Question

A whistle you use to call your hunting dog has a frequency of 24 kHz, but your dog is ignoring it. You suspect the whistle may not be working, but you can't hear sounds above 23 kHz. To test it, you ask a friend to blow the whistle, then you hop on your bicycle.

At what minimum speed should you ride to know if the whistle is working?

Answer in m/s

15 years ago