Home
Class 11
PHYSICS
Two electric trains run at the same spee...

Two electric trains run at the same speed of `72 km h^-1` along the same track and in the same direction with a separation of 2.4 kin between them. The two trains simultaneously sound brief whistles. A person is situated at a perpendicular distance of 500 m from the track and is equidistant from the two trains at the instant of the whistling. If both the whistles were at 500 Hz and the speed of sound in air is `340 m s^-1`, find the frequencies heard by the person.

Promotional Banner

Similar Questions

Explore conceptually related problems

A train is moving with a uniform speed of 33 m/s and an observer is approaching the train with the same speed. If the train blows a whistle of frequency 1000 Hz and the velocity of sound is 333 m/s, then the apparent frequency of the sound that the observer hears is

Two trains run at the same speed v = 90 km//h along a strainght track one after the other with a separation l = 2 km . At the instant when they are located symmetrically relative to the point A at a distance b = 1 km form the track, both emit a brief signal of frequency n = 500 Hz . What will be the nature of the sound at A? The speed of sound is V = 350 m//s

A train is moving with a uniform speed of 33 m//s and an observer is approaching the train with the same speed. If the train blows a whistle of frequency 1000 Hz and the velocity of sound is 333 m//s then the apparent frequency of the sound that the observer hears is

two trains move towards each other sith the same speed. The speed of sound is 340 m/s. If the height of the tone of the whistle of one of them heard on the other changes

A train approaching a hill at a speed of 60 km//hour sounds a whistle of frequency 600Hz when it is distance of 1km from the hill. Wind is blowing in the direction of the train with a speed of 60 km//h Find the frequency of the whistle heard by an observer on the hill:speed of sound in air 1200km/h)