Figure Definition and 590 Threads

  1. K

    Trying to figure out how to solve a formula for the energy of light

    Homework Statement energy of light with a frequency of 4.3 times 10 to the 14th s to the negative 1st Homework Equations The Attempt at a Solution
  2. P

    Why defined integral is figure area?

    Homework Statement Why figure area is defined as defined integral? i have signature P=\int\limits^b_af^{\prime}(x)\mbox{d}x=f(b)-f(a) what is a prove of this signature? I have other signature: P=\lim_{n\to\infty}\sum\limits^n_1\left(x_{i+1}-x_i\right)f\left(x_i\right) how it can be proved...
  3. B

    MATLAB Matlab figure: axis re-labelling

    Hi all. i am integrating in MATLAB and plotting the results in a y-vertical and x-horizontal system. where x and y symbolize j and i of a table. I have to re-label the y-axis, so instead of a 0 to 100, it should be 100-0. Is it possible to do that or does anyone have any idea or has any...
  4. S

    LaTeX Is it possible to write functions in latex for figure positioning?

    Hello, I was wondering if it is possible to write functions in Latex to place figures in a constant way during the whole document. What I had in mind is to do it in 'a MATLAB way', for example: In the document itself, you could call the function and specify the figures and the caption like...
  5. D

    How do i figure out the hydtostatic pressure in the tank

    an unpressurised cylyndrical storage tank has a thin wall of 5mm thickness and is made of steel with a maximum strength of 400Mpa in tension the tank radius is 3.75m the tanks height is 20m (the tank is standing on its base like a tower) Determine the maximum height it may be filled with water...
  6. K

    What Pressure is Needed to Release 400ml of Hydraulic Oil in 10 Seconds?

    hi good day everyone, Typically i have a 300mm height, 80mm diameter cylinder filled with 400ml hydraulic oil. It connected to 2m length pipe via 12mm diameter exit. Density of hydraulic oil is assumed to be 900kg/m^3. My task is to release the 400ml hydraulic oil in 10seconds. So in this...
  7. K

    Is There an N Where n > N Implies Sn > a in a Convergent Sequence?

    Homework Statement Let Sn be a convergent sequence and the limit of Sn > a. Prove that there exists a number N such that when n > N implies Sn > a Homework Equations sequence definition of limit The Attempt at a Solution This one does not seem to have a point to me. By...
  8. T

    How Do You Verify Trigonometric Identities Involving Negative Angles and Powers?

    i am trying to verify the two identities listed below: cot(-x)cos(-x)+sin(-x)= -csc x i started out as: cos(-x)/sin(-x) cos(x)-sin x, then got it to cos^2 x/sin x - sin x. I thinking i am solving this correctly but I can't figure out the next step to get -csc x. sin^4 x + (2 sin^2...
  9. F

    LaTeX Saving a Figure from Wiki to EPS for Latex

    I would like to insert a figure into Latex. I have taken the figure from wiki and saved it on Paint. How do I save it as an eps file? As it needs to be saved as this type to enable me to insert it in my Latex document. Thankyou
  10. pslarsen

    Analytic equation of elliptic-like figure

    I have to implement the following figure in a programme I am writing but I actually don’t know if there exists an analytical equation describing it. Before I had my problem propagation like a rectangular box, but this might give a better approximation. For your information I am writing a...
  11. J

    Triple Integrals. Need help I cant figure out why 2 integrals arent matching up

    Triple Integrals I am currently taking Calc 3 at college and I ran across a small problem with this one triple integral I am trying to work out (The problem is written as Example 1 in the book work document· So far I have had no luck in finding someone who could help me. If you can't help me...
  12. W

    Definition of Figure of Merit: Explained

    Can anyone help me by explaining exactly what a figure of merit is in words?
  13. J

    What does the symbol ‹[·]› mean in signal and communication systems?

