Graph Definition and 999 Threads

  1. R

    Get acceleration from a distance-time graph

    Homework Statement I got a graph with time on the x-axis, and distance on the y-axis. (see attached picture) I have to calculate the acceleration using only the distance - time graph. Homework Equations I used S(t)=S(0) + V(0) * t + .5 * a * t2 The Attempt at a Solution That...
  2. A

    Converting Curved Graph to Linear for Acceleration Calculation

    Homework Statement For my physics coursework I need to convert a curved graph into a linear graph. This will allow me to calculate the acceleration of the object. The experiment was repeated multiple times with the independent variable being the mass of the object. The object was dropped...
  3. C

    MHB Cubic Transformations - Graph shown is best represented by the equation:

    I am confused about using horizontal transformations such as f(x+a) and f(x-a) to interpret these graphs.
  4. S

    Sketch the graph of the wave-function.

    Homework Statement I am given the graph of the potential of a particle, and the particle is in its ground state. I must make the graph of the wave-function with respect to x. (A) Sketch psi(x) for this particle. (B) You make a measurement to find the particle. Indicate on your graph...
  5. jdawg

    Exponential Graph: Is Square Root an Exponential?

    Homework Statement Is a function that has a square root an exponential graph since you can rewrite a square root as x^1/2? Homework Equations The Attempt at a Solution
  6. N

    The graph of the function is given; Draw the graph of f'

    Homework Statement The graph of the function f is given, Draw the graph of f' The graph looks like that of a parabola extending continuously upwards to the left and the right. Homework Equations lim f(x+ delta(x)) - f(x) delta x -> 0...
  7. A

    MHB Chromatic number of a graph embedded on torus

    if the graph G can be embedded on a torus can we say: if χ(G)≥r⇒Kr≺G. Kr is a minor of G?(Kr is the complete graph with r vertices).
  8. B

    Why Is the Correct Reflection of y=e^x About y=2 Given by y=4-e^x?

    Homework Statement Consider the graph y = e^x Homework Equations Make an equation that results in reflecting about the line y = 2 The Attempt at a Solution I came up with 2 - e^x And when I put it in my calculator it makes sense. Just -e^x is reflected among y = 0 so if you...
  9. adjacent

    Is the median from a cumulative frequency graph accurate?

    Homework Statement Height- 1-10| 10-20 |30-50 |50-60 Frequency 2 |5| 7| 9 Cumulative frequency-2 7 14 18 So this is a Group frequency table. Is the median obtained from Cumulative frequency graph 100% accurate?Or is it just an assumption? Homework...
  10. 9

    Graph {(x, y) ∈ R+² : X ≥ X’ >0, Y ≥ Y’ > 0}

    Homework Statement The consumption set of a consumer is: {(x, y) ∈ R+² : X ≥ X’ >0, Y ≥ Y’ > 0}. Graph it. I am only wondering how it looks, don't need a copy of the graph. Homework Equations {(x, y) ∈ R+² : X ≥ X’ >0, Y ≥ Y’ > 0} The Attempt at a Solution This first part, (x, y) ∈ R+²...
  11. estro

    Can a graph with no self loops and odd common neighbors have an Eulerian path?

    I'm trying to prove that a graph with the below properties has an eulerian path. 1. Graph has no self loops or parallel edges. 2. Every two different vertices u and v have an odd number of common neighbor vertices. I'm thinking about this problem for a whole day and can't manage to prove...
  12. Ascendant78

    Potential energy vs position graph w/ total mech. energy?

    Ok, I've been trying to soak up the MIT physics material, but I am stuck on something and it is driving me crazy. They have several questions about graphs of potential energy vs. position, which also includes the total mechanical energy. I just can't fully wrap my mind around these graphs and...
  13. L

    Graph States for Quantum Secret Sharing

    In Graph States for Quantum Secret Sharing on page 3 : I understand that $$\mathop \otimes \limits_i Z_i^{{l_{i2}}} = Z_1^{{l_{12}}} \otimes Z_2^{{l_{22}}} \otimes Z_3^{{l_{32}}}$$ But I don’t understand why $$\left| G \right\rangle = \left( {\frac{{\left| {0 + + } \right\rangle +...
  14. H

    What Causes Peaks in Reflectance Graph of Polished Silicon Wafer?

