You are sitting a distance of 14:0 m from a small speaker which is playing music....
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?
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You are sitting a distance of 14:0 m from a small speaker which
is playing music....
You sit a short distance from your speaker system, and the sound level is 21.6 dB...
You sit a short distance from your speaker system, and the sound level is 21.6 dB You then get up and move to a spot twice as far away. What is the sound level at this new position ?
if you are sitting 8.20 m from a 70.0 W speaker, what is the sound level...
if you are sitting 8.20 m from a 70.0 W speaker, what is the sound level in dB?
Your friend is belching the alphabet. Where you are standing, a distance of 2 meters from...
Your friend is belching the alphabet. Where you are standing, a distance of 2 meters from your friend, the peak sound level of their belching is 68.2 dB. You would like to move far enough away from them that you won’t have to hear their belching. Assuming that the belch noises approximate spherical waves, how far should you stand from your friend in order for the peak intensity of the sound to be the threshold of hearing, 10^−12 W/m2?
A person standing 1.05 m from a portable speaker hears its sound at an intensity of...
A person standing 1.05 m from a portable speaker hears its sound at an intensity of 6.30 x 10-3 W/m2 a) Find the corresponding decibel level. (Answer in dB). b) Find the sound intensity (in W/m2 ) at a distance of 42.0 m, assuming the sound propagates as a spherical wave. ( answer in W/m2 ). c) Find the decibel level at a distance of 42.0 m. (answer in dB).
A bagpiper is playing in the middle of the quad. To a person standing 20 m...
A bagpiper is playing in the middle of the quad. To a person standing 20 m away, the sound intensity level of the bagpiper is 90.6 dB. 17. [2pt] What is sound intensity level 24 m away from the bagpiper? (Assume that the bagpiper is a point source of spherical waves.) 18. [2pt] What's the intensity of the sound of the bagpiper 24 m away? 19. [2pt] If the sound intensity level of one bagpiper is 90.6 dB twenty meters...
A bagpiper is playing in the middle of the quad. To a person standing 20 m...
A bagpiper is playing in the middle of the quad. To a person standing 20 m away, the sound intensity level of the bagpiper is 87.8 dB. 17. What is sound intensity level 25.5 m away from the bagpiper? (Assume that the bagpiper is a point source of spherical waves.) 18. [2pt] What's the intensity of the sound of the bagpiper 25.5 m away? 19. [2pt] If the sound intensity level of one bagpiper is 87.8 dB twenty meters away,...
A person standing 1.05 m from a portable speaker hears its sound at an intensity of...
A person standing 1.05 m from a portable speaker hears its sound at an intensity of 7.90 ✕ 10−3 W/m2. (a) Find the corresponding decibel level. ____ dB (b) Find the sound intensity (in W/m2) at a distance of 39.0 m, assuming the sound propagates as a spherical wave. ____ W/m2 (c) Find the decibel level at a distance of 39.0 m.
going to an outdoor concert, and you'll be standing near a You are speaker that emits...
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.
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
Problem 10: A small child with mass m is sitting on a see-saw a distance L...
Problem 10: A small child with mass m is sitting on a see-saw a distance L from the pivot Key Concepts: Torque, Rotational Dynamics a) Where should you sit to balance the see-saw if you are 4 times heavier than the child, i.e. find Explain your reasoning in Fig. 6 b) What is the force exerted on the see-saw by the fulcrum? Find its magnitude and direction M FIG. 6
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.
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
Problem 10: A small child with mass m is sitting on a see-saw a distance L from the pivot Key Concepts: Torque, Rotational Dynamics a) Where should you sit to balance the see-saw if you are 4 times heavier than the child, i.e. find Explain your reasoning in Fig. 6 b) What is the force exerted on the see-saw by the fulcrum? Find its magnitude and direction M FIG. 6
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