please help with these three questions 1) The sound intensity levels for a machine shop and a quieter working area are 100 dB and 42 dB, respectively. How many times greater is the intensity of the sound in the machine shop than that in the library? 2) What would be the intensity level of a 54-decibel sound after being amplified a million times? 3) A dB meter registers 129 dB when placed 2.2 m in front of a loudspeaker. Assuming uniform spherical spreading of the sound, what is the power output of the speaker?
please help with these three questions 1) The sound intensity levels for a machine shop and a quieter working area are 100 dB and 42 dB, respectively. How many times greater is the intensity of the sound in the machine shop than that in the library? 2) What would be the intensity level of a 54-decibel sound after being amplified a million times? 3) A dB meter registers 129 dB when placed 2.2 m in front of a loudspeaker. Assuming uniform spherical spreading of the sound, what is the power output of the speaker?
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Transcribed Image Text:please help with these three questions
1) The sound intensity levels for a machine shop and a quieter working area are 100 dB and 42 dB, respectively. How many times greater is the intensity of the
sound in the machine shop than that in the library?
2) What would be the intensity level of a 54-decibel sound after being amplified a million times?
3) A dB meter registers 129 dB when placed 2.2 m in front of a loudspeaker. Assuming uniform spherical spreading of the sound, what is the power output of the
speaker?
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