A trumpet can be heard with 100 db at 10 m. What is the decibel level...
3. A trumpet creates a sound intensity level of 1.15*102 dB at a distance of 1.00 m. I. What is the sound intensity of a trumpet at this distance? II. What is the sound intensity of five trumpets at this distance? III. Find the sound intensity of five trumpets at the location of the first row of an audience, 8.00 m away, assuming, for simplicity, the sound energy propagates uniformly in all directions. IV. Calculate the decibel level of the...
A trumpet creates a sound intensity level of 52.1 dB at a distance of 3.6 m. What is the sound intensity level (in dB) of 7 such trumpets at a distance of 10.9 m?
On a workday, the average decibel level of a busy street is 72 dB, with 40 cars passing a given point every minute. If the number of cars is reduced to 10 every minute on a weekend, what is the decibel level of the street?
What is the decibel level of a sound that is 1/3 as intense as a 98.0-dB sound?
An opera singer produces a decibel level of 109 dB at a distance of 0.400 m.The area of a typical eardrum is about 5.00 ✕ 10−5 m2.mAssume the sound propagates as a spherical wave. Determine the sound intensity I and power P incident on a typical eardrum at distances of 3.00 m and 21.0 m from the singer. ADDITIONAL PROBLEMS An opera singer produces a decibel level of 109 dB at a distance of 0.400 m. The area of a...
In the afternoon, the decibel level of a busy freeway is 85 dB with 90 cars passing a given point every minute. Late atnight, the traffic flow is only 8 cars per minute. What is the late-night decibel level?
2. The decibel level of a jackhammer is 125 dB relative to the threshold of hearing. Determine the sound intensity produced by the jackhammer
The decibel level of the noise from a jet aircraft is 130 dB when measured 24.8 m from the aircraft. How much sound power does the jet aircraft emit? Answer in units of W. How much sound power would strike the eardrum of an airport worker 24.8 m from the aircraft? Assume the diameter of the worker’s eardrum is 1.7 × 10−2 m. Answer in units of W.
The sound level of a chinchilla's squeak as heard by a dog 6.60 m away is 57.0 dB. (a) At what distance from the chinchilla (in m) is the sound level 70.0 dB? m (b) At what distance from the chinchilla (in m) is the sound level 10.0 dB? m
The decibel scale is a logarithmic scale for measuring the sound intensity level. Because the decibel scale is logarithmic, it changes by an additive constant when the intensity as measured in W/m2 changes by a multiplicative factor. The number of decibels increases by 10 for a factor of 10 increase in intensity. The general formula for the sound intensity level, in decibels, corresponding to intensity I is β=10log(II0)dB, where I0 is a reference intensity. For sound waves, I0 is taken...