A group of hikers hears an echo 3.20 s after shouting. How far away is the mountain that reflected the sound wave? (Assume the speed of sound is 346 m/s.)
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A group of hikers hears an echo 3.20 s after shouting. How far away is the mountain that reflected the sound wave? (Assume the speed of sound is 346 m/s.)
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- A group of hikers hears an echo 3.40 s after shouting. How far away is the mountain that reflected the sound wave? (Assume the speed of sound is 341 m/s.)The speed of sound in air is given as 340 m/s. What is the wave length of a 318 frequency wave?A fire truck is moving at 33 m/s, and a car in front of the truck is moving in the same direction at 43 m/s. If a 193-Hz siren blares from the truck, what frequency is heard by the driver of the car at v=343 m/s? No need to include the unit. Write your answer in whole numbers.
- A 2nd harmonic sound wave fills an empty glass jug 60 cm long. If it moves at 340 m/s, what is the frequency produced?A group of hikers hears an echo 4.60 s after shouting. How far away is the mountain that reflected the sound wave? (Assume the speed of sound is 342 m/s.)Bats of the Vespertilionidae family detect the distance to an object by timing how long it takes for an emitted signal to reflect off the object and return. Typically they emit sound pulses 3.00 ms long and 70.0 ms apart while cruising. If an echo is heard 32.8 ms later (vsound = 331 m/s), how far away is the object? When an object is only 39.2 cm away, how long will it be before the echo is heard? When an object is only 39.2 cm away, the bat __________ able to detect the echo.
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