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Waves, Sound, and Light: Sound and Music

Sound and Music: Audio Guided Solution

Problem Set SW18, Question 1:

An open-end organ pipe has a length of 0.646 m and a third harmonic frequency of 817 Hz. Calculate the speed of sound in the air of the pipe.
 





 

Audio Guided Solution




Habits of an Effective Problem Solver

  • Read the problem carefully and develop a mental picture of the physical situation. If necessary, sketch a simple diagram of the physical situation to help you visualize it.
  • Identify the known and unknown quantities and record in an organized manner, often times they can be recorded on the diagram itself. Equate given values to the symbols used to represent the corresponding quantity (e.g., v = 12.8 m/s, λ = 4.52 m, f = ???).
  • Use physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
  • Identify the appropriate formula(s) to use.
  • Perform substitutions and algebraic manipulations in order to solve for the unknown quantity.


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