Exam Definition and 886 Threads

Im doing Final exam review this is the first question please check! Thank you! Homework Statement 1. Water balloon drop. You and your physics major roommate devise a plan to drop water balloons on classmates entering your dorm. Just as they cross a mark that’s 3.0 m from the door, you’ll...

HI, I have my exam in 2 days and I am wayyyy behind this course I'm am only looking for a pass since I cannot get it down...I was just wondering if anyone had any advice on how to tackle it all? Should I do problems from every chapter and try and get through it? Or is there a better method you...

So I read Irodov was the best prep for the Physics Olympiad, but what if I'm in Physics B and just completed a semester's worth of mechanics? I'm currently in Pre-Calculus if that matters. Another thread I read says most problems can be solved using differential eqs. but neither my current...

A bullet of mass m_1 strikes a pendulum of mass m_2 suspended from a pivot by a string of length L with a horizontal velocity v_0. The collision is perfectly inelastic and the bullet sticks to the bob. Find the minimum velocity v_0 such that the bob (with the bullet inside) completes a circular...

I'm just curious to know how many of you out there took this exam? I know some universities require you to take this exam (although not pass it) in order to graduate with a BS degree in engineering. I have not taken this exam but would like to in the near future as I plan on eventually getting...

[FONT="Comic Sans MS"]hello everybody . i have an exam in modern physics ,about relativistic kinematics and relativistic dynamics and quantum effects . but i have some difficulties when solving problems and i'd like to work it more . so if anyone knows an interesting link or a free ebook where i...

I had a MCQ exam today. 90 Questions with 4 alternatives. I need help calculating my chances of passing (which should be really small). I know 3 of my answers are correct. I gambled on the rest. Also, please calculate the chance of passing, assuming that my guesses were a little more...

Homework Statement given the identity \frac{2}{(r+1)(r+3)} \equiv \frac{1}{r+1} - \frac{1}{r+3} prove that \sum^{n}_{r = 1} \frac{2}{(r+1)(r+3)} = \frac{n(an + b)}{6(n+2)(n+3)} where a and b are constants to be found Homework Equations The Attempt at a Solution I...

Equation sheet limited to twenty equations spanning material from electrostatics to mutual induction. Halliday Resnick chapters 21-31. 2 hours. Seems like some questions depended on you having the equation accessible, which is a matter of chance. Core exams were usually 12 MC and 3-4...

Hi PF people, I'm asking a little question. We currently didn't finish the Physics I course, but it is near almost finished. There are several dates for the final exam and it's up to me to decide when I will pass it. The first date is 3rd of December thus soon. Of course I had tests before...

Hi I've just started a new Electrical Course and have been working through an old exam paper but i got a bit lost when doing the star connection question - see attached for question and work done would just like someone to tell me if any of what I've done is correct and where I've gone...

Hey everybody, nice to be a part of the forum. I needed some help understanding the concepts behind these questions. By correcting the questions answered incorrectly, we get some of the points back. Thanks for any help that I receive. Homework Statement Why is it that a fish displaces its...

I'm not sure how to tackle #6. I want to make sure my logic about the rest is correct. There's still a little fuzziness on how to show something is a subspace. I know it has to have the zero vector and be closed under scalar multiplication and addition.

Two problems. Problem 1. (30 Points) When leaving for work, a woman leaves a cup of coffee on top of her car. The cup stays fixed on the car, and the car moves according to the function: x(t) = (2.0 m/s) t + (1.0 m/s2) t2 At time t = 2.0 s, a gust of wind comes from behind the...

Physics exam tommarow NEED HELP! hows it going, I am new to this forum and want to know how to do these problems for my exam tomorrow, thanks for the help in advance let's get to the questions: 1) three vectors have x and y component vectors as shown in the table below: what is the...

Homework Statement Find a matrix that diagonalizes the following 2x2 matrix: A= (1/2 , sqrt(3)/2 sqrt(3)/2,-1/2) What will the diagonalizing matrix D be? What does D mean geometrically? What does A mean geometrically? Homework Equations - The Attempt at a Solution...