    Hello there! I am in a class of signal and communication systems and found this symbol: ‹[·]› But I can't figure what it means, teacher told us to research it. Been reading books like crazy and can't find anything. Hope you can help me. I put a picture of how he used it, if that helps you.
  14. U

    Momentum. This questions has to be incorrect. Can't figure it out.

    1. A ball weighing 520g is thrown straight up at 6.0m/s a) What is the initial momentum of the ball in N.s 2. p=mv =520g(1kg/1000g)(6.0m/s) =3.12 =3.1 N.s I don't see how this is correct because it takes kg.m.s^2 to create a Newton. There is none here. Then we go on to...
  15. J

    Help me figure the surface area of a partial cone please

    I am trying to measure a concrete structure to compute the surface area. I have included a sketch of the structure with the dimensions that I have measured. This is part of a drainage canal bank where two canals intersect. The banks along both canals are paved with concrete. I tried to...
  16. Z

    Trying to figure out integral with infitnite limites

    Homework Statement \int^{\infty}_{-\infty}(1/(a^{4}+(x-x_{0})^{4}))dx Homework Equations The Attempt at a Solution i let u = (x-x_{0})^{4} but have no idea what to go from there
  17. C

    Calculating Moment of Inertia: A Figure Skater's Finale

    Homework Statement A figure skater during her finale can increase her rotation rate from an initial rate of 1.14 revolutions every 1.86 s to a final rate of 3.13 revolutions per second. If her initial moment of inertia was 4.46 kg*m2, what is her final moment of inertia? Homework...
  18. Amith2006

    Solve Lissajou's Figure Problem with 1:2 Frequency Ratio

    Homework Statement The problem in which I have difficulty has been posted as an attachment. It is based on Lissajou's figure. In the given problem, the ratio of the frequency is 1:2 but nothing has been mentioned about the phase difference. As far as my knowledge goes, the corresponding...
  19. K

    What is the acceleration of each body in the given figure?

    fig link...http://rapidshare.com/files/297246331/P.docx.html What is the acceleration of each body the fig explain ? please help!
  20. H

    Magnetism Question Can't figure it out

    Homework Statement In a certain region, the Earth's magnetic field has a magnitude of 5.5 x 10-5 T and is directed north at an angle of 40° below the horizontal. An electrically charged bullet is fired north and 19° above the horizontal, with a speed of 700 m/s. The magnetic force on the...
  21. R

    Solving the Displacement Problem: Find Magnitude of Total Displacement

    Homework Statement A person walks 21m east and then walks 34m at an angle 47 degrees north of east. What is the magnitude of the total displacement? Homework Equations The Attempt at a Solution I'm not sure how you would go about finding the answer:confused: Help anyone?:-p
  22. I

    Been trying to figure this one out for some time

    LogeX=2loge(100-y^2)+C where X(0)=100 find C. i keep getting different ans, don't know where i am going wrong
  23. Z

    Solving Tension in Block System: Figure 5-57

    Homework Statement Figure 5-57 (link above) shows three blocks attached by cords that loop over frictionless pulleys. Block B lies on a frictionless table; the masses are mA = 6.80 kg, mB = 8.60 kg, and mC = 12.0 kg. When the blocks are released, what is the tension in the cord at the right?
  24. A

    Unravel the Mystery: Can You Figure it Out?

    OK the game is like this. I will tell you a story. And you should figure out what happened by asking questions. I will give yes or no answer (maybe some others) to question. Should be fun. Story: One morning a man was watching TV. In the TV he saw something terrible. He was so shocked and...
  25. R

    Calculating Total Sound Intensity and Combined Sound Level: Ice Show Example"

    Homework Statement A family ice show is held at an enclosed arena. The skaters perform to music with level 80.0 dB. This is too loud for your baby, who yells at 75.0 dB. (a) What total sound intensity engulfs you? (b) What is the combined sound level?Homework Equations dB = 10log(I/1E-12)...
  26. E

    In free-fall acceleration, how do I figure when g is positive or negative?

