Use the following information for determining sound intensity. The number of decibels ? of a sound with an intensity of I watts per square meter is given by ? = 10 log(I/I0), where I0 is an intensity of 10−12 watt per square meter, corresponding roughly to the faintest sound that can be heard by the human ear. Find the number of decibels ? of the sound. (a). I = 10−10 watt per m2 (quiet room) ? = ________________dB? (b). I = 10−5 watt per m2 (busy street corner) ? = ______________dB? (c). I = 10−8 watt per m2 (quiet radio) ? = ____________dB? (d). I = 100 watt per m2 (threshold of pain) ? =_____________dB?
Use the following information for determining sound intensity. The number of decibels ? of a sound with an intensity of I watts per square meter is given by ? = 10 log(I/I0), where I0 is an intensity of 10−12 watt per square meter, corresponding roughly to the faintest sound that can be heard by the human ear. Find the number of decibels ? of the sound. (a). I = 10−10 watt per m2 (quiet room) ? = ________________dB? (b). I = 10−5 watt per m2 (busy street corner) ? = ______________dB? (c). I = 10−8 watt per m2 (quiet radio) ? = ____________dB? (d). I = 100 watt per m2 (threshold of pain) ? =_____________dB?
Chapter6: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 50RE: The formula for measuring sound intensity indecibels D is defined by the equation D=10log (II0),...
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Use the following information for determining sound intensity. The number of decibels ? of a sound with an intensity of I watts per square meter is given by ? = 10 log(I/I0), where I0 is an intensity of 10−12 watt per square meter, corresponding roughly to the faintest sound that can be heard by the human ear. Find the number of decibels ? of the sound.
(a). I = 10−10 watt per m2 (quiet room)
? = ________________dB?
(b). I = 10−5 watt per m2 (busy street corner)
? = ______________dB?
(c). I = 10−8 watt per m2 (quiet radio)
? = ____________dB?
(d). I = 100 watt per m2 (threshold of pain)
? =_____________dB?
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