Exam Definition and 886 Threads

Hi everybody. I am going to exam on Monday. I would like to make a experiment on how to measure the coefficient of friction. I know, that I can find the mu(s), by taking the tan to the angle α. μs = tan(α). Is there somebody, who has some others ideas how to measure that? Somebody...

can someone clear my concepts about these two equations ? Equation 1... Concentration(g/dm3) = Concentration (Mol/Dm3) % Mass Of 1 Mole Of Solute Equation 2... Number Of Moles Of Solute=Concentration(Mol/Dm3) x Volume In Cm3 % 1000cm3 reply quickly.. got my chem school exam tommorow...

The question is: let V1=(2,2,0), V2=(-1,2,1), V3-(1,1,4). There three vectors determine a parallelepiped. P draw it. (a) (this is the one that is giving me trouble) Determine the length of its main diagonal. (from origin to opposite vertex). I can't seem to figure out what it means from...

So a lot of my engineering friends not in EE are required to take the FE exam, but I noticed that it was not required for my major. I am graduating in December, and so far out of the dozens of companies I have applied to only 1 has asked me to take the exam. I guess I am wondering is why...

Hey, I've been going through a few past papers for an upcoming exam on complex analysis, I found this T/F question with a few parts I'm not confident on, I'll explain the whole lot of my work and show.[PLAIN]http://img404.imageshack.us/img404/2069/asdasdsu.jpg a) |2+3i|=|2-3i| so false b)...

Homework Statement ceiling light are connected in a parallel circuit, if one of the light bulbs burns out, will the other two bulbs be brighter? pls help me >.< my science exam is tomorrow.:(

Homework Statement Given x+y = 6\sqrt2 a + b = 6\sqrt 2 Find minimum value of \sqrt{x^2 + a^2} + \sqrt{y^2+b^2} 2. The attempt at a solution I had plotted the f(x,y) with constant a ,b And that's all. I don't realize how to do this. Any comment will be appreciated

This was a problem on a midterm I just took. Homework Statement Let f and g be linear transformations such that f: C^n ---> C^m is injective and g: C^m ---> C^n is onto (C = complex numbers). Prove or disprove with a counterexample: g composed with f is an isomorphism. The...

Have my first physics exam Thursday which I am told consists of 6 questions and one proof. I am curious on thoughts of what a proof on an exam may consist of, and it there is any pages or books I could reference to give me some basic proofs or ideas of what I may see on the exam and how to...

http://spectrum.columbiaspectator.com/wp-content/uploads/2011/04/harvardexam.pdf Ok, so the Latin and Greek sections may be outdated, but everything else is still fair game for today. Brutal test.

F(x) always exists and is differentiable as long as f(x) is continuous. Do you agree?

Hello all, I've got a question for folks who have taken the FE exam. I've been doing some thermo prep questions, and I've come across several sample questions (Non-NCEES written) that give properties of steam at odd points, say 1.8 MPa. In the reference handbook I'm using (2008; the 2011 PDF...

How often do you have post exam anxiety? I have most often. After I give my exam , i keep on guessing the marks that i will score. If the guess oscillates around pass marks, then it makes me more anxious and that harms other exam I give.

Homework Statement From an exam in calc 2 we are reviewing simple integrals. This one was annoying because it actually contained algebra.. regardless. \int(\frac{1 - y^{2}}{y^{2}})^{2} dy Homework Equations The Attempt at a Solution First I broke it into two fractions, and...

Homework Statement A person throws a ball with 13,5 m/s straight up. Calculate the maximum height that it will reach from the point where it was thrown. Also find the velocity when the ball is 1.50m above the starting point. Sorry if the problem is hard to understand, had to translate it from...

Im planning to take the FE exam and would like to get some info. For one, is this a standardized exam in that the questions are generally taken from the same bank (similar to the way FAA knowledge exams are) or is each FE exam individually created and used only once? I just want to get an idea...

[b]1. I have two calculators. including the Texas inspire cx. I can't make either of them work reliably on trig questions. I have an exam sunday and i need to be sure how to use my inspire. [b]2. Summation: [50][0.5] + [50][0.07cos35] + [100][0.1cos35] = 13.55 [b]3. Now i got this formula off my...

