Sound from the siren of an emergency vehicle has a frequency of 749.1 Hz and moves with a velocity of 341.4 m/s. What is the distance from one condensation to the next?

Two trains approach each other, each train traveling at 26 m/s.  The engineer on one train sounds his horn which has a frequency of 163Hz.  What frequency does a passenger on the second train hear? Use 340 m/s for the speed of sound in air

A bat flying in a cave emits a sound and receives its echo 0.09 s later. Find the distance to the wall of the cave. Express your answer to two significant figures and include the appropriate units.

A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 5.83 104 Hz, and if the speed of sound in air is 343 m/s, what is the smallest insect a bat can detect?mm

Problem 6: A bat, flying at 4.9 m/s, pursues an insect that is flying at 1.4 m/s in the same direction. The bat emits a 49000-Hz sonar pulse. Take the speed of sound to be 343 m/s. At what frequency, in hertz, does the bat hear the pulse reflected back from the insect? Numeric : Anumeric value is expected and not an expression. f =.

A bicydist is traveling at t m/s towards a car at rest. if the dniver blows her horn at a frequency. of l627 Hz, what frequency in Hz does the bicyclist hear? Speed of Sound is 343 m/S

4. An observer is standing on the platform of a railway station. A train goes through the station without stopping. If the frequency of the train whistle decreases by a factor of 1/4 as it approaches and then passes him, calculate the speed of the train (assume the speed of sound in air = 343 m/s).

Problem 9:  One day when the speed of sound in air is 343 m/s, a fire truck traveling at vs = 34 m/s has a siren which produces a frequency of fs = 438 Hz.Randomized Variables vS = 34 m/sf = 438 Hz       Part (a) What frequency (in Hertz) does the driver of the truck hear?Numeric   : A numeric value is expected and not an expression.fd = __________________________________________Part (b) What frequency (in Hertz) does an observer hear when the truck is moving away?Numeric   : A numeric value is expected and not an expression.fo = __________________________________________   Problem 10:  A student knows that an ambulance siren has a frequency of fs = 395 Hz. He measures, when the ambulance is approaching him, the frequency fo = 416 Hz. Assume the speed of sound is 343 m/s in this problem.       Part (a) Input an expression for the ambulance's speed, vs, in terms of the frequencies and the speed of sound v.Expression   :vs =…

Standing at a crosswalk, you hear a frequency of 590 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 501 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.) m/s

A fire engine siren emits sound at 1260 Hz. The fire engine is driving down the street toward you at 29 m/s. (The speed of sound in air is 343 m/s.) What frequency sound do you hear? What frequency sound do you hear after the fire engine passes you?