Expensive stereo amplifier A is rated at 200 W per channel, while the more modest...

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...amplifier B is rated at 50 W? Expensive stereo amplifier A is rated at 200 W per channel, while the more modest amplifier B is rated at 50 W per channel.
(a) Estimate the intensity level in decibels you would expect at a point 2.0 m from a loudspeaker connected in turn to each amp.
expensive amp
dB
modest amp
dB
 
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