A child has an ear canal that is 1.3 cm long. At what sound frequencies in the audible range will the child have increased hearing sensitivity?
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- A bat is using echolocation to find insects at night. If the bat emits a high frequency chirp and hears an echo 0.031 s later, how far away is the insect? The temperature of the air that night is 24°C.A sound has an intensity of 0.0000027 Watts per square meter. What is this sound's decibel level?A typical eardrum is 8.9mm in diameter. You have a speaker that can produce 280W of sound energy. The speaker radiates sound in all directions. How much sound energy is incident on the eardrum in 1s. a) at the threshold of hearing (0dB)? b) at the threshold of pain (120dB)? c) how far away from the speaker is your eardrum if you experience pain from the sound? I am unable to solve this! Some help would be great,
- A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 5.83 104 Hz, and if the speed of sound in air is 343 m/s, what is the smallest insect a bat can detect?mmThe following five problems should be calculated on paper, scanned or photographed, and submitted for credit. Convert the following sound pressures to sound pressure levels: p = 20 Pa p = 1 Pa p = 2 x 10-5 Pa Convert the following sound pressure levels to sound pressure: Lp = 80 dB Lp = 15 dBA bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 5.89 104 Hz, and if the speed of sound in air is 343 m/s, what is the smallest insect a bat can detect?mm
- Resonances of the ear canal lead to increased sensitivity of hearing, as we've seen. Dogs have a much longer ear canal-5.2 cm-than humans. What are the two lowest frequencies at which dogs have an increase in sensitivity? The speed of sound in the warm air of the ear is 350 m/s. A 1700 Hz, 3400 Hz B. 1700Hz, 5100Hz C. 3400 Hz, 6800 Hz D. 3400 Hz, 1 0,200 Hz12 gives the loudness of sound L (in dB) based on the intensity of sound I (in W/m²). The value I = 10 The formula L=10 log threshold for hearing for midfrequency sounds. Hearing impairment is often measured according to the minimal sound level (in dB) detected by an individual for sounds at various frequencies. For one frequency, the table depicts the level of hearing impairment. Category Mild Moderate Moderately severe Severe Profound Loudness (dB) 26≤L≤40 41≤L≤55 56≤L≤70 71 ≤L≤90 L>90 W/m is the minimal (a) If the minimum intensity heard by an individual is 9421.4 x 108 W/m², determine if the individual has a hearing impairment. Round to the nearest tenth. (b) If the minimum loudness of sound detected by an individual is 40 dB, determine the corresponding intensity of sound.Chapter 16, Problem 069 Your answer is partially correct. Try again. ES. lem The bellow of a territorial bull hippopotamus is measured at 116 dB above the threshold of hearing. What is the sound intensity? Hint: The threshold of human hearing is Io = 1.00 x 10-12 W/m2. plem %3D blem Number Units W/m^2 ▼ oblem the tolerance is +/-5% oblem roblem SHOW HINT Problem LINK TO TEXT Problem Problem By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Problem Question Attempts: 1 of 6 used SUBMIT ANSWER SAVE FOR LATER Problem Earn Maximum Points available only if you 8:02 PM 4/29/2020 19 e here to search 21 ASL pause break prt sc sysrq f11 f12 insert f8 f9 f10 f4 f5 f6 f7 f2 f3 backspace & %24 80 4 96
- A threshold of hearing has an intensity of 10- 12 W/m^2 (a sound level of 0Db). how much more intense than the threshold of hearing is a sound of 10 DB? The threshold of hearing has an intensity of 10^-12 w/m^2 how much more intense than the threshold of hearing is a sound of 40db?A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 7.69 104 Hz, and if the speed of sound in air is 343 m/s, what is the smallest insect a bat can detect? ?mmHuman hearing is most sensitive around 2500Hz. If the speed is 340 m/s what is the wavelength of this sound?