1) A bat flying at 4.00 m/s is chasing an insect flying in the samedirection. If the bat emits a 40.0-kHz chirp and receives back an echoat 40.4 kHz, what is the speed of the insect? (Take the speed of soundin air to be 340 m/s.)2) The acoustical system shown in the figure below is driven by aspeaker emitting sound of frequency 732 Hz. (Take the speed of sound as345 m/s.)Image: http://www.webassign.net/sercp8/14-14.gif(a) If constructive interference occurs at a particular instant, by whatminimum amount should the path length in the upper U-shaped tube beincreased so that destructive interference occurs instead?(b) What minimum increase in the original length of the upper tube willagain result in constructive interference?
What is the speed of the insect?
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