You are watching a live music show, and at the location of the stage, where all the speakers are located, the sound intensity is 50.01 mW/m2. If you are 64.01 meters away from the stage, what is the sound intensity level that you hear (in units of decibels, dB)?
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You are watching a live music show, and at the location of the stage, where all the speakers are located, the sound intensity is 50.01 mW/m2. If you are 64.01 meters away from the stage, what is the sound intensity level that you hear (in units of decibels, dB)?
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- You are at BNA (Nashville Airport) watching commercial airliners take off. At a distance of 1,020.6 away from the plane, you record a sound intensity level of 73.4 decibels. If you move such that the new sound intensity level is 88.07 decibels, how far are you away from the plane (in meters)?You are at BNA (Nashville Airport) watching commercial airliners take off. At a distance of 1,364.2 away from the plane, you record a sound intensity level of 69.31 decibels. If you move such that the new sound intensity level is 91.34 decibels, how far are you away from the plane (in meters)?A speaker designed to emit spherical sound waves is producing a sound intensity of 8 W/m2 at a distance of 1 m from the speaker. What would be the intensity of this sound at a distance of 2 m from the speaker?
- You detect a sound intensity of 0.0000136 W/m2 coming from a speaker with a power of 0.217 W. How far away from the speaker are you standing?You hear a song from your playlist you haven't heard in a while and it warrants you to commence singing. As you are sing, the power of the compression wave you create is approximately 297.02 nW (note, nW is nano-Watts). What is the intensity of this sound as measured by your roommate who is standing 6.04m from you? Please give your answer in units of nW/m2. This unit is not a common one. Usually, the unit would simply be Watts per square-meter (which would be your answer divided by a million!). This goes to show you that are ears are amazingly sensitive to very tiny sound intensities. Note: Intensity was a topic covered in section 11.1, and I will provide the formula: I = P / A where P is the power in units of Watts, and A is the surface area of a sphere of radius "L" (in this problem).A point source emits sound with a power output of120 watts. What is its sound intensity level (indB) at 17.0 meters from the source?
- What is the sound intensity level in dB produced by earphones that create an intensity of 8.5 x 10^-2 W/m^2?A sound wave radiates from a speaker in all directions. If the power of the sound source is 250 W, calculate the intensity level in dB of the sound wave 0.4 km from the speaker. Hint: Presume that the sound waves spread as a sphere (not a hemisphere).You hear a song from your playlist you haven't heard in a while and it warrants you to commence singing. As you are sing, the power of the compression wave you create is approximately 579.05 nW (note, nW is nano-Watts). What is the intensity of this sound as measured by your roommate who is standing 9.89m from you? Please give your answer in units of nW/m2. This unit is not a common one. Usually, the unit would simply be Watts per square-meter (which would be your answer divided by a million!). This goes to show you that are ears are amazingly sensitive to very tiny sound intensities. Note: Intensity was a topic covered in section 11.1, and I will provide the formula: ?=?/?I=P/A where ?P is the power in units of Watts, and ?A is the surface area of a sphere of radius "L" (in this problem).