Part A A whistle you use to call your hunting dog has a frequency of 21 kHz, but your dog is ignoring it. You suspect the whistle may not be working, but you can't hear sounds above 20 kHz. To test it, you ask a friend to blow the whistle, then you hop on your bicycle. In which direction should you ride (toward or away from your friend) to know if the whistle is working? O toward your friend O away from your friend O in any direction Submit Request Answer Part B At what minimum speed should you ride to know if the whistle is working? Express your answer to two significant figures and include the appropriate units. μΑ 2) ? Value Units V = Submit Request Answer

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Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.