A car approaching a crossing `C` at a speed of `20 m//s` sounds a horn of frequency `500 H_(Z)` when `80 m` from the crossing . Speed of sound in air is `330 m//s` . What frequency is heard by an observer (at rest) `60m` from the crossing on the straight road which crosses car road at right angles ?

A car approaching a crossing at a speed of 20 m/s sounds a horn of frequency 500Hz. when at 80m from the crossing, Speed of sound in air is 330 m/s. What freqnency is heard by an observer 60 m from the crossing on the straight road which crosses car road at right angles?

A locomotive approaching a crossing at a speed of 80 mi/h sounds a whistle of frequency 400 Hz when 1 mi from the crossing. There is no wind, and the speed of sound in air is 0.200mi/s. What frequency is heard by an observer 0.60 mi from the crossing on the straight road which crosses the railroad at right angles?

A locomotive approaching a crossing at a speed of 80 mi/h sounds a whistle of frequency 400 Hz when 1 mi from the crossing. There is no wind, and the speed of sound in air is 0.200mi/s. What frequency is heard by an observer 0.60 mi from the crossing on the straight road which crosses the railroad at right angles?

A locomotive approaching a crossing at a speed of 80 mi/h sounds a whistle of frequency 400 Hz when 1 mi from the crossing. There is no wind, and the speed of sound in air is 0.200mi/s. What frequency is heard by an observer 0.60 mi from the crossing on the straight road which crosses the railroad at right angles?

A locomotive approaching a crossing at a speed of 20 ms^(-1) sounds a whistle of frequency 640 Hz when 1 km from the crossing. There is no wind and the speed of sound in air is 330 ms^(-1) . What frequency is heard by an observer sqrt(3) km on the straight road from the crossing at right angle :-

A locomotive approaching a crossing at a speed of 20 ms^(-1) sounds a whistle of frequency 640 Hz when 1 km from the crossing. There is no wind and the speed of sound in air is 330 ms^(-1) . What frequency is heard by an observer sqrt(3) km on the straight road from the crossing at right angle :-

A train approaching a crossing at a speed of 100 km/h sounds a whistle 400 Hz when it is 1.5 km from the crossing. There is no wind and the speed of sound in air is 340 m/s. What frequency is heard by an observer