to run it past my trusted scientifically literate friends here at PF before heeding any of the "advice."

Hi, For a final drive of a light commercial truck, I have to design a final drive helical gear pair. The expected ratio is 8.2. The centre distance is 134 mm. The input max. torque is 120 Nm. I have sized few combinations. I have a feeling that this ratio is too deep. Pl. share me your...

I'm a Physics undergrad and I find that although I have the motivation to study for long periods of time, my mental acuteness declines throughout the day. I tend to start the day at around 8am and work until around 8pm (with a few hours worth of breaks scattered throughout). If I'm not in class...

Hi, I think this belongs in this thread? I have a very weak math foundation stemming from high school. My Algebra II teacher was pretty bad, but it was my fault that I did not put the effort into learn and teach myself Algebra II. Then my geometry teacher was an easy A because she was new to...

hello every body Can anyone help me for searching about this topic, How to generate electron beam? I want few information about electron source, in a simple explanation, and namely, not complete explanation . please help me. thanks.

I simply cannot get interested in geometry, but i realize it's an adequate skill to have, does anyone have any tips for me? It's also not a matter of mathematical skill since I'm still in the 10th grade and am already capable of doing S.A.T level 5 problems, i just find them a nuisance to...

does anyone have any tips on learning how to do proofs. completing a proof isn't something I am good at, at all. I know how to get answers and I can do the math but explaining it to someone step by step, using the right communication. Seems like a foreign language to me. any tips on learning...