Tips Definition and 533 Threads

Hi! I have problems with this demonstration Let $z= x+iy , x,y \in \mathbb{R} $ then $|x|, |y| \leq{|z|} \leq{\sqrt[ ]{2}} $ , $max \{ |x|, |y| \} $

Hey guys, I have something to say, is not a question, i just want some guidelines about me college experience. Here is some background info: Currently, i am working 40 hours a week (Monday-Friday) and lectures in college at night (Electric Engineering), 18 hours a week with 4 subjects...

I found one example how to write papers etc. http://www.ncl.ac.uk/students/wdc/learning/ Is it still something like this? Is it something more oriented to physics?

Therefore this thread, to see if there any ideas that didn't cross my mind yet.

Hi Community, I have the following question: I have done basic solving of limits and also of Riemann sums but never had to do them in the same question. Would I be correct in saying that I need to solve for the Riemann sum first then take the limit of the integral? Cheers Nemo

I am a newer tutor and trying to deal with a couple issues. How do you approach students who 1)frequently make mistakes (negative signs, etc) and 2) think they understand something but didn't do well on the test of that material

I am planning on doing a huge self-studying over geometry and hopefully a little bit a trigonometry session over the summer at my public library. Over at a friends house, I see that he has a book about "algebra 2 for dummies" in his pile of science books and it got me wondering, are the "For...

Hey guys I am writing here because I know this is a big community and I could really use some advice. I am 27 about to graduate from school with a business degree and a GPA of 2.9. I'm embarrassed to say it but it's the truth. My concern is that now that I will be graduating, I want to focus...

Hello, I got "b,b and U" in 3 modules of As which was written as overall of "b" grade . Now I have got 2 modules for A2 examination. how much should I score to get an A?

( I am from sweden) So soon i got a bachelors degree in mechanical engineering with orientation innovation and design. The focus areas in school has been product development, cad, FEM etc. We have worked most with Creo 2.0 but I am now learning Catia V5 at home because many companys use it. I am...

Here's a long shot... I go to a very small school with only ~8 graduates per year. Of those 8, 4 or 5 will apply to graduate school, and every year only 1 or so will be accepted. I'm preparing to approach the chair of the department to propose a one-hour seminar every year (or semester) to...

Homework Statement how to calculate the specific volume in this question ? the author didnt gave the ans though. Should i take the volume displaced by the water or volume of the stone ? the specific volume is given by the formula v= V / m Homework EquationsThe Attempt at a Solution

Hello everyone, I am a first year university student studying astrophysics. I have a question regarding test-taking. I've noticed this year that during exams I tend to leave a lot of marks on the page. That is to say, I study thoroughly and devote a lot of time to doing so, but when it comes to...

Hi! Yes, I know that faster-than-light travel is impossible. But please stay with me for a while to help me understand this. Let's imagine we take some unobtainium and build a 12-km-radius propeller, attached to an engine able to accelerate it up to 250,000 rpm (like a turbocharger, or not a few...

Every math major eventually learns logic and standard proof techniques. For example, to show that a rigorous statement P implies statement Q, we suppose the statement P is true and use that to show Q is true. This, along with the other general proof techniques are very broad. A math major would...

Do you have any tips for getting high marks on AP Physics Tests and getting a high score on the AP Physics Exam. For example, you may know material that can help you while doing the course.

Homework Statement I have an egg drop project in my high school physics class, dropping 2 eggs in one device from 6 meters up. There are some certain guidelines. I was just looking for some tips or ideas of what I should do. So here are the guidelines: - Device has to hold 2 eggs. - It must...

Hi all, I'm a freshman that's about to begin my second semester taking 3 technical courses and 1 gen-ed course. I've gotten accustomed to studying for math and science classes in university, but I have to take this non-western gen-ed (and due to scheduling conflicts with my main 3 classes, I'm...

Hey guys, I'm super duper new to getting involved in online communities based around one of my life pillars. Basically, I love science and everything pertaining to the advancement of the human race as a whole. If you've any advice whatsoever on your learning habits, practicing math, or anything...

Dear PF Forum, Anybody knows how to remove the star? I forgot when I unintentionally put that star, now I want to remove it. But I can't. Some websites suggest by inserting some HTML (or Java script? Can't tell the difference) script. Is there an easy way withouth signing off google? Thanks...

Hi, I have 0 background in engineering nor robotics. I have a project requiring both, so if you can help at all or give good feedback that would be very appreciated. The true reason behind my project is a bit secretive for me, purely because I think it’s a smart idea and I don’t want the idea...

There seems to be enough of us night owls who use DSS for me to open a discussion about how to 'tune' all of the parameters to get an optimal result. Personally, I've used the program for a few years but still have no clue about many of the settings, and would appreciate any insight. First...

Hello, I was recently given the opportunity to stay at Berkeley for 6months as a visiting scholar during the next spring semester. I would like to know if anyone has been living in the region and ask a few questions. Where is it better to live and what is the best way to find a share...