I know, I'm not using the template but that's because I'm beyond that. I need help with key concepts because my professor is not adequate. I'm struggling on my homework which is really bad because I have an exam in 2 days. Is there anyway that someone could talk to me over a mic and help me...

the attached file is an old exam my professor sent out. i my struggles were with 2 and 3. number 2: I am having trouble calculating the moments and picking a vector for r in the equation M=r x F which reads the cross product of the r and F vectors. Also to find the thetas, for part 2, can I...

a problem regarding momentum(from an entrance exam to Uni in Japan)(editted) Homework Statement Homework Equations In the space ,A rocket with mass M moving with constant velocity of V with no external force acting on it. 1) after sometime, the rocket release the fuel mass...

I heard that the most difficult problems are the one made up by the professors on exams.Is this true? Is there any way around this?

any ideas?

1) For all positive functions f and g of the real variable x, let ~ be the relation defined by: f ~ g iff (if and only if) lim x --> (infinity) \frac{f(x)}{g(x)} = 1. Which of the following is NOT a consequence of f~g? A. f^2 ~ g^2 B. sqrt(f) ~ sqrt(g) C. e^f ~ e^g (e as in the natural...

i posted this on the end of another question i asked but i don't think that anyone is looking at is as it has like 10 replies and i assume most people are assuming that the problem has been solved... which it has i had a question yesterday entitled exam question help which 2 people were kind...

two questions that i can't ever remember covering first of all finding a perpendicular vector find a vector perpendicular to the vectors a=i+2j-2k and b=-2i+3j+5k and secondly the equation of a plane?? through point with position vector (2,1,1) and perpendicular to (3,-1,2) what are the...

two part question the first part i understand the second part i dont first part is find the eigenvectors and values of the matrix (4,-1 then below-4,4) giving me lamda=2 (1,2)T and lamda=6 (1,-2)T after this we have part 2 that i don't really understand how to do, I've done it before...

Velocity, Acceleration, Displacement, Headache I have an exam tomorrow. Can you help me out with these physics questions? They are review questions that I am stuck on. 1) Distance is 45 km and it took 3 seconds what is the speed. If the displacement is 7 km north what is the velocity? *I know...

Homework Statement A woman of height 1.7 meters stands directly in front of a convex mirror 2.0 meters away. The mirror has a radius of curvature, R=-50cm. Find the location and size of a woman's image using the ray diagram and mirror/lens equation. ---------- 2. The speed of light in a...

Homework Statement Explain why the line <x,y,z> = <3,1,4> + t<4,-5,2> is parallel to the plane with equation 2x + 2y +z = 7 Homework Equations The normal vector of <x,y,z> [4,-5,2] and the plane equation 2x + 2y + z = 7 The Attempt at a Solution Well, I'm trying to review for the...

I'm preparing for an entrance exam and i have this problem that is puzzling me. tan(5x) = tan(3x) I suppose i should start off by: sin(5x)/cos(5x) = sin(3x)/cos(3x) but i don't know what method to use. Should i break everything down to a single x? Please give me a hint how to start.

I have been working on a series of questions dealing with gas expansion and temperature change for my PE exam. \frac{}{}

Give me some tips! Hey guys, Can anyone give me some tips for distance learning education, with the help of which I can perform well? I can score good marks in exams. Please give me some tips for it. Any help will be highly appreciated. Thanks in advance.

I want to get a book on inequalities to help prepare for the Putnam exam. Its common for me to spend about half an hour getting frustrated on a practice problem and then find that the only way to do the problem is with an inequality that I have never heard of. Does anyone have any...

URGENT: Complex Numbers Problems: HELP NEEDED FOR MY FINAL EXAM!? Q1: Write the numbers in the form a+b: i) (2+3i)/(1+2i) - (8+i)/(6-i) ii) [(2+i)/(6i-(1-2i))]^2 Q2: Simplify: i) i^11 ii) i^203 Q3: Show that the points: 1, -1/2 + (i*squareroot(3))/2, -1/2 -...

First a word of explanation about my circumstances, skip the italics if you're not interested: I have a (vitally important) exam on differential equations coming up in two weeks, and I have no institutional support (lectures, tutors, etc). It's not a subject I've studied in any depth before but...

My final exam is tuesday and I am having an extremely extremely hard time grasping arrays and strings. I just can't visualize how they work and I am stuck on how to get my printOwnedShares function to work properly in a project that will help me study for the final. This is what I have worked on...

Hey guys, I am studying for my final for Gen Chem and will be taking the ACS gen chem exam this week. Has anyone here taken it before and if so, what equations and/or constants will be given? Thanks for the help guys! Medline

hi, i have my SAT exams this saturday. i was wondering whether anyone would be having some tips concerning the test. I'm an international student (from mauritius). my mathematics is ok, but the english section might be hard, specially for words i never met before!

And, just a few minutes ago, I realized I forgot to square a constant in solving for rho in spherical coordinates in determining the limits of integration for a triple integral. I got cosine of phi as 1/2, which gives phi as pi/6, but since I forgot to square the two, it actually is pi/4. :mad...

take home exam urgent latex help! hi! i don't know anything about latex, but i need pictures a matrix: it is a tridiagonal matrix with (1-2lambda) on the main diagonal (except for the last row where it's 1-lambda) and lambdas above and below: [(1-2*lambda) lambda 0 0 ........ 0]...

Hi there, I'm wondering if anyone can help with this general problem. I'm studying for a BEng in Electrical/Electronic Eng degree by distance learning and am on the subject of Control. I understand most of the coursework and can do most of the questions in the notes. However, I've got hold...

Does anyone here have any suggestions on how to memorize things (Dates, names, places, etc) for a history exam? I'm taking a history of technology course, and the exam is next week. Hopefully someone has a good suggestion other than just reading over the material a hundred and fifty times...

Homework Statement Let P be the 4 momentum u be the 4 velocity a) Evaluate the Lorentz invariant P^2 b)Differentiate P^2=P_{\mu}P_{\mu} and show that \vec{u}\cdot\frac{d}{dt}\left(\frac{m_{0}\vec{u}}{\sqrt{1-u^2/c^2}}\right)=m_{0}c^2\frac{d}{dt}\left(\frac{1}{\sqrt{1-u^2/c^2}}\right)...

I'm doing a calc BC practice exam and I found this question that stumps me to the max: The function y=x^4+bx^2+8x+1 has a horizontal tangent and a point of inflection for the same value of x. What must be the value of b? I know that points of inflection are found from the second...

Abstract Algebra Questions - Need help for exam! Homework Statement I am studying Abstract Algebra in college and my exams are approaching fast.I need somebody to help me out to do a few exam papers. I am going to post the questions below from the exam papers and if you can advise me how...

exam help! Hydrostatics 1. Homework Statement A girl of mass 40 kg and volume of 40 liter wants to keep her head of volume 3 liter above water surface as she can't swim . how much air in Kg should she fill in her jacket?? 2. Homework Equations 3. The Attempt at a Solution mass...

Hello all, I've got an exam tomorrow so any quick responses would be appreciated. I'm following the Boas section on Laurent series... Anyway, here's my problem: In an example Boas starts with f(z) = 12/(z(2-z)(1+z), and then using partial fractions arrives at f(z) = (4/z)(1/(1+z) +...

:smile: http://funnyexamanswers.com/img/humandrawingis4.jpg http://www.funnyexamanswers.com/img/usecalctoproofofbatmanis.jpg interesting not exactly an exam answer but pretty interesting

First off, I'm not sure whether this should be in the homework section since it's not homework, but this seems the best place to get help with it. If it should be moved, please feel free to do so. These are a few problems I had with one of the GRE practice exams (from one of the Practicing to...

Im studying for the Fundamentals of Engineering exam (coming up April 12!) and came across this Thermodynamics problem in my review book. So the work for an isothermal process is RTA*ln(VB/VA), where VA was previously determined to be 0.103m3. In the solution to the problem, the RTA term...

I have a maths exam in 3 days, The topics are as follows, plus i included what kind of questions the topic will ask, not saying i don't know how to do any of these, but what's the most efficient way to revise these topics thoroughly? Basic arithmetic- eg. Evaluate...