Well folks, I will be sitting an exam tomorrow morning at 9am in which I have to travel 2 hours prior and maybe fit in an hour of revision. Anyone recommend good energy sources for the 3.5 hour exam? :-) I was thinking redbull drink...:devil:

Homework Statement find the integral from 0 to 3 of (5x^2+30)/(x^4+13x^2+36) Homework Equations The Attempt at a Solution I thought it may be an integration by parts question, so I tried that first, but the book says that I should be using substitution. So I tried using u=x^2...

Dear sir/madam I have tried to do this question but can not figure it out. I gave up, but google gave me physicsforums site. I am very greatful and thanks for being genorous. Thanks. question is attached

Hi, I am a recent grad with a BSEE and I will be taking an exam for a job. The exam will consist of the following: RF Microwave Devices, Digital Devices, DC Electronic Theory, Electronic Measurements, Electronic Math, AC Electronic Theory , and Active Devices, I have knowledge of...

Hello! My exam is tomorrow... Help will be much appreciated... Say l=0 is given. My hemiltonian is \bar {H}=\frac {1} {\hbar} \Omega (\vec {n} \cdot \vec {L})^2 And we use "base states" that are L_z eigenstates, |1 m> n is a general direction unit vector. Now, I am looking for...

I have an exam coming this week and the book I use is Fundamental of physics 8th edition. Chapters include from 30 - 36 Induction and Inductance Electromagnetic Oscillations and Alternating Current Maxwell's Equations; Magnetism of Matter Electromagnetic Waves Images Interference...

Calc 3 exam tomorrow! Check my solutions please! Takeing a practice exam but don't have the solutions, anyone who could verify my solutions would be appriciated! First problem Find the scalar equation of the plane that passes through (2,-1,0) and is perpendicular to the line x=1-t...

This is ridiculous. I couldn't decide where to post it, as it is a little bit about politics and a little bit about stastics, so there are reasons to post in other forums as well. It can be even a brain teaser (see the question at the end of the post). For those of you who don't know -...

exam problem : solve exponential withh ... log? This one is killin me! 36^x-6*6^x=-9 please show and explain steps

Homework Statement See attached file for relevant questions. I'm finding the Op-amp questions in section A very difficult. Any help with these questions would be much apprietiated. Homework Equations The Attempt at a Solution

Implicit => inverse function theorem (urgent due to exam, please help) Homework Statement Prove the inverse function theorem, knowing the implicit function theorem. Homework Equations The statements of both theorems... Can't think of much else. The Attempt at a Solution...

Hello friends .. I did a physics exam last week and had many doubts on questions 1 - d) e) and 2 - b) c) ... I tried to solve the test at home but I could not .. if someone can give a help I would greatly appreciate it! items d) and e) the question is a damped harmonic oscillations on the fluid...

Hi everyone. I'm currently preparing for my upcoming mid year exam which examines: -motion in one and two dimensions -electronics and photonics -special relativity. I am in year 12, so I was hoping that you may be able to recommend some free exam papers/ any resources that could...

Hi everybody, I've got a thermodynamics exam coming in a few weeks. I couldn't sit the exam when I took the subject 12 months ago because of work commitments so I'm sitting a deferred exam this semester. Trouble is I have forgotten most of it, and having difficulty getting help from lecturers...

Homework Statement [PLAIN]http://dl.dropbox.com/u/14490370/bjt.png Homework Equations beta=Ic/Ib By 'ON' I think the lecturer means the saturation region and by 'OFF' he means cut off. The Attempt at a Solution a. My reasoning is Ib= (Vs-Vbase...

Hello everyone, sorry if this is posted in the wrong section; I just signed up. Homework Statement Okay, so the question in my textbook is: "A car engine needs 1000W to start it. The starter motor supplies this power. The starter motor is 80% efficient and it runs off a 12V battery. a)...

http://min.us/lcyfgi My physics teacher told the class that this question had no valid answer choice (none of the choices were right). After further research at home today, I think the answer is (2) - or the wavelength is equal to the distance between A and C, as...

