An ambulance traveling eastbound at 154.0 km/h with sirens blaring at a frequency of 7.50 ✕ 102 Hz passes cars traveling in both the eastbound and westbound directions at 45.0 km/h. (Assume the speed of sound is 343 m/s.)
(a) What is the frequency observed by the eastbound drivers as
the ambulance approaches from behind?
Hz
(b) What is the frequency observed by the eastbound drivers after
the ambulance passes them?
Hz
(c) What is the frequency observed by the westbound drivers as the
ambulance approaches them?
Hz
(d) What is the frequency observed by the westbound drivers after
the ambulance passes them?
Hz
An ambulance traveling eastbound at 154.0 km/h with sirens blaring at a frequency of 7.50 ✕...
Standing at a crosswalk, you hear a frequency of 510 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 433 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.)
An ambulance is moving with a velocity of 45.0 m/s. The siren has a frequency of 130 Hz. The temperature of the air outside is 90° F a) What frequencies are observed by a stationary person on the sidewalk as the ambulance approaches and after it passes? b) The ambulance now stops and you run towards it at 4.0 m/s along the sidewalk. What is the frequency you observe? c) The sound intensity level of the siren is 110 dB....
(a) What frequency is received by a person watching an oncoming ambulance moving at 130 km/h and emitting a steady 773 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
You are driving down the road at 15.6 m/s (35 mph) when an ambulance passes you with its siren blaring. The ambulance siren produces a frequency of 700 Hz. As the ambulance approaches you from behind, you hear a frequency of 730 Hz . The speed of sound in air is 344 m/s. What is the speed of the ambulance? The positive direction points from your car (listener) toward the ambulance (source). Express your answer in meters per second.
An ambulance sounding its siren with a frequency of 1550 Hz is traveling along a straight road with a speed of 34 m/s. Two cars are ahead of the ambulance in an adjacent lane. One car has completely stopped. A second car continues to travel in the same direction as the ambulance with a speed of 20 m/s. (a) Which of the two cars hears the highest pitch coming from the ambulance? Explain. (b) Suppose the driver of the stationary...
An ambulance travels east down a highway at a speed of 33.5 m/s, and its siren emits a sound frequency at a frequency of 400 Hz. What frequency is heard by a person in a car traveling west at 24.6 m/s: a) as the car approaches the ambulance ? b) as the car moves away from the ambulance ? (Take the speed of sound to be 343 m/s) PLEASE INCLUDE WRITTEN EXPLANATION
B) An ambulance travels east down a highway at a speed of 33.5 m/s, and its siren emits a sound frequency at a frequency of 400 Hz. What frequency is heard by a person in a car traveling west at 24.6 m/s: a) as the car approaches the ambulance ? (8 pts) b) as the car moves away from the ambulance ? (7 pts) (Take the speed of sound to be 343 m/s)
Standing at a crosswalk, you hear a frequency of 540 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 431 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.)
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 430 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.) m/s
A motorcyclist is traveling north on a road at a speed of 21.0 m/s. A police car, traveling south at a speed of 33.0 m/s, approaches with its siren producing sound at a frequency of 2550 Hz. (Enter your answers in Hz. Assume that the speed of sound in air is 343 m/s.) (a) What frequency does the motorcyclist observe as the police car approaches? (Enter your answer to the nearest integer.) Hz (b) What frequency does the motorcyclist detect...