A rock band gives rise to an average sound level of 100 dB at a distance 20 m from the centre of the band. As an approximation, assume that the sound radiated by the band spreads out in the shape of a sphere centred at the band. What is the power of sound produced by the band?

A rock band gives rise to an average sound level of 100 dB at a distan

1.	A rock band gives rise to an average sound level of 100 dB at a distance 20 m from the centre of the band. As an approximation, assume that the sound radiated by the band spreads out in the shape of a sphere centred at the band. What is the power of sound produced by the band?
Answer» A rock band gives rise to an average sound level of $100 dB$ at a distance $20 m$ from the centre of the band. As an approximation, assume that the sound radiated by the band spreads out in the shape of a sphere centred at the band. What is the power of sound produced by the band?

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A rock band gives rise to an average sound level of 100 dB at a distance 20 m from the centre of the band. As an approximation, assume that the sound radiated by the band spreads out in the shape of a sphere centred at the band. What is the power of sound produced by the band?

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