Basically there are 2 equations ; x+2y+3z = 1 2x+4y+6z=2 I put them into a matrix and row reduce to get 1 2 3 | 1 0 0 0 | 0 so we can say x = 1 - 2y -3z and let y and z = 0 to get a solution is (1,0,0) Now i need to find the nullspace to find the whole solution set; so x +...

Homework Statement Hey, This is a question from a sample exam we are given for our engineering maths exam. Firstly given that the Fourier series contains only "sin(x)" doesn't this mean that it is an "odd" function? Can the period be calculated from the given function easily? Secondly is...

Homework Statement http://physics.ku.edu.kw/LectureNotes/TheoryCourses/PHYS102/ExamPapers/y1011-2-md2.pdf so i just did this exam and they gave us model solutions and I don't agree with conceptual question number 1 the answer should be 2 because it isn't connected to battery therefore...

Hi, this is my first post. I did a quick search and didn't see anything relevant. I finish my B.S.E.E. in August. Would it be wise for me to take the FE/EIT (Fundamentals of Engineering / Engineer in Training) exam before then? I have received some conflicting answers to this question. It...

You have a circular capacitor (radius = R). Find the magnetic field from the central axis, for r > R? I have solved the first one for r<R by using ampere's law: /B dr = my(I + d/dt(flux of electric field)) the answer is hard to write in a post like this, but I will do if necessary...

hello to everyone, WHO CAN HELP ME!? i have an exam tomorrow in morning, and i need an solution of a math problem now, if can some one help me with the solution The Problem is : 8. Geometric progression is given to four members. If the members of this progression were added...

Homework Statement I'm doing a review for a Mechanics exam I have tomorrow and this first problem given on the review struck me as odd. Problem Statement: An 89kg boat that is 6.6m in length is initially 7.1 m from the pier. A 27 kg child stands at the end of the boat closest to the pier...

I'm having a really hard time solving these word problems. ANY info on how to get the pictures drawn, which sides or angles to solve for, and instructions on how to solve would be greatly appreciated! 1. A tv antenna on top of a house is 4.50 ft tall. From a point on level ground the angles of...

well i have an exam on mon so i ahve been practicing I am not very sure how to do this qn . this seems easy but i want to make sure any help would be greatly appecitated .ITs a pcture[PLAIN]http://a6.sphotos.ak.fbcdn.net/hphotos-ak-snc6/216457_217324648278600_100000032007600_930824_4465603_n.jpg

Homework Statement Which of the following statements about conductors under electrostatic conditions is true? (A) Positive work is required to move a positive charge over the surface of a conductor. (B) Charge that is placed on the surface of a conductor always spreads evenly over the...

compute the limit lim as x,y --> (0,0) of (x+y)*ln(x2+y2) i would use polar coordinates if (x+y) was (x^2+y^2) but that not being the case is messing with me. and than another one is the same parameters, but of (x^2*y)/(x^4+y^2). for this one i attempted to do the partial deriv of both x...

I've just finished some past exam papers and when marking them using the mark scheme something confused me a little One question said when a fire engine moves away from an observer, the pitch of the siren decreased, why and I chose the wavelength of the sound wave decreases The mark scheme...

The graph of the function f, consisting of three line segments, is given below(#5) "[URL Number 5, collegeboard website[/URL] a)compute g(4) and g(-2) I have no idea how they got to that solution. I have been looking at it for a long time and still do not understand! Please help!

Hello, I am currently studying previous AP Calculus AB exams and I was wondering if someone could explain how to solve the following as clearly as possible so I have a better understanding of these problems in hope to prepare my for the exam next month. R is the shaded region in the Figure in...

I just wrote an exam in Algebra II, and one of our true or false questions got me thinking. Does every field have a subfield which is isomorphic to the Q or Z mod p? I put it as true, for the wrong reasons, vaguely remembering a similar statement about integral domains and mixing it up. So...

This is a multiple choice question supplied by the AP Chemistry Course Description, available at apcentral-dot-collegeboard-dot-com. I'm not sure what you are supposed to know to answer it. http://apcentral.collegeboard.com/apc/public/repository/ap-chemistry-course-description.pdf...