A spherical source radiates sound uniformly in all directions. At a distance of 9 m, the sound intensity level is 100 dB. What power is radiated by this source?
A spherical source radiates sound uniformly in all directions. At a distance of 9 m, the...
A spherical source radiates sound uniformly in all directions. At a distance of 14 m, the sound intensity level is 90 dB. What power is radiated by this source?
A sound wave radiates from a source in all directions. If the power of the sound source is 200 watts, then the intensity level of the sound wave 1000 m from the source is (in dB)
Q2. A siren radiates sound uniformly in all directions. A person standing a distance L from the siren regsiters a sound intensity level of 115 dB but a person standing twice that distance registers an intensity of 109 dB. What is the ratio of the intensities at those points. What will the sound intensity level at a distance of 12 L be?
The sound from a trumpet radiates uniformly in all directions in air with a temperature of 20∘C. At a distance of 4.98 m from the trumpet the sound intensity level is 56.0 dB. The frequency is 586 Hz. Use 344 m/s for the speed of sound in air, 1.20 kg/m3 for the density of air, and 1.00×10−12 W/m2 for the reference intensity. a) What is the pressure amplitude at this distance? b) What is the displacement amplitude? Use 1.42×105 Pa...
The sound from a trumpet radiates uniformly in all directions in air with a temperature of 20∘C. At a distance of 4.90 m from the trumpet the sound intensity level is 49.0 dB . The frequency is 584 Hz . Part A What is the pressure amplitude at this distance? Use 344 m/s for the speed of sound in air, 1.20 kg/m3 for the density of air, and 1.00×10−12 W/m2 for the reference intensity. Part B What is the displacement...
A sound wave radiates from a source in all directions. If thepower of the sound source is 200 watts, then the intensity level ofthe sound wave 100m from the source is, in dB
A power saw radiates sound uniformly in all directions and is measured at 103 dB 1.66 m from the saw. At what distance from the saw should you be so that the sound is at a safe level of 65.0 dB? Number Units (Anser must have 3 significant figures.)
A source emits sound uniformly in all directions. There are no reflections of the sound. At a distance of 12 m from the source, the intensity of the sound is 3.3 × 10-3 W/m2. What is the total sound power P emitted by the source?
A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. At a distance of 5.50 km from the source, a detector measures the intensity of the wave to be 24.0 μW/m2. What is the peak value of the magnetic field at the detector due to the wave? 4.48×10-10 T What is the average power radiated by the source? 9.12×103 W Now the detector is replaced with a perfectly absorbing sheet normal to the incident flux,...
At 3meters from a source that is emitting sound uniformly in all directions the sound level is 53 db. What is the intensity of the sound at 3 meters