5. A sound source has an intensity I1 and when its sound level is measured at a fixed distance the found value is 70 dB. The source increases its intensity to I2 and when its sound level is measured at the same distance the found value is 96 dB. What is the I2 / I1 ratio?
5. A sound source has an intensity I1 and when its sound level is measured at...
Sound from source 3 has a sound intensity level that is 8.3 dB less than sound from source 1. By what factor is the sound intensity from source 3 less intense than the sound intensity from source 1? (Assume the sound intensities for sources 1 and 3 are I1 and I3, respectively.)
A sound source in all directions with the same intensity. If at point A, which is 3.00 m from the source, the sound intensity level is 80.0 dB. At what distance from the source is point B, if the intensity level of the sound in it is 60.0 dB? determine the distance from the source to point B
5. By how many decibels do you reduce the sound intensity level due to a source of sound if you double your distance from it? Assume that the waves expand spherically. dB 6. The sound in a classroom is 63000 times as intense as the minimum threshold of hearing. What is the intensity level of this sound in decibels? dB
• The sound level intensity is found to be 60 dB at some location. If the power of the source increases by a factor of 4, by what percent will the dB level change?
A point source of sound generates a 200 Hz tone. The wave has an intensity of 2.2×10−8 W/m2 at a distance of 3 m from the source. Find the total sound power at the source. At what distance from the source is the decibel level below 15 dB? What is the intensity of the sound at this distance?
audio system 1 produce an intensity level of B=90.0dB, and
system 2 produces an intensity level of B=93.0 dB. the
corresponding intensities (in W/m2) are I1 and I2. Determine the
ratio I1/I2
PHY 206/206L Term: Spring 2020 Name: Due Date: 02/10/2020 HW10 (1401-3) Comparing Sound Intensities (10 pts) Audio system i produce an intensity level of B =90.0 dB, and system 2 produces an intensity level of 8 = 93.0 dB. The corresponding intensities (in W/m?)arel, and 12. Determine the...
Sound waves at ultrasonic frequencies attenuate much faster than audible sound waves. The sound intensity level of a point source of ultrasonic sound waves is measured as 100 dB at a distance of 1.00 m from the source and 65 dB at 2.00 m. Assuming the waves spread in all directions, what is the attenuation coefficient alpha? [Answer in 1/m to within 5%]
Sound waves at ultrasonic frequencies attenuate much faster than audible sound waves. The sound intensity level of a point source of ultrasonic sound waves is measured as 100 dB at a distance of 1.00 m from the source and 65 dB at 2.00 m. Assuming the waves spread in all directions, what is the attenuation coefficient alpha? [Answer in 1/m to within 5%]
When one person shouts at a football game, the sound intensity level at the center of the field is 67.3 dB. When all the people shout together, the intensity level increases to 100 dB. Assuming that each person generates the same sound intensity at the center of the field, how many people are at the game?
When one person shouts at a football game, the sound intensity level at the center of the field is 64.9 dB. When all the people shout together, the intensity level increases to 105 dB. Assuming that each person generates the same sound intensity at the center of the field, how many people are at the game?