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Bats rely on sound localization to be able to fly during the night. O.pdf

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Bats rely on sound localization to be able to fly during the night. On a cool 20 degree C summer night, a bat produces an ultrasonic sound with a frequency of 37 kHz. What is the wavelength of this ultrasound, in meters? While remaining stationary, the bat emits a sound pulse and receives an echo after 0.130 s. How far away, in meters, is the reflecting object from the bat? Solution 1) wave length of ultra sound waves = velocity / frequency = 330/37kHz ( velocity of ultra sound waves in air = 330 m/sec) =.00089189m 2) time taken = .130 distance travelled for the sound pulse = 2*d ( because it is also returing back after strucking the object) v*t=2*d d= 330*.130/2=21.45m.

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Bats rely on sound localization to be able to fly during the night. On a cool 20 degree C summer night, a bat produces an ultrasonic sound with a frequency of 37 kHz. What is the wavelength of this ultrasound, in meters? While remaining stationary, the bat emits a sound pulse and receives an echo after 0.130 s. How far away, in meters, is the reflecting object from the bat? Solution 1) wave length of ultra sound waves = velocity / frequency = 330/37kHz ( velocity of ultra sound waves in air = 330 m/sec) =.00089189m 2) time taken = .130 distance travelled for the sound pulse = 2*d ( because it is also returing back after strucking the object) v*t=2*d d= 330*.130/2=21.45m

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Bats rely on sound localization to be able to fly during the night. O.pdf

  • 1. Bats rely on sound localization to be able to fly during the night. On a cool 20 degree C summer night, a bat produces an ultrasonic sound with a frequency of 37 kHz. What is the wavelength of this ultrasound, in meters? While remaining stationary, the bat emits a sound pulse and receives an echo after 0.130 s. How far away, in meters, is the reflecting object from the bat? Solution 1) wave length of ultra sound waves = velocity / frequency = 330/37kHz ( velocity of ultra sound waves in air = 330 m/sec) =.00089189m 2) time taken = .130 distance travelled for the sound pulse = 2*d ( because it is also returing back after strucking the object) v*t=2*d d= 330*.130/2=21.45m