Serway & Jewett — Wave Motion: Problem 41

Review. A block with a speaker bolted to it is connected to a spring having spring constant \(k = 20.0 \text{ N/m}\) and oscillates as shown in Figure P16.41. The total mass of the block and speaker is \(5.00 \text{ kg}\), and the amplitude of this unit’s motion is \(0.500 \text{ m}\). The speaker emits sound waves of frequency \(440 \text{ Hz}\). Determine (a) the highest and (b) the lowest frequencies heard by the person to the right of the speaker. (c) If the maximum sound level heard by the person is \(60.0 \text{ dB}\) when the speaker is at its closest distance \(d = 1.00 \text{ m}\) from him, what is the minimum sound level heard by the observer?