    In free-fall acceleration, how do I figure when "g" is positive or negative? Homework Statement My textbook is confusing me a bit. In general, when would "g" be positive and when would be negative? I thought it was when the particle was falling downward, it was positive and when it's going...
  27. K

    How to figure out a equation given the variables

    Homework Statement Starting from the constant-acceleration kinematic equations, write a formula that gives vf in terms of t, xi, xf, and a. Homework Equations The Attempt at a Solution I tried using vf = vi + at but it was incorrect. Is there another way where i can solve for vf using the 4...
  28. L

    Circle with diameter X and I twist the circle into a figure eight

    If I had a circle with diameter X and I twist the circle into a figure eight how could I calculate the diameter of one of the resulting approximate circles?
  29. S

    How can i figure the current loss of a power supply?

    OK, so if I'm inputting 120V ac @ 1.5A equals 180W and my output is 19V dc @ 3.16A equals 60.04W simple subtraction says 116W is left. that can't be right can it? am i doing this wrong or am i actually losing 116W of power?
  30. Z

    Airplane and wind speed problem I can't figure out

    Homework Statement Ok, an airplane weighs 6,000 (think of the airplane as a triangle) and one of the back two wheels is stationary and acts as a pivot. The airplane is on the ground. How fast does the wind need to be blowing to push the front wheel 90 degrees from the original location...
  31. E

    LaTeX Inserting a Figure into a Latex Document

    Hello, I want to ask how to include 2 figures at the same page in a Latex document, because when I insert .eps figures from MATLAB, each occpies one page. Regards
  32. P

    Calculating Work on a Box Moving up a Ramp: Physics Problem Help

    Homework Statement n Figure 7-32, a constant force of magnitude 82.0 N is applied to a 3.00 kg shoe box at angle f = 53.0°, causing the box to move up a frictionless ramp at constant speed. How much work is done on the box by when the box has moved through vertical distance h = 0.150 m...
  33. Q

    Need Immediate Help with Journal Figure Submission

    I'm in the middle of submitting a paper to the Journal of Applied Physics. When my figures are converted to pdf, they come out rotated by 90 degrees from what their orientation in the source fiel! Do I need to fix this? If so how? Please respond ASAP!
  34. G

    MATLAB MATLAB plot on an axe on a different figure

    Hi, I have this problem: I have a main file (main.m) in which is coded a for loop (needed for some data-gathering). De data is stored in a vector. This vector is passes to a 2nd figure (test1.m) which has an axe. Here I want to plot the data in a "real-time" mode. I do this with another...
  35. A

    How To Figure Gross With a Certain Net Figure

    May 21, 2009 OK math Guru's, I'm going to give you the question and the answer, what I need from you is the easiest way to GET TO the answer. A chef is attending a big weekend food fair. He is famous for his egg dishes. He knows that he will need 496 eggs for all of the...
  36. P

    Equation Needed to Figure Resulting Kinetic Energy and Velocities from Fusion

    Equation Needed to Figure Resulting Kinetic Energy and Velocities from Fusion... Homework Statement Hey, I am have the initial velocities and masses of nuclei involved in fusion, and am trying to figure out the resulting velocities and kinetic energies. Since this is an inelastic reaction...
  37. M

    Why Does My Calculation of the Limit Differ from My Professor's?

    Homework Statement \lim_{x\rightarrow\infty} \sqrt{e^{2x}+9}-e^x Homework Equations \lim_{x\rightarrow\infty} \sqrt{x} = \infty \lim_{x\rightarrow\infty} e^x = \infty The Attempt at a Solution \lim_{x\rightarrow\infty} \sqrt{e^{2x}+9}-e^x = \lim_{x\rightarrow\infty}...
  38. S

    Can anyone help me figure out how fast a bus was going?

