QUESTION 17 The intensity of a certain sound wave is 4x10-4 W/m2. If the intensity level of the sound increases by 30 dB, the intensity has increased to... Ca. 1.2x10-2 W/m2 b. 14.0x10-2 W/m2 * 4.0x10-1 W/m2 d. 1.33x10-1 W/m2
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