Two cars  A  and  B  are approaching a crossroad junction  P  as shown. At an instant when  A  is :  180m  and  B  is  255m  away from  P, A  momentary blows a horn of frequency  2.94Hz . Find corresponding frequency observed by  B  is  39N25Hz . Find the value of  N  ? [  Vsoupd.   =  300m/s  ]

A car approaches you with its horn blowing. The observed frequency is 503.7 Hz. Assume the speed of sound is 1100 ft/s. The car's horn has a frequency of 450 Hz. How fast is the car going? Express your answer in mph. mph

A train is moving past a crossing where cars are waiting for it to pass. While waiting, the driver of the lead car becomes sleepy and rests his head on the steering wheel, unintentionally activating the car's horn. A passenger in the back of the train hears the horn's sound at a frequency of 435 Hz and a passenger in the front hears it at 413 Hz. Find the train's speed and the horn's frequency, assuming the sound travels along the tracks. Take the speed of sound to be 343 m/s.HINT(a)the train's speed (in m/s) m/s(b)the horn's frequency (in Hz) Hz

An ambhulance blowing a siren of frequency 700Hz is travelling slowly towards vertical reflectoing wall with a speed 2m/s. The speed of sound is 350m/s. How many beats ar heard per sec to the driver of het ambluance?

A car is travelling at a constant velocity directly towards a man standing in the middle of the road.The driver sounds the car’s horn as a warning. The horn emits a sound wave of constantfrequency.The frequency of the sound heard by the man is different from the frequency of the sound emittedby the horn.Which statement is correct?A The frequency of the sound emitted by the horn is greater than the frequency of the soundheard by the man.B The frequency of the sound heard by the man depends on the distance between the car andthe man.C The sound waves continually accelerate as they move from the horn to the man.D The wavelength of the sound heard by the man is less than the wavelength of the soundemitted by the horn.

A siren, mounted on a tower, emits a sound whose frequency is 2140 Hz. A car isbeing driven away from the tower at a speed of 25.5 m s‒1, and, as the figureillustrates, the siren sound reaches the driver by two paths: sound coming directlyfrom the siren, and sound reaching the car after reflection from the building. Calculatethe frequency that the driver hears from (i) direct sound and (ii) reflected sound