    Hi all When one measures the reflectance of say silicon, certain peaks appear in the graph. I am wondering, if anyone can explain the location of the peaks and their meaning. Here the graph is, I hope the picture thing works, else here is the link. The graph is for a polished...
  15. X

    How is the slope of a voltage vs time graph the current?

    A lot of websites say that if you take the slope of a voltage vs time graph, you get the current. However, the math tells a different story. where V = voltage, J = joules, C = coulombs, A = amperes, s = seconds A = C / s C = A * s V = J / C J = C / V if we take the slope of Voltage...
  16. K

    Understanding Kinematics Graph Analysis

    Homework Statement Here is the question.. Figure P2.35 (A link to the image is posted) represents part of the performance data of a car owned by a proud physics student. (a) Calculate the total distance traveled by computing the area under the red-brown graph line. (b) What distance does the...
  17. L

    How Can You Prove the Voltage-Time Relationship Using Logarithms and Graphs?

    Homework Statement It is thought that the law relating the voltage (v) across an inductor and the time(t0) in milliseconds (ms) is given by the relationship v=Ae^(t/B). Where “A” and “b” are constants and “e” is the exponential function. The results of the experimentation are below: V...
  18. J

    How can the band-gap structure be determined using the E-k graph?

    Hi all, If you are given the real space lattice vectors (14 Angstroms in the x-direction and 8 Angstroms wit an angle of 91 degrees between them) and have to draw the reciprocal lattice and the the first Brillouin zone, and then using this data sketch the E-k graph and comment on the band-gap...
  19. B

    Analysing graph of a logarithmic function

    Hello everyone! I'm stuck on a small detail in a math task, and would really appreciate some help! Homework Statement Determine all local extreme points and possible max/min values for the function f(x) = x*lnx+(x*lnx)^2 where 0<x≤1/2 Homework Equations The Attempt at a...
  20. S

    Interpreting a graph of lab data.

    So, I've obtained a graph of lab data an it's a plot of thermal resistance versus pressure. Pressure on the x and thermal resistance on the y. If I plot all the points, there doesn't seem to be any trend. The y values are just as likely to decrease as they are to increase with increasing x...
  21. S

    MHB Consider the graph of y = g(x) given.

    Find g(-1) = So wouldn't g(-1) = Does not exist since the point is discontinuous or would it be 1.5? I'm confused. I feel like it doesn't exist. Can someone elaborate? - - - Updated - - - because g(2) = Does not exist, because it is discontinuous, so g(-1) has to be Does not exist right??
  22. A

    Moment of inertia lab graph reading assistance

    The problem I am currently trying to right a lab report on a experiment trying to find a flywheels moment of inertia. In the lab we had a fly wheel connected to a mass on a string, and measured the position of a point on the wheel as the mass was accelerating downwards. The data was analysed...
  23. R

    How to graph equipotential lines of two charges?

    The two charges are (-q) and q. I'm just curious as to how you go about graphing them. Thanks!
  24. C

    Write rational function equation given graph

    On The graph, the following information was given: Point of discontinuity( -2,0) and (1,-3) X intercept at ( 2,0) Yintercept (0,-4) This is what I had : (x+2)(x-2)(x-1)/ (x+2)(x-1) But the answer is that u have to put (x+2)^2 in the numerator instead of what I had. But I thought...
  25. AdrianHudson

    What causes alternating patterns in the graph of tan(x)/cos(x)?

    I just recently discovered for myself this weird graph, can anyone explain to me what is exactly happening here. I realize there are a couple asymptotes but I am confused on when when y<0 the "legs" of the graph converge on another asymptote it looks like the tan(x) is just repeated but flipped...
  26. J

    MATLAB Analyzing Franck Hertz Graph on Excel/Matlab

    Hello, How can I determine when the current is starting rise? What methods should I use to do so? on excel or matlab. I've attached an image of my graph below Thanks a million
  27. M

    Work done is the area under a voltage against charge graph

    Homework Statement Homework Equations Area of a triangle is 0.5 × b × h ΔW=VΔQ The Attempt at a Solution I drew a straight line graph from the origin with end point 4.5V 9.0 microF energy is a work done = .5QV There is a mark in the mark scheme for ΔW=VΔQ explained...
  28. M

    Graphing Quadratic Functions: How to Find Critical Points and Inflection Points

    Homework Statement I've been looking at the problem for a while and I just can't figure it out. It is graph sketching. y=x2(x2-4)2 the correct equation is this: y=x2(x-4)2Homework Equations Solve for critical points, and inflection points in order to get points needed to graph function. The...
  29. M

    How to Determine g from Centripetal Acceleration Graph?

    Mg=[1600∏2m(L+a)(1/t2)]- b M is the mass of the slotted weight g is the gravitational force m is the mass of the sticky tape L is the length of the nylon thread measured from the end of the plastic tube to the sticky tape t is the time for 20 revolutions of the sticky tape a and b are...
  30. Superposed_Cat

    MATLAB MATLAB-Plot two sets of data on the same graph with custom increments

    Hi, I was trying to plot two sets of data on the same graph and this was my solution but this generates a graph with the x-axis in 0.5 increments where I wanted 1. How do I plot two sets of data on the same graph and customize the increments. Thanks in advance. Also, how would I make MATLAB...
  31. S

    Graphing the Curl of -Cx\vec{z} on the xz plane

    I posted the divergence of this earlier but thought I should post the curl separately. Homework Statement Find the curl of ##E=-Cx\hat{z}## Homework Equations...
  32. adjacent

    Deriving the formula from a graph

    So,here we have a graph.For every unit of 1(x axis),the unit of the previous y-axis is multiplied. Like this. (0,2),(1,4),(2,8),(3,16)... I don't know how the formula will be,and had never seen this kind of graph. The y seems to be a geometric sequence,on which we can use, ## ar(n-1) ## .r is...
  33. C

    How to derive an equation from a graph

    Homework Statement Hello! I have two graphs which I need to find if there is relationship between them (all in one). I have to create a formula/equation that can show and prove that there is this relationship between them.I am really confused at the moment since I do not know if there is...
  34. M

    I don't understand how to get the temperature from this graph?

    This is an experiment on plasma control. A graph of current against voltage is drawn on a semi log paper. From this graph, we can get the electron temperature (measured in eV). The method is shown in this picture, but I don't understand it at all. Can someone please explain it to me?
  35. D

    How do I plot a log log graph using this equations?

    (HgAh)=ChG^mL^n (HdAm)=CmG^pL^q I need to plot (HgAh) and (HdAm) As Fuction of G( Gas flow rate) with lines of Constant L( Liquid flow rate) and discern M and P from the equations above from Log Log Graphs. I have collected a table of raw data with Various G at constant L. How do I...
  36. S

    LaTeX Adding an excel graph into a LaTeX pdf.

    How do I go about doing this? I'd like the graph to be fitted to the size of the page (A4) also, not just stuck on at the end in full size.
  37. D

    What Does the Potential Energy Equation U(x) Tell Us About Motion and Forces?

    [solved] graph of potential energy Homework Statement A mass of 5 kg follows the potential energy shown by the equation: U(x) = .333(x-4)^3 - \dfrac{x^2}{4} + 5 1. Find the force on the mass at x=2 2. Describe the motion qualitatively if the mass is placed at x=4 m and released 3...
  38. O

    Graph Theory - Max. Independent set algorithm

    Graph Theory -- Max. Independent set algorithm Homework Statement Design a polynomial time greedy algorithm to compute a maximum independent set for a graph. Explain the algorithm and compute T_w(n). Homework Equations The Attempt at a Solution My terse and informal...
  39. A

    Interesting graph theory problem

    I have the following problem, suppose we have a graph G of n elements, with the property that if we add one missing vertex v, we will get a complete subgraph with s elements K_s of G, in which v belongs to G'. In other words every subgraph of s elements of G is almost a complete graph except for...
  40. R

    MHB Proving a graph is planar/nonplanar

    I was given a rather complicated graph as a homework problem, and told to see if it is planar or not. It satisfies the equation e\leq 3v-6 and has a chromatic number of 4 as well as vertices of degree 5 or below, so there's nothing to rule out planarity there. There are at least 5 vertices of...
  41. C

    Velocity Vs. Time Graph Extension Help

    [b]1. The problem statement So I am currently working on an velocity/acceleration lab. My physics teacher requires each lab group to find an extension that goes above and beyond the question that we are supposed to answer with the lab. Each group also needs evidence to prove the extension...
  42. M

    Field strength is the potential gradient graph question

    Homework Statement By use of the graph in part (a), calculate the gravitational field strength at a distance 2R from the centre of the Earth. Homework Equations g = delta V / Delta r filed strength is the potential gradient The Attempt at a Solution I have drawn the...
  43. SpaceKidd_N7

    Don't understand the graph of y^2=x^2

    Hi, I don't really understand the graph of y2=x2. When I plot it in wolfram alpha, I get a plot that looks like an x or two diagonal intersecting lines that go through the origin. I can understand why there are points in the first, second, and fourth quadrants, but I am confused as to why...
  44. marcus

    Graph samples space/Fock overlay of self-loops

    If you've followed loop-gravity research since 2011 you know there've been big changes in the past couple of years--one being the emergence of the spinor network formulation. Livine, Wieland, Speziale are some of those involved. I see Etera Livine is a visiting fellow at Perimeter as well as...
  45. K

    Helium: Graph of Root Mean Velocity vs Temperature

    I'm looking for a graph that shows me the root mean velocity as a function of temperature for helium gas. Does anyone know where I can find this? Thanks.
  46. L

    Interpretation of an impulse graph

    Which of the following is true if the mass is at rest at t=0 ? A. Velocity of the mass is decreasing btwn 10 and 20 seconds. B. The accel. of the mass is constant between 0 and 10 seconds C. At 40 seconds the mass is stationary. D. The distance trsveled by the mass bten 0 and 10 seconds is...
  47. S

    Ploting graph with gnuplot: manually determine x axis

    Hi there, It's the first time I am using gnuplot to plot a graph and I watched all sorts of tutorials and advices on google but I just can't find a good solution! Let me try to explain what the problem is... The experiment: I have a microphone and a speaker in closed box. The speaker is...
  48. I

    Why isn't MATLAB producing graphs for my program?

    Homework Statement Hello there. I ran a MATLAB program and i can't produce any graph. Please help me Homework Equations This are the program L = 1.; T = 1.; maxk = 2500; dt = T/maxk; n=50; dx = L/n; cond = 1/4; b = 2.*cond*dt/(dx*dx); for i= 1:n+1 x(i) = (i-1)*dx; U(i,1) =...
  49. C

    Calculating Area Between Curves Using Integration?

    Homework Statement Please refer to the image attached. Part (ii) Homework Equations NoneThe Attempt at a Solution My workings are in the second image. I don't understand why is it wrong. Since the graph is well below the x-axis, if I integrate it do I get infinity? (The x-coordinates of P...
  50. C

    Analysis of collision of particles from graph

    Hi friends, I have an issue in Analysis of collision of particles from graph. Please Help me in solving this. Thank you all in advance. The problem is as: https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-ash4/q71/s720x720/1381762_1432382976988808_995987085_n.jpg Attempt...
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