Imagine a lamp tips over and hitst the top of the head. the lamp weighs about 300 gram and the distance when it started to tip over and hit the head was about 15 centimeters. in the moment of the impact the lamp has tipped over excactly for 90 degrees. The material is Metal that deforms only...

Hey there, I will be taking calculus 2 this spring semester and I would like to know what topics from calc 1 I should be reviewing, I did receive a B+. I am also aware that trig is highly involved and my trig skills are not that good, so if there's anything from trig that is mandatory to review...

There are times when I don't quite have the energy for my difficult graduate work, but I still feel like doing something physics or math related. I was wondering anyone here has had success doing tutoring online using one of the many available platforms that combine chat, video, and digital...

Currently I am studying IB HL physics, however I am not that great at math and constantly find myself struggling when it comes to the mathematical concepts. Are there anyways i can improve my skills? Thanks.

I bought the celestron firstscope about 4 to 5 months ago.in the beginning I was pretty excited and enthusiastic but as time wore on,I found myself away from the scope.now I want to restart astronomy but I would like some tips to make it more fun and interesting so that my scope don't end up...

Hello, I am struggling with vectors, and general problems tagged along with them. How can I get some more practice aside from my book? What are some trusted resources that work well? What is your personal experience with vectors? Are (were) they a challenging obstacle for you? What is the best...

I am a freshly graduated engineering student and am currently writing my first CV. At the end of my studies I attended one conference as a research paper author and another one as a guest lecturer on the same topic as the previous conference. I suppose both are important to be included in a CV...

Hello all! I've been on and off this forum for a little bit now. Background: Graduated from top 50 (US News, as if that means anything) school with a degree in applied chemistry with a 3.2 gpa. I had two papers published in organic chemistry, one poster in analytical and did research abroad...

I'm currently a mechanical engineering student and many courses that I take involve topics that have multiple conditions. For instance if event "A" happens then apply Table "a" or Equation "aa". It becomes difficult to solve problems when topics have multiple conditions especially when similar...

Hi folks.I'm 3rd grade mechanical engineering student.I want to make cpu cooler.I will make pid controlled fan with an arduino. PID path is easy but I could not find anything about fan dynamics. I want to design my own fan.I need something like "fundamentals of fans" that should answer my...

Expanding the series to the n^{th} derivative isn't so hard, however I'm having trouble with the summation. Any tips for the summation? e.g. taylor series for sinx around x=0 in summation notation is \sum^\infty_{n=0} \frac{x^{4n}}{2n!} Thanks.

Homework Statement I'm not exactly where a question like this would belong, so I am going to try here. It feels like as we go higher in our courses, we're expected to be able to work with more complicated equations. One example would be a problem involving transmission reflection ratios for...

What would be a good way to prepare for a final linear algebra exam (vectors, planes, matrices) where every question is asking for a proof? Thanks

Hello, It is almost summer and since I am a high school student, there is a lot of free time. I plan on spending the time studying various subjects (mathematics and computer science). Regarding this, I have some questions on studying topics in mathematics and computer science: 1. What is the...

Hello guys! i am electrical & electronic engineering, 2nd year (almost done) hopfully 3rd year in the upcoming term after summer, and i chose my modules for next year but i haven't taken any computing or microprocessors module as I am really bad with them, but I am buying an arduino next week...

I just want to know the correct mathematical workings of why the box will tip over when distance x of the normal force from the center line is b/2. what I know is when $\sum M$ about the point of application of the normal force is zero, the box will not tip over. so, mathematically...

The more work I do in the field of EE, the more I realizing that my general circuit analysis skills are usually the root of my confusion and could use improvement. Even after putting on my break-a-big-problem-into-smaller-pieces hat, I still find myself confused about the relationships between...

How do I exit? Time to write this down. :-)

Hey, share tips with me, how can we study physics effectively ? Thank you :)

hi guys I want to know How to make HF(hydrofluoric acid)? I Know how to make H2SO4,HCl,HBr And HNO3. Any help?

I need some tips studying about 1. Angular momentum and numerical problems based on angular momentum 2. Capillary action numerical problems based on them 3.Free body diagrams for force and numerical problems based on them 4. Elastic and inelastic collisions and numerical problems based on them

hi everyone, I have seen this phenomenon many times. People who used to be fascinated about physics no longer love physics anymore because of the stress/classes/jobs. One of my friend has had this issue and I had this also a while ago and it is coming back up. I would like to open this thread...

can anyone give me a hint on how to solve this probelem

Are you self-studying mathematics? Do you have any questions on how to handle it? Anything you want to share? Do so here!

Hi, everyone! Right now I'm on my second semester in university, and the problem I'm having now is that i find some kind difficult understand some classes like Integral Calculus, Statics and even Statistics and Probability and Statistics. Also on my first exams i got some low notes, so right now...