    I don’t know much about physics, but I was recently in an accident and I am trying to figure out approx how fast the other driver was going. What details would I need for the formula? I do know the object weighs 40,000 lbs (speed limit in area was 35, so I know it was going anywhere from...
  39. C

    Find Phase Shift & # Squares to Move Trig Graphs

    Hi i was just wondering if someone could tell me how one can find the phase shift and the number of squares to move the graph over by from an equation?. We are doing cosine and sine graphs and my teacher has been away for a few days so the supply teachers haven't been really that great in...
  40. O

    How to figure the tension on a pole used for a zip line?

    I am looking all over to try and find out how to figure out the tension that would be on each of the poles used for a zip line I am trying to build in my back yard. I would like to build it so that it can support a 300lbs person. I am not very good with math so if someone would be willing to...
  41. C

    Random happenings? (trying to figure out what it was)

    Took physics in 11th grade.. ssoooo many years ago. I remember my teacher showed us this one educational show about this one phenominon or something.. was trying to figure out what it was called.. the 2 examples that i remember in the movie were -If you lined everyone up against a wall...
  42. R

    EE, Node voltages, can't figure out how to reach end result

    hey I'm stumped with a question that deals with finding unknown node voltages as I only know how to complete part of the problem. here is the circuit, sorry for the crude MSPaint I do not have a working scanner here. http://img7.imageshack.us/img7/8730/circuiti.png the answers are v1...
  43. L

    Trying to figure out gravitational attraction between two objects.

    Trying to figure out the gravitational attraction between two objects using Newton's Law of Universal Gravity.Need to figure out what the force is.Here is a model.If anything is in ordinary parentheses then it is an exponent. ----------------------G --------____________|_____________400x300...
  44. B

    MATLAB Question about matlab figure legend.

    Hey folks, I need to save a figure from my MATLAB GUI, which is just a simple plots. Because this plot is the child of a uipanel, so I just use "copyobj" command to copy the handle of the uipanel to the new figure. However, although everything is copied, the legend is not really showing up...
  45. J

    I can't figure out this problem

    I can't figure out this problem! Homework Statement The two wire loops shown below carry current as indicated. Draw 4 arrows representing the magnetic field due to the bottom loop at the top loop. Draw 4 arrows representing the forces on the top current loop due to the magnetic field in...
  46. L

    Discovering the Force on a Mass Attached to a Wire for Beginners

    Hello I'm new here and I don't know if this is the right place but I just got my "electrical engineering" book in the mail and I started to flip through it. It look really interesting and all so I decided to read some of the examples it had I figured most of them out but got to this question and...
  47. P

    Calculating Wavelength of Surface Waves on a Lake

    Homework Statement it's stated that 2.5meters separated a trough and an adjacent crest of surfae wave on a lke. Homework Equations The Attempt at a Solution At first I thought if the trough to th crest is 2.5meters then i would double that to get the wavelenght from crest to...
  48. F

    Cambridge scientists figure out way to make 60yr lightbulb cheaply

    very cool. i wonder if there's a catch: http://www.telegraph.co.uk/earth/earthnews/4375077/Scientists-invent-2-energy-saving-lightbulb-that-last-for-60-years.html
  49. F

    Calculating Impulse: Understanding Force and Acceleration

    Hello... new to the forum and not sure where to post, I see a warning everywhere lol Hope I'm not in the wrong spot. I haven't been in school in well over a decade, but I'm the kind of guy that went out and got math books on my own because I was jonsing to do some math... it's fun for me...
  50. S

    I to figure out how to turn acceleration data into Horsepower/Torque

    I have a vehicle with some known info... weight: 3400lbs Speed at a specific time: see data in chart linked below overall gear ratio: 2.922 Tire size: 25.68 inch Radius RPM at speed: see data in chart linked below heres the data http://spreadsheets.google.com/ccc?key=pxiQyAOYb5vb6jOOMdoQuOg"...
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