To Demonstrate Interference of Sound Waves,a Buzzer Is Placed in the Center

question 12

Short Answer

To demonstrate interference of sound waves,a buzzer is placed in the center of an empty mailing tube that is 0.80 m long.The sound waves emerge from the two ends of the tube in phase and interfere with each other in the region surrounding the tube.When you stand 4.0 m directly in front of the tube,equidistant from its two ends,you hear a loud sound.If you then move parallel to the tube a distance of 1.3 m,the sound nearly disappears.
(a)What's the wavelength of the buzzer's sound waves?
(b)What's the buzzer's frequency? (Assume the speed of sound in air is 340 m/s. )

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Definitions:

ε-Caprolactam

A cyclic amide or lactam, used as a monomer in the production of Nylon 6 through ring-opening polymerization.

Nylon 6

A type of polyamide or nylon made from a single monomer, caprolactam, characterized by its long, repetitive chains, used in textile and plastic industries.

Polymer

Large molecules composed of repeating structural units known as monomers, bonded together via chemical reactions.

Reaction

A process in which substances (reactants) interact to form new substances (products) with different chemical and physical properties.