I = P/4πr^2
QUESTION The power output of a sound system is increased by a factor of 25. By...
QUESTION The power output of a sound system is increased by a factor of 25. By what factor should you adjust your distance from the speakers so the sound intensity is the same? . PRACTICE IT .............. Use the worked example above to help you solve this problem. A small source emits sound waves with a power output of 81.3 W. (a) Find the intensity 3.08 m from the source. . 75X Your response is within 10% of the correct...
EXERCISE HINTS GETTING STARTED I'M STUCK! Suppose a certain jet plane creates an intensity level of 129 dB at a distance of 5.71 m. What intensity level does it create on the ground directly underneath it when flying at an altitude of 2.24 km?
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111 w (a) Find the intensity 10.7 m from the source W/m2 (b) Find the intensity level in decibels at that distance. dB (c) At what distance would you experience the sound at the threshold of pain, 120 dB? Need Help? Read 11. -/2 points SerCP10 14 P023 My No A commuter train passes a passenger platform at a constant speed of 42.1 m/s. The...
A point source emits sound waves with a power output of 100 watts. What is the sound level (in dB) at a distance of 10 m? 16-5
A listener increases his distance from a sound source by a factor of 5.45. Assuming that the source emits sound uniformly in all directions, what is the change in the sound intensity level in dB?
A listener increases his distance from a sound source by a factor of 2.29. Assuming that the source emits sound uniformly in all directions, what is the change in the sound intensity level in dB?
Suppose a certain jet plane creates an intensity level of 118 dB at a distance of 5.42 m. What intensity level does it create on the ground directly underneath it when flying at an altitude of 2.48 km?
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111 W (a) Find the intensity 10.7 m from the source. 0.76 Your response differs from the correct answer by more than 100%, w/m? (b) Find the intensity level in decibels at that distance. 118.8 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation Cary out all inter to...
5. A point source emits a sound with an average power output of 80.0w. a) What is the intensity of the sound 3.00m away from the source? b) How far away from the source would you have to be to experience an intensity of 1.00x108 W/m2?
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?