A ball producing a sound with a frequency f = 1791 Hz moves away from you at a constant speed of 13.00 m/s. While standing stationary holding a sound meter, you notice that when the ball is 3.00 m from you, the sound meter gives a reading of 60.7 dB. The speed of sound in air is 340.0 m/s. Part 1) What is the intensity of sound you detect from the ball when it is 3.00 m away? I = Wm-2 Part 2) When the ball is 63.97 m from you what sound level do you measure? Assume that the sound waves spread out isotropically through space. You do not need to account for any reflections. B = dB Part 3) What is the frequency of sound from the ball detected by the sound meter? f = Hz

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A ball producing a sound with a frequency f = 1791 Hz moves away from you at a constant speed of 13.00 m/s. While standing stationary holding a sound
meter, you notice that when the ball is 3.00 m from you, the sound meter gives a reading of 60.7 dB. The speed of sound in air is 340.0 m/s.
Part 1)
What is the intensity of sound you detect from the ball when it is 3.00 m away?
I =
Wm 2
Part 2)
When the ball is 63.97 m from you what sound level do you measure? Assume that the sound waves spread out isotropically through space. You do not need
to account for any reflections.
B =
dB
Part 3)
What is the frequency of sound from the ball detected by the sound meter?
f =
Hz
Transcribed Image Text:Question: A ball producing a sound with a frequency f = 1791 Hz moves away from you at a constant speed of 13.00 m/s. While standing stationary holding a sound meter, you notice that when the ball is 3.00 m from you, the sound meter gives a reading of 60.7 dB. The speed of sound in air is 340.0 m/s. Part 1) What is the intensity of sound you detect from the ball when it is 3.00 m away? I = Wm 2 Part 2) When the ball is 63.97 m from you what sound level do you measure? Assume that the sound waves spread out isotropically through space. You do not need to account for any reflections. B = dB Part 3) What is the frequency of sound from the ball detected by the sound meter? f = Hz
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