8. What is the minimum power a loud speaker should have, in order to have a...
5) At a rap concert, a dB meter registered 130 dB when placed 2.5 m in front of the loud speaker on stage. a) What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? (5 pts) b) How far away would the sound level be 85 dB? (5 pts)
What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? Express your answer to two significant figures and include the appropriate units. Constants At a rock concert, a dB meter registered 125 dB when placed 2.9 Im in front of a loudspeaker on the stage. The intensity of the reference level required to determine the sound level is 1.0 x 10-12 W/m? 勺 ? ' P-1 Value Units Submit...
A speaker produces 11W of acoustical power. If the speaker projects sound uniformly in all directions, at what distance from the speaker will the loudness of the sound be 98.3 dB?
Question 11 A speaker produces 1W of acoustical power. If the speaker projects sounduniformly in all directions, at what distance from the speaker will the loudness of the sound be 99.1 dB? Enter answer here 9.79 9.79 m CHECK ANSWER 1 of 4 attempts used
going to an outdoor concert, and you'll be standing near a You are speaker that emits 50 W of acoustic power as a spherical wave. What minimum distance should you be from the speaker to keep the sound intensity level below 94 dB? Express your answer to two significant figures and include the appropriate units.
Loud Bird Review A loud bird is chirping at the top of a tall tree. The bird outputs 60 W of power, and the sound energy emitted by the bird propagates equally in all directions Suppose you are walking directly toward the bird at 0.55 m/s. Part A What is the sound intensity level at a point where you are 20 m from the bird? Express your answer with the appropriate units BValue Units Submit Request Answer Part B At...
At a concert, a person is standing 2.00 m from a speaker, where the sound intensity is 0.120 W/m? Another person is 32,0 m from the speaker. Assume the sound is emitted equally in all directions to -1.00 x 10-12 W/m2 a) What is the intensity in Wim? at 32.0 m from the speaker? b) What is the sound level in dB at 32.0 m from the speaker? ОА The intensity is 7.50 x 10 wim? DB The intensity is...
You are sitting a distance of 14:0 m from a small speaker which is playing music. The sound level at your location is 55:0 dB. Assuming that the waves emitted are approximately spherical, how far from the speaker should you sit if you want the sound level to be 8:00 dB?
8. -4 points SerPSE10 16.9 P041 My Notes Ask Your Teache A block with a speaker bolted to it is connected to a spring having spring constant k 19.0 N/m and oscillates as showrn in the figure below. The total mass of the block and speaker is 6.00 kg, and the amplitude of this unit's motion is 0.500 m. The speaker emits sound waves of frequency 120 Hz. (a) Detemine the highest frequencles heard by the person to the right...
At a concert, a person is standing 2.00 m from a speaker, where the sound intensity is 0.120 W/m2. Another person is 32.0m from the speaker. Assume the sound is emitted equally in all directions. lo = 1.00 x 10-12 W/m2 a) What is the intensity in W/m2 at 32.0 m from the speaker? b) What is the sound level in dB at 32.0 m from the speaker? The intensity is 7.50 x 10-3 W/m2 The intensity is 3.00 x...