At a rock concert, the engineer decides that the music isn't loud enough. He turns up the amplifier…

At a rock concert, the engineer decides that the music isn #x27;t loud enough. He turns up the amplifiers so that the amplitude of the sound, where you #x27;re sitting, increases by 50.0 %. (a) By what percentage does the intensity increase? (b) How does the intensity level (in dB ) change?

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