If you shout across a canyon and hear the echo 0.80 s later, how wide is the canyon?

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.

Wind gusts create ripples on the ocean that have a wavelength of 0.05m and propagate at 2.00 m/s. What is their frequency?

You’ve been hired as a technical consultant to the police department to design a detector-proof device that measures the speed of vehicles. You know that a moving car emits avariety of characteristic sounds. You decide to make a very small device to be placedin the center of the road that will detect a specific frequency emitted by the car asit approaches and then measure the change in that frequency as the car moves off inthe other direction. A microprocessor in the device will then compute the speed of thevehicle. To write the program for the microprocessor you need an equation for the speedof the car using the data received by the microprocessor. Your equation may also includenecessary physical constants (such as the speed of sound).

A group of hikers hears an echo 1.30 s after shouting. How far away is the mountain that reflected the sound wave? (Assume the speed of sound is 348 m/s.)

Wind gusts create ripples on the ocean that have a wavelength of 5.00 cm and propagate at 1.90 m/s. What is their frequency?

A group of hikers hears an echo 4.00 s after shouting. How far away is the mountain that reflected the sound wave? (Assume the speed of sound is 342 m/s.) Need Help? Read It

A short blast is emitted somewhere beteeen two reflecting cliffs. Two echos are heard, once at 0.6 sec and the next at 0.9 sec. Given the speed of sound is 330 m/s, how far apart are the reflecting cliffs?

Ultrasound of intensity 2.00 x 10-2 w/m2 is produced by the rectangular head of a medical imaging device measuring 3.00 cm by 6.05 cm. What is its power output?