Waves, Sound, and Light: Sound and Music
Sound and Music: Audio Guided Solution
Problem Set SW22, Question 3:
A physics student is doing a resonance tube lab. She notices that resonance is observed for the first harmonic when the length of the closed-end air column is 21.9 cm. Determine the third harmonic frequency (in Hertz) for this air column. (Assume a speed of sound in air of 343 m/s.)
Audio Guided Solution
Habits of an Effective Problem Solver
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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.
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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 = ???).
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Use physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
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Identify the appropriate formula(s) to use.
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Perform substitutions and algebraic manipulations in order to solve for the unknown quantity.
Read About It!
Get more information on the topic of Sound and Music at The Physics Classroom Tutorial.