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Homework Help: Expressing a wavelength equation in linear form; k must be determined via slope

  1. Oct 8, 2009 #1
    1. The problem statement, all variables and given/known data
    How should the variables ( l and T) be plotted to obtain k from the slope of a linear graph? Identify (write out) the constants correstponding to the slope and intercept of the linear graph.

    2. Relevant equations
    l = lambda

    l = (k/f)*(T/u)^0.5

    3. The attempt at a solution

    k^2 = [ (f^2)*(u) ] * [ (l^2)/T ]

    (l^2)/T = x

    (f^2)* u = m

    K^2 = mx + 0

    b = 0
  2. jcsd
  3. Oct 9, 2009 #2


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    Gold Member

    For a plot you need pairs of points (x, y). So what are you going to plot on the x-axis and what on the y-axis? A straight line is of the form y = mx + b. What is your y? It can't be k2 because you don't know what it is.
  4. Oct 9, 2009 #3
    lol, good point. I'll get back to you.
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