Review Definition and 477 Threads

A review is an evaluation of a publication, service, or company such as a movie (a movie review), video game (video game review), musical composition (music review of a composition or recording), book (book review); a piece of hardware like a car, home appliance, or computer; or softwares such as business software, sales softwares; or an event or performance, such as a live music concert, play, musical theater show, dance show or art exhibition. In addition to a critical evaluation, the review's author may assign the work a rating to indicate its relative merit. More loosely, an author may review current events, trends, or items in the news. A compilation of reviews may itself be called a review. The New York Review of Books, for instance, is a collection of essays on literature, culture, and current affairs. National Review, founded by William F. Buckley Jr., is an influential conservative magazine, and Monthly Review is a long-running socialist periodical.

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  1. F

    Help review for exam (last question)

    Question is Problem 7: Joule’s paddle wheel experiment consists of a falling weight which spins a paddle-wheel in an insulated barrel of water. As the weight falls, the water warms up. Assume idealized conditions with no friction in the pulley, string, and bearings. How much does the...
  2. V

    Review of Electrical Field Calculations

    Hello, I have an assignment in my Electricity and Magnetism course that covers the last few chapters dealing with calculating charge, using Gauss's Law, and electric potential. I'm going through them right now, but physics isn't completely my strong point so I would really appreciate it if I...
  3. S

    Is the Peer Review Process Biased?

    Evo asked in another thread https://www.physicsforums.com/showpost.php?p=2079435&postcount=54 The short answer is no. The reviewers are human and subject to human bias. Bias is an intrinsic part of human nature. Scientific reviewers are not immune. The peer review process is not perfect...
  4. M

    Pendulum equations - HELP review work, out sick

    Pendulum equations - HELP! review work, out sick Homework Statement What is the period ofa pendulum which makes thirty oscillations in 75.0 seconds? Homework Equations HELP! T = [l]\frac{}{}[/f] This is what I need! The Attempt at a Solution t=[75]\frac{}{}[/30] = 2.5 I...
  5. f95toli

    Good review of point contacts in 2DEG?

    As the title says, does anyone know of a good book or review article about point contacts (both quantum and "classical" non-quantized version) in AlGaAs/GaAs 2DEG? I am trying to find some information about their transport properties at MW frequencies (a few GHz), specifically information that...
  6. P

    Google Chrome Review: Hear What Others Think

    Has anyone actually used Google Chrome? I have a limited monthly bandwidth allowance so I'd prefer not to download it purely for test purposes, but would like to know what you guys think of it. Please compare it with whatever other browsers you've used/are using. Thanks! phyz
  7. D

    Tank Drainage Work Calculation

    Firstly, I'd like to quickly note that this isn't a homework problem, but rather a problem that I'm about to make up. I've done Calc IV already but recently my friend asked me for help on a problem involving the drainage of a tank and I got a little stuck in thought. I'd like to re-educate...
  8. P

    Physics 20-1 Final Review: Projectiles

    Homework Statement A student is standing on the top of a building and he throws an object into the air with a speed of 16 m/s at an angle of 25 degrees above the horizontal. If the building is 75 m tall, how far from the base of the building will the object hit the ground? Homework...
  9. P

    Physics 20-1 Final Review: Projectiles

    Homework Statement This question is something we got in our review booklet and I HATE projectile motion. An object is thrown horizontally with a velocity of 18 m/s from the top of a cliff. If the object hits the ground 100 m from the base of of the cliff, how high is the cliff...
  10. A

    Momentum Review: Force & Time for Rhonda's Brakes/Windshield

    Homework Statement Rhonda, who has a mass of 60.0 kg, is riding at 25.0 m/s in her sports car when she suddenly slams on the brakes to avoid hitting a dog crossing the road. She is wearing her seat belt, which brings her body to a stop in 0.400s. What average force did the seat belt exert on...
  11. J

    Don't Miss "Spirit": A Movie Review Warning

    Is there a forum for movie reviews? If so, this could be moved there. However, this isn't really a review, its a warning. If you're only going to miss one film this year, make it Spirit. Yesterday, my wife and I decided to pump up the economy and take in a flick. She said Australia was the...
  12. A

    Exploring Criticisms of the Peer Review System

    Recently I found a couple of articles that are critical of the peer review process. What are your thoughts about them? http://www.telegraph.co.uk/scienceandtechnology/science/sciencenews/3326091/Peer-review-the-myth-of-the-noble-scientist.html Article2
  13. J

    How Does Air Resistance Affect a Flea's Jump Height?

