Abat flies toward a wall, emitting a steady sound of frequency f in its own reference frame. the bat hears its own sound plus the sound reflected by the wall, which together produce a beat frequency of 8.00 hz. if the bat is flying at 1.00 m/s, what is the frequency f? (you may take the speed of sound in air to be 344.0 m/s.)

You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?