Question: You stand 3 0 mm from a large speaker at a concert, and the intensity of the sound you hear from that speaker is 3

You stand30 mm from a large speaker at a concert, and the intensity of the sound you hear from that speaker is310^(-2)W/m^(2)
How much power is the speaker emitting?
What is the intensity of the sound from the speaker at a distance of60 m ?
The pain threshold for humans is a sound intensity level of about 120dB. At what distance from this speaker would the sound be painful?

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