(a) What frequency is received by a person watching an oncoming ambulance moving at 105 km/h and emitting a steady 753 Hz sound from its siren? The speed of sound on this day is 345 m/s. Hz (b) What frequency does she receive after the ambulance has passed? Hz

Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 436 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.) m/s

At rest, a car’s horn sounds at a frequency of 550Hz. When the horn is sounded, while the car is moving down a street, a bicyclist moving at 8.50m/s in the direction opposite to the car hears a frequency of 575Hz. (a) What is the speed of the car? (b) If the cyclist slows down to 2.50m/s before passing the car, what is the new frequency detected by the cyclist? Assume that the car moves with the same speed, and that the speed of sound in air is 343m/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?

Final Answer must be a decimal or whole numbers only!!!

(a) What frequency is received by a person watching an oncoming ambulance moving at 105 km/h and emitting a steady 713 Hz sound from its siren? The speed of sound on this day is 345 m/s. (b) What frequency does she receive after the ambulance has passed?

Answer Please

A stationary police car emits a sound of frequency 1200 HzHz that bounces off of a car on the highway and returns with a frequency of 1260 HzHz. The police car is right next to the highway, so the moving car is traveling directly toward or away from it. What frequency would the police car have received if it had been traveling toward the other car at 23.0 m/sm/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.)

A train is moving away from an observer at a speed of 50 m/s with its whistle on, the frequency of the whistling sound being 400 Hz. What should be the approximate frequency heard by a stationary observer? Take the speed of sound as 345 m/s when atmospheric temperature is 24°C. 328 Hz 310 Hz 380 Hz 349 Hz