In a certain factory space, the noise level with an electric motor in operation is 93...

 

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In a certain factory space, the noise level with an electric motor in operation is 93 dB. When the motor is turned off, the background noise is 85 dB. Determine the sound pressure level due to the motor? (2 marks) In a certain factory space, the noise level with an electric motor in operation is 93 dB. When the motor is turned off, the background noise is 85 dB. Determine the sound pressure level due to the motor? (2 marks)