A Doppler blood flow meter unit emits ultrasound at 4.1MHz. What is the measured blood speed if the flow meter records a frequency shift of 1.6 kHz? Use the speed of ultrasound in human tissue. (1540 m/sec through tissue)

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 tsunami generated off the coast of Chile in 1990 traveled nearly 6500 miles to the coast of Honolulu in 17 hours. Determine the speed in mi/hr and m/s. If the average width of such waves was 22 m, what was the average frequency of such a devastating tsunami? (Given: 1.0 m/s = 2.24 mi/hr) O 382 mi/h, 171 m/s, 7.8 Hz 283 mi/h, 126 m/s, 5.7 Hz O 402 mi/h, 180 m/s, 8.16 Hz O 117 mi/h, 52.3 m/s, 2.4 Hz

A bat is flying 5.10 m/s is chasing an insect flying in the same direction. The bat emits a 39.9 kHz chirp and receives back an echo at 40.6 kHz. What is the speed of the insect ?

If a stationary dolphin emits a call at a sound frequency of 53 kHz. The sound wave reflects off a fish moving directly towards the dolphin. And the sound wave echo returns at a frequency of 55 kHz. What is the speed of the fish? The speed of sound is 343 m/s.

A dolphin uses echolocation underwater to "see" its surroundings. If the speed of sound in the ocean is 1530m/s, how long would it take for the dolphin to hear an echo if the ocean floor is 2.57km below it?

An ambulance with a siren emitting a frequency of 1600HZ overtakes and passes a cyclist pedaling a bike at 4 m/s. After being passed, the cyclist hears a frequency of 1590HZ. How fast is the ambulance moving? Temperature of air is 25°C. 2.

A sound wave has an intensity level of 121.3 dB in air. The density of air at 20.0°C is ρ = 1.20 kg/m3 (see Table 9.1). The speed of sound in air at 20.0°C is v = 343 m/s (see Table 12.1).   What is the pressure amplitude of the wave?

Standing at a crosswalk, you hear a frequency of 570 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 488 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.)

A bystander hears a siren vary in frequency from 584 Hz to 370 Hz as a fire truck approaches, passes by, and movesaway on a straight street. What is the speed of the truck? (Take the speed of sound in air to be 343 m/s.)