Two engines pass each other moving in opposite directions with uniform speed of of them is blowing a whistle of frequency 540 Hz. Calculate the frequency heard by driver of second engine before they pass each other. Speed of sound is 300 m/sec :

Two engines pass each other moving in opposite directions with uniform speed of 30m/so .one of them is blowing a whistle of frequency 540 Hz. Calculate the frequency heard by driver of second engine before they pass each other. Speed of sound is 300 m/sec :

Two engines pass each other in opposite directions with a velocity of 60 kmh^-1 each. One of them is emitting a note of frequency 540. Calculate the frequencies heard in the other engine before and after they have passed each other. Given velocity of sound = 316.67 ms^-1 .

A train is moving with speed 72 km/h towards a hill blows a whistle of frequency 1240Hz. the frequency of echo heard by driver is(speed of sound=330m/s)

A train is moving with speed 72 km/h towards a hill blows a whistle of frequency 1240Hz. the frequency of echo heard by driver is(speed of sound=330m/s)

An engine is moving on a circular track with a constant speed. It is blowing a whistle of frequency 500 Hz . The frequency received by an observer standing stationary at the centre of the track is

A train is approaching towards a platform with a speed of 10 m s^(-1) while blowing a whistle of frequency 340 Hz. What is the frequency of whistle heard by a stationary observer on the platform ? Given speed of sound = 340 ms^(-1) .

A train is approaching towards a platform with a speed of 10 ms^(-1) , while blowing a whistle of frequency 340 Hz. What is the frequency of whistle heard by a stationary observer on the platform ? (given, speed of sound =340 ms^(-1) )

One engine moves with a speed 10 m/s towards a cliff (high hill). It blows a whistle with frequency 660 Hz. Find the frequency of an echo (from cliff), heard by driver of this engine. Speed of sound in air is 340 m/s.