Question

In: Physics

Three people talk simultaneously. If the intensity level is 92 dB when either one speaks alone,...

Three people talk simultaneously. If the intensity level is 92 dB when either one speaks alone, what is the intensity level when both speak at once?

Solutions

Expert Solution

This problem can be solved using the standard definition of intensity of sound in decibel scale and then using the fact that the intensity in watts/m adds together when both of them speak at once. The intensity level when both speak at once is 95.01 dB. Detailed solution given below. If you have any doubt, ask me in the comment. Feedback will be helpful.

genius_generous answered 3 months ago
Next > < Previous

Related Solutions

Determine the intensity of a 120-dB sound. The intensity of the reference level required to determine...
Determine the intensity of a 120-dB sound. The intensity of the reference level required to determine the sound level is 1.0
A sound wave with an intensity level of 80.6 dB is incident on an eardrum of...
A sound wave with an intensity level of 80.6 dB is incident on an eardrum of area 0.600 ✕ 10-4 m2. How much energy is absorbed by the eardrum in 4.0 minutes? µJ? A source of sound waves of frequency 1.2 kHz is traveling through the air at 0.55 times the speed of sound. (a) Find the frequency of the sound received by a stationary observer if the source moves toward her. Hz (b) Repeat if the source moves away...
A trumpet creates a sound intensity level of 1.05  102 dB at a distance of 0.80 m....
A trumpet creates a sound intensity level of 1.05  102 dB at a distance of 0.80 m. (a) What is the sound intensity of a trumpet at this distance? W/m2 (b) What is the sound intensity of five trumpets at this distance? W/m2 (c) Find the sound intensity of five trumpets at the location of the first row of an audience, 7.60 m away, assuming, for simplicity, the sound energy propagates uniformly in all directions. W/m2 (d) Calculate the decibel level...
If 300 m away from an ambulance siren the sound intensity level is 65 dB, what...
If 300 m away from an ambulance siren the sound intensity level is 65 dB, what is the sound intensity level 30 m away from that ambulance siren? Specify your answer in units of decibel (dB).
At a particular location in your house, three appliances make sound intensity levels of 73.2 dB,...
At a particular location in your house, three appliances make sound intensity levels of 73.2 dB, 76.1 dB, and 69.2 dB individually. What is the sound intensity level at that location when they are all running at the same time?
find the critical value Z α/2 when the confidence level is 92%.
find the critical value Z α/2 when the confidence level is 92%.
Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with...
Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with a force of 71.3 N, Jill pulls with 86.1 N in a direction 45° to the left, and Jane pulls in a direction 45° to the right with 127 N. (Since the donkey is involved with such uncoordinated people, who can blame it for being stubborn?) Find the magnitude of the net force the people exert on the donkey. What is the direction of...
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 76.9...
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 76.9 N, Jill pulls with 70.9 N in the northeast direction, and Jane pulls to the southeast with 163 N. (Since the donkey is involved with such uncoordinated people, who can blame it for being stubborn?) Find the magnitude of the net force the people exert on the donkey.
The length of a confidence interval changes when either the confidence level changes or the sample...
The length of a confidence interval changes when either the confidence level changes or the sample size changes. To illustrate this, imagine a statistician takes a sample from a population with a population standard deviation of 2. The sample mean is calculated to be 10. Construct 3 different confidence intervals: 3a) Assume the sample size is 30 and the confidence level is 95% 3b) Assume the sample size is 30 and the confidence level is 90% 3c) Assume the sample...
The length of a confidence interval changes when either the confidence level changes or the sample...
The length of a confidence interval changes when either the confidence level changes or the sample size changes. To illustrate this, imagine a statistician takes a sample from a population with a population standard deviation of 2. The sample mean is calculated to be 10. Construct 3 different confidence intervals: 3a) Assume the sample size is 30 and the confidence level is 95% 3b) Assume the sample size is 30 and the confidence level is 90% 3c) Assume the sample...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT