College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Textbook Question
Chapter 17, Problem 54PE
What frequencies will a 1.80-m—long tube produce in the audible range at 20.0°C if: (a) The tube is closed at one end? (b) It is open at both end?
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What frequencies will a 1.80-m-long tube produce in the audible range at 20.0C if: (a) The tube is closed at one end? (b) It is open at both ends?
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(a) What is the length of the pipe? m(b) What is the fundamental frequency at a temperature of 30°C? Hz
Chapter 17 Solutions
College Physics
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- A pipe is observed to have a fundamental frequency of 345 Hz. Assume the pipe is filled with air (v = 343 m/s). What is the length of the pipe if the pipe is a. closed at one end and b. open at both ends?arrow_forwardA 512-Hz tuning fork is struck and placed next to a tube with a movable piston, creating a tube with a variable length. The piston is slid down the pipe and resonance is reached when the piston is 115.50 cm from the open end. The next resonance is reached when the piston is 82.50 cm from the open end. (a) What is the speed of sound in the tube? (b) How far from the open end will the piston cause the next mode of resonance?arrow_forwardAn 8-hour exposure to a sound intensity level of 90.0 dB may cause hearing damage. What energy in joules falls on a 0.800-cm-diameter eardrum so exposed?arrow_forward
- What frequency is received by a mouse just before being dispatched by a hawk flying at it at 25.0 m/s and emitting a screech of frequency 3500 Hz? Take the speed of sound to be 331 m/s.arrow_forwardA sound wave in air has a pressure amplitude equal to 4.00 103 Pa. Calculate the displacement amplitude of the wave at a frequency of 10.0 kHz.arrow_forwardThe area of a typical eardrum is about 5.00 X 10-5 m2. (a) (Calculate the average sound power incident on an eardrum at the threshold of pain, which corresponds to an intensity of 1.00 W/m2. (b) How much energy is transferred to the eardrum exposed to this sound lor 1.00 mill?arrow_forward
- A sound wave of a frequency of 2.00 kHz is produced by a string oscillating in the n=6 mode. The linear mass density of the string is =0.0065 kg/m and the length of the string is 1.50 m. What is the tension in the string?arrow_forwardOrgan pipes can be designed as open or closed tubes. What is the frequency of the fundamental and the next two harmonics for a 26-cm-long organ pipe at 20°C if it is (a) open and (b) closed? The speed of soundat this temperature is ≈ 340 m/s.arrow_forwardA pipe open at both ends has a fundamental frequency of 300 Hz when the temperature is 0°C. (a) What is the length of the pipe? (b) What is the fundamental frequency at a temperature of 30.0°C?arrow_forward
- A crude approximation of voice production is to consider the breathing passages and mouth to be a resonating tube closed at one end. (a) What is the fundamental frequency if the tube is 0.240 m long, by taking air temperature to be 37.0°C ? (b) What would this frequency become if the person replaced the air with helium? Assume the same temperature dependence for helium as for air.arrow_forwardA crude approximation of voice production is to consider the breathing passages and mouth to be a resonating tube closed at one end. (a) What is the fundamental frequency if the tube is 0.240-m long, by taking air temperature to be 37.0ºC ?(b) What would this frequency become if the person replaced the air with helium? Assume the same temperature dependence for helium as for air.arrow_forwardCalculate the first overtone in an ear canal, which resonates like a 2.30 cm long tube closed at one end, where the air temperature is 37.0° C. first overtone:arrow_forward
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