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

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SUMMARY

The discussion focuses on expressing the wavelength equation, specifically l = (k/f)*(T/u)^0.5, in a linear form to determine the constant k from the slope of a graph. The equation can be rearranged to k^2 = [(f^2)*(u)] * [(l^2)/T], allowing for the identification of slope (m) and intercept (b) in the linear equation y = mx + b. The variables (l^2)/T and (f^2)*u are established as the x and y coordinates, respectively, for plotting the graph.

PREREQUISITES
  • Understanding of linear equations and graphing principles.
  • Familiarity with the concepts of wavelength and frequency.
  • Knowledge of the physical parameters involved: tension (T), mass per unit length (u), and frequency (f).
  • Ability to manipulate algebraic equations to isolate variables.
NEXT STEPS
  • Research how to derive linear equations from quadratic relationships in physics.
  • Learn about graphing techniques for experimental data analysis.
  • Explore the relationship between slope and physical constants in wave mechanics.
  • Study the implications of dimensional analysis in physics equations.
USEFUL FOR

Students and educators in physics, particularly those focusing on wave mechanics and experimental data analysis, will benefit from this discussion.

General_Sax
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Homework Statement


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.

Homework Equations


l = lambda

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





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
 
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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.
 
lol, good point. I'll get back to you.
 

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