appreciate the human ear’s twelve order of magnitude (10^12) span from barely audible to the pain threshold, consider the following. Suppose an equivalently dynamic instrument were designed to measure distances. Taking the lower limit of the instrument to be 1.00 mm, what would be the largest distance measurable? (b) To provide a perspective for the human ear’s frequency sensitivity range (audible frequency extremes differ by 10^3 ), consider a speedometer with a similar speed range. If the speedometer’s maximum speed reading is 90.0 mi/h, what is the smallest finite speed that it could register?

appreciate the human ear’s twelve order of magnitude (10^12) span from barely audible to the pain threshold, consider the following. Suppose an equivalently dynamic instrument were designed to measure distances. Taking the lower limit of the instrument to be 1.00 mm, what would be the largest distance measurable? (b) To provide a perspective for the human ear’s frequency sensitivity range (audible frequency extremes differ by 10^3 ), consider a speedometer with a similar speed range. If the speedometer’s maximum speed reading is 90.0 mi/h, what is the smallest finite speed that it could register?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter17: Sound

Section: Chapter Questions

Problem 81P: Calculate the first overtone in an ear canal, which resonates like a 2.40-cm-long tube closed at one...

See similar textbooks

Similar questions

In audio and communications systems, the gain, ?, in decibels is definedfor an amplifier as? = 10 ????!"#?!"where Pin is the power input to the system and Pout is the power output.(a) A particular amplifier puts out 135 W of power for an input of 1.0 mW.What is its gain in dB? (b) If a signal-to-noise ratio of 93 dB is specified,what is the noise power if the output signal is 10 W?
Calculate the first overtone in an ear canal, which resonates like a 2.40-cm-long tube closed at one end, by taking air temperature to be 37.0°C . Is the ear particularly sensitive to such a frequency? (The resonances of the ear canal are complicated by its nonuniform shape, which we shall ignore.)
An exposure taken at 40 inches yields an intensity of 200 mR. Assuming all other factors remain constant, what is the intensity if the distance is increased to 80 inches?
For a Symmetrical Slab AlGaAs Waveguide, calculate the number of Modes that will propagate if the Wavelength is 870 nm and the Thickness is 8.5 um.
A fish finder uses a sonar device that sends 20,000-Hzsound pulses downward from the bottom of the boat, andthen detects echoes. If the maximum depth for which it isdesigned to work is 85 m, what is the minimum time betweenpulses (in fresh water)?
Calculate the first overtone in an ear canal, which resonates like a 2.40-cm-long tube closed at one end, by taking air temperature to be 37.0ºC . Is the ear particularly sensitive to such a frequency? (The resonances of the earcanal are complicated by its nonuniform shape, which we shall ignore.)
What is the minimum power required for a loudspeaker to produce 109 dB sound at a distance of 10.9 m in any direction?
Supose the frequencies u ear can respond range over a factor of 103, from around 20 Hz to 20 kHz. Suppose the speedometer measured speeds differing by the same factor of 103, and the greatest speed it reads is 90.0 mph . What is the slowest nonzero speed it could read, in mi/h?
What is the linear attenuation coefficient of each metal in dBm at a given thickness, 0.5 mm? Aluminum? Iron? Lead?
The human ear can respond to an extremely large range of intensities - the quietest sound the ear can hear is smaller than 10-20 times the threshold which causes damage after brief exposure. If you could measure distances over the same range with a single instrument, and the smallest distance you could measure was 1 mm, what would the largest be, in kilometers?
Loudness (L), in decibles (dB), of a sound of intensity I is defined to be L=10log( I/I0), where I0=10-12(W/M2) (watts per meter square) is the minimum intensity detectable by the human ear. A.) Find the loudness L, in decibles (dB), of a trombone given the intensity is 1010I0 B.) Find the intensity of a rock concert whose loudness is 115 decibles. C.) What is the NIOSH recommended Exposure Limit (REL) given in dB based on exposures at work 5 days per week?
At a rock concert, a 10 kW speaker is located on one side corner of the stage. If 2% ofthe speaker power is converted to sound, how close could you get to the speaker beforethe sound level would exceed the pain threshold of 120 dB?