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Problem

Assuming that the maximum displacement of the air…
06:51

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Problem 107 Hard Difficulty

A dramatic demonstration, called singing rods, involves a long, slender aluminum rod held in the hand near the rod's midpoint. The rod is stroked with the other hand. With a little practice, the rod can be made to sing, or emit a clear, loud, ringing sound. For a $75-\mathrm{cm}$ -cm-long rod, $(a)$ what is
the fundamental frequency of the sound? (b) What is its wavelength in the rod, and (c) what is the wavelength of the sound in air at $20^{\circ} \mathrm{C}$ ?

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Related Courses

Physics 101 Mechanics
Physics for Scientists and Engineers with Modern Physics

Chapter 16

Sound

Related Topics

Periodic Motion

Mechanical Waves

Sound and Hearing

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Top Physics 101 Mechanics Educators
Elyse Gonzalez

Cornell University

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Lectures

Video Thumbnail

08:15
Sound and Light - Overview

In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain. Humans can only hear sound waves as distinct pitches when the frequency lies between about 20 Hz and 20 kHz. Sound above 20 kHz is known as ultrasound and has different physical properties from sound below 20 kHz. Sound waves below 20 Hz are called infrasound. Different species have different hearing ranges. In terms of frequency, the range of ultrasound, infrasound and other upper limits is called the ultrasound.
Video Thumbnail

04:49
Traveling Waves - Intro

In physics, a traveling wave is a wave that propogates without a constant shape, but rather one that changes shape as it moves. In other words, its shape changes as a function of time.
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Watch More Solved Questions in Chapter 16

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Problem 109

Video Transcript

in part, they were asked to find a fundamental frequency off the road. Fundamental frequency off road. His written days sound the speed off the wheel or the lambda. Ah, Lambda is the prevalent. When there we have a residence, Waveland. Then the lambda is equal to twice the length off the road. So, um, the speed is 51 00 looking in table for l'm union, then, um, the length is to well is 1.5, Then the our fundamental frequency will be 34 Double zero hurts 3400 hards herds in part B. Um, we were asked to find the length off road, which we already found it here, actually, which is Ah, the Lambda. Sorry, the Lambda off the sound in the road. So the lambda we already found here, which is a call to well, that is equal to, um 1.5 1.5 meters in part C were asked to find the Lambda. And there's leme Dine. There will be the last t off a sound in the air or the frequency we got that is equal to the tree for zero 343 story over the frequency, which is a 3400 hertz 400 yards. And this gives us the Lambda in air is 0.14 meters. End off the problem. Thank you for watching.

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Related Topics

Periodic Motion

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Top Physics 101 Mechanics Educators
Elyse Gonzalez

Cornell University

Christina Krawiec

Rutgers, The State University of New Jersey

Farnaz Mohseni

Simon Fraser University

Zachary Mitchell

Hope College

Physics 101 Mechanics Courses

Lectures

Video Thumbnail

08:15
Sound and Light - Overview

In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain. Humans can only hear sound waves as distinct pitches when the frequency lies between about 20 Hz and 20 kHz. Sound above 20 kHz is known as ultrasound and has different physical properties from sound below 20 kHz. Sound waves below 20 Hz are called infrasound. Different species have different hearing ranges. In terms of frequency, the range of ultrasound, infrasound and other upper limits is called the ultrasound.
Video Thumbnail

04:49
Traveling Waves - Intro

In physics, a traveling wave is a wave that propogates without a constant shape, but rather one that changes shape as it moves. In other words, its shape changes as a function of time.
Join Course
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A dramatic demonstration, called "singing rods," involves a long, slender alumi…

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An aluminum rod 1.60 $\mathrm{m}$ long is held at its center. It is stroked wit…

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An aluminum rod $1.60 \mathrm{~m}$ in length is held at its center. It is strok…

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