ei try mo nga sgutaan tong question n to..di ko magets kung pano eh

An amplifier can deliver 100W to a loudspeaker. If the rated efficiency of the loudspeaker is -60dB,

what is the maximum intensity 300ft from it

ang sgot daw eh 30dB..di ko makuha kung pano

10 log (100/1x10-12

140 - 60

80db - 20 log (300ft->m) -11

lalabas 29.7777

san galing un?

bakit 11?? eh di nmn s taas galing ung source???

11 tlga!.. 8 pg s ground eh..