Sound Waves. A pure tone created by a vibrating tuning fork shows up as a sine wave on an oscilloscope's screen. A tuning fork vibrating at 256 hertz (Hz) gives the tone middle C and can have the equation y=0.005 sin[(2 π)(256 t)] where the amplitude is in centimeters (cm) and the time t in seconds. What are the amplitude and frequency of the wave where the frequency is (1)/(p) in cycles per second? Note: 1 hertz =1 cycle per second. | Numerade
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