    Homework Statement Fleas have remarkable jumping ability. If a 0.50 mg flea jumps straight up, it will reach a height of 36 cm if there is no air resistance. In reality, air resistance limits the height to 18 cm. Homework Equations K=1/2 m*v^2 The Attempt at a Solution I tried to...
  14. C

    Ball rolling up an incline Final Exam Review

    Homework Statement A ball rolls up a straight incline. The dots in the diagram represent the position of the ball every 4 seconds. (The fourth dot is not intended to represent the turnaround point; the ball might still be on the way up at that point.) The instantaneous velocities at the...
  15. C

    Making the Light Final Exam Review

    Homework Statement Making the light. While traveling in your car at a constant 12 m/s, you notice a traffic light 44 m in front of you turn yellow. You know that the light will turn red in 3.0 seconds, and that you can speed up at a rate of 6.0 m/s/s. You’re also aware that it takes you 1.0...
  16. C

    Water Balloon Drop Final Exam Review

    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...
  17. Cyrus

    Avoid This Movie: A Review of "Water Bandit"

    Dont watch it. It was horrible. I mean HOR-RI-BLE. This bad guy is trying to steal all the water in bolivia. Yep, that's the plot. It's that stupid. He just wants to steal some water and sell it back for profit. Plus there is random action (I mean random) and characters just come in leaving...
  18. T

    Need some review, about magnetic fields

    Greetings. I've been doing some things for the past couple of weeks just for fun, but I have no way of knowing if I'm on the right track or not, so if anyone is willing to take a glimpse, feel free to point out any errors or say harsh thing, or throw tomatoes at me, because I need some...
  19. Shackleford

    How do I determine if a set is a subspace?

    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.
  20. C

    Trigonometry Review: Conflict Answer, Probably Me

    SOLVED! Thank-you jhicks and Tedjn! I am taking a basic calculus course and have some weaknesses when it comes to trigonometry. In this case, it's pure trig. Homework Statement The question states: "Find all values of x in the interval [0,2pi] that satisfy the equation sin x = tan x"...
  21. rocomath

    Adv. Linear Algebra: Review Topics Chapter 1

    Here is the link to my review topics for exam 1. http://math.uh.edu/~bgb/Courses/Math4377/Math4377-Ex1-Topics.pdf 1.2 Does the solution set to a linear system change under elementary row operations? The solution set does not change under elementary row operations. What are independent/free...
  22. S

    Random Matrices Literature Review

    Hello experts, I'm about to embark on a new line of research. Random Matrices as you might of guessed. Coming from a algebra/geometry background, I am looking for some simple papers along with some references you guys could give. I need to do a literature review in a few weeks, so please any...
  23. V

    Rotational Motion and Gravity/Planetary Orbits review

    I have a test Monday and I'm trying some review problems my professor gave us to study from. I'm not looking for answers I'm just looking for someone to help step me through a few of these problems. Thanks for any and all help you guys can provide. Homework Statement 3a). After starting...
  24. maverick280857

    Measurement and Stern Gerlach Experiments review articles?

    Hi everyone In my attempt to understand the details of Stern Gerlach experiments and measurment issues in quantum mechanics, I have come to believe that there is a lot to be learned from some of the basic thought experiments like interference and Stern Gerlach described in books...
  25. E

    Review Packet for Factoring and Solving Polynomials: Tips and Questions Answered

    I have this review packet and I have a couple questions. Homework Statement Solve the fallowing by factoring and making appropriate sign charts. 2sin^2(x)>sin(x), 0\leqX\leq2\piHomework Equations The Attempt at a Solution Well my main question is, can I divide both sides by sin(x)? In doing...
  26. M

    Can Physics Review Questions on Velocity and Acceleration Be Decoded Easily?

    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...
  27. M

    How Do Convex Mirrors Affect Image Location and Size?

    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...
  28. N

    Line Parallel to the Plane Equation (Final Exam Review)

    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...
  29. B

    What's the Best Calculus Review Book for Physics-based Courses?

    So I just started my Physics class over the summer about a week ago. For the first time, it is a course that uses Calculus a lot and so it will be a bit different for me although I do not think it will be too much of a difference. My current knowledge though of Calculus is very small and only...
  30. I

    Are My Test Review Answers Correct?

    Hey hows everyone doing, this is the first time I am posting HW. I need help with 4 problems which are from my test review. Attached are scan images of the test review sheet with solved answers. I need to know if I have done this right. Thanks. Homework Statement On image. Homework...
  31. Greg Bernhardt

    Bare Minerals Makeup - Company Review

    This is an interesting product because I know quite a few females who use it and I know some salons even use it. Bare minerals is a makeup kit. They claim it's made from crushed minerals and is actually good for the skin. They also say is free of preservatives, talc, oil, fragrance and other...
  32. I

    Seeking Another Opinion: Could You Review My Work?

    Could someone please check my work, I'm skeptical about it, but would like thoughts: http://indigojoker0.googlepages.com/Presentation1.pdf
  33. E

    Ideas for review paper on combustion

    For a project in my combustion class, I have to do a review paper on an area of combustion research. I don't know a lot about this field or the technologies that are at the forefront, so I was hoping the people on this board could help me out. I'm kind of a sci-fi geek, so I would like...
  34. F

    Can You Review My RBMK Reactor Diagram?

    I found these forums while doing background research. Since there seem to be quite a lot of experts hanging around here, can you review my RBMK reactor diagram - http://commons.wikimedia.org/wiki/Image:RBMK_reactor_schematic.svg ? Any comments are welcome.
  35. A

    Balancing Teeet Totter: Lever Arm Calculation

    Test Review help! Homework Statement Two children whose masses are 35kg and 55kg are on a playground "teeet totter" which is 3.0m long. Where must the fulcrum be placed so that the children will balance? (35kg on left, 55kg on right) Homework Equations sum of T=0 The Attempt at a...
  36. R

    Forces and Motion Midterm Review

    [SOLVED] Forces and Motion Midterm Review Homework Statement A bulldoezer drags a log weighing 500N along a rough surface/ The cable attached to the log makes an angle of 30 degress with the ground. The coefficient of static friction between the log and the ground is 0.500. What minimum...
  37. V

    Complex Numbers - a review problem (a - g)

    Homework Statement Evaluate each of the following complex numbers and express the result in rectangular form: a) 4\,e^{j\frac{\pi}{3}} b) \sqrt{3}\,e^{j\frac{3\pi}{4}} c) 6\,e^{-j\frac{\pi}{2}} d) j^3 e) j^{-4} f) \left(1\,-\,j\right)^2 g) \left(1\,-\,j\right)^{\frac{1}{2}} Homework...
  38. O

    Q&A: Review Questions for Quiz Tmrw

    Got a quiz tmmrw and i want to know what the answers to these review questions are. :D 1.-The total consumption of electrical energy in the US is about 1.5 x 10to the11th Joules per year. a. what is the average rate of electrical energy consumption in watts? b. If the population of the...
  39. S

    What Is the Best Way to Teach Special Relativity?

    Here is an article I submitted to ArXiv some time ago: http://uk.arxiv.org/abs/0708.0929 (Relativity without tears). It is about Special Relativity (in fact a sort of review of it) and contains nothing unorthodox at all (I hope), although the angle of view might be somewhat unusual. The...
  40. B

    Review these questions and complete uncomplete

    i am attaching the file please reply me as early as possible
  41. M

    Preparing for Logic Final: Union of T_n Satisfiable & Not Finitely Axiomatizable

    I'm studying for my logic final and I can't seem to find an answer for this practice problem: (Using < as proper subset since I don't have the right type) T_1 < T_2 < T_3... be a strictly increasing sequence of satisfiable L-Theories. a) Show that the union of T_n is satisfiable (over...
  42. A

    Testing What Are the Best Review Books for the Physics and General GRE?

    Hi (sorry if this has been brought up recently, but I don't see it and the search tool seems to dislike me at the moment). I'm a physics major in my 5th semester, and the time has come to start seriously reviewing for the physics GRE. Which review book would you most recommend? Do you...
  43. O

    Chem Test Review Questions (multiple chice) Need help , please

    1) Calculate the pH of a solution prepared by dissolving 0.370 mol of formic acid (HCO2H) and 0.230 mol of sodium formate (NaCO2H) in water sufficient to yield 1.00 L of solution. THe Ka of formic acid is 1.77 x 10^-4. a) 2.30 b) 2.09 c) 10.46 d)3.54 e) 3.95 2) The solubility...
  44. R

    Review of Thread: Speed of Balls Attached to Rod on Fall

    In this forum there was one problem. Two heavy balls of equal mass M are attached to long light rod. The rod is held vertical and allowed to fall, say towards right. What will be the speed of each ball just before the upper ball touches the ground. I can interpret this problem in three...
  45. Saladsamurai

    Solve Forces and Acceleration for Two Crates in Contact - Casey

    Two crates, of mass m1 = 40 kg and m2 = 125 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 40 kg crate. The coefficient of kinetic friction is 0.15. Find the acceleration: Calculate the force that each crate exerts on the other:I am...
  46. Saladsamurai

    Utilizing Coefficients of Static and Kinetic Friction in a Pulley System

    A 25.5 kg block is connected to an empty 1.00 kg bucket by a cord running over a frictionless pulley (Fig. 4-57). The coefficient of static friction between the table and the block is 0.400 and the coefficient of kinetic friction between the table and the block is 0.320. Sand is gradually added...
  47. M

    Trouble answering this please review

    Ive been working this problem for the past hours, and i keep getting the wrong answer... can someone check to see what I am doing wrong, and please correct me.. Question: An 18g object moving to the right at 26cm/s overtakes and collides elastically with a 33g object moving in the same...
  48. P

    Review Time] Can't Answer That Question...

    Review time; came across that question in the text...I DON'T KNOW! ...i hate this class. :"[
  49. W

    Fire tube boiler-literature review

    hello! i am designing a firetube boiler for my design project. could u suggest me some website where i could get interesting and relevant literature review on fire tube boiler. Thanking u in advance
  50. A

    Inequalities and other gr.12 calculus review

    Argh, I haven't done any calculus since gr. 12 and university calculus is killing me. Need some help with a few questions; and I know there are a few that I'm asking for on here, but they are only a few out of many (I've done most). Homework Statement 1. Solve the following inequality. (graph...
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