An ambulance is traveling East at 20m/s. The siren emits a fixed
frequency of 500Hz. Each of the following cars is traveling down
the road as described. Rank the cars according to the frequency the
driver will hear. Select 1 for the car which will hear the highest
frequency. Remember that if the frequency is the same, select the
same rank and skip the next number. I really suggest drawing a
picture to help sort this out. Keep in mind the relative speed -
How fast does it seem the ambulance is moving towards or away from
each driver? OPTIONS ARE 1,2,3,4
1 2 3 4 A car driving East at a speed of 20m/s. The car
is behind the ambulance.
1 2 3 4 A car driving West at a speed of 15m/s. The car
is moving towards the ambulance.
1 2 3 4 A car sitting stationary at the side of the road
watching the ambulance moving away.
1 2 3 4 A car driving West at a speed of 25m/s. The car
has already passed the ambulance.
An ambulance is traveling East at 20m/s. The siren emits a fixed frequency of 500Hz. Each...
An ambulance is traveling East at 20m/s. The siren emits a fixed frequency of 380Hz. Each of the following cars is traveling down the road as described. Determine if the driver of the car will hear a frequency the same as 380Hz, higher than 380Hz, or lower than 380Hz. I really suggest drawing a picture to help sort this out. a) A car driving East at a speed of 20m/s. The car is in front of the ambulance. b) A...
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)
Suppose an ambulance is driving at 28m/s, with its siren going off at a frequency of 700Hz. You are in your car, waiting at a red light as it approaches. Assume the sound of the siren is traveling at 341m/s. a. What frequency do you hear the horn as it gets closer to you? b. What frequency do you hear the horn as it passes you?
A siren, attached to a parked car, emits a sound with frequency 960 Hz. You are driving in your car, either straight towards or straight away from the parked car, and hear a frequency of 1069 Hz. Are you moving towards or away from the car? towards away How fast must you be moving? (Give your answer rounded to two sigfigs.)40
A woman is sitting at a bus stop when an ambulance with a siren wailing at 316 Hz approaches at 63 miles per hour (mph). Assume the speed of sound to be 343 m/s. a) How fast is the ambulance moving in meters per second? (perform the necessary unit conversion) vs= 63 mph = b) What frequency does the woman hear? fa = _______ Hz c) What speed (vs) would the ambulance be traveling in order for the woman to...
The siren on an ambulance is emitting a sound whose frequency is 2850 Hz. The speed of sound is 343 m/s. (a) If the ambulance is stationary and you (the "observer") are sitting in a parked car, what are the wavelength and the frequency of the sound you hear? (b) Suppose that the ambulance is moving toward you at a speed of 26.6 m/s. Determine the wavelength and the frequency of the sound you hear. (c) If the ambulance is...
An ambulance moving at 43 m/s sounds its siren whose frequency is 400 Hz. A car is moving in the same direction as the ambulance at 19 m/s. (a) What frequency does a person in the car hear as the ambulance approaches the car? Hz (b) What frequency does a person in the car hear after the ambulance passes the car? Hz
An ambulance moving at 41 m/s sounds its siren whose frequency is 490 Hz. A car is moving in the same direction as the ambulance at 24 m/s. (a) What frequency does a person in the car hear as the ambulance approaches the car? _________Hz (b) What frequency does a person in the car hear after the ambulance passes the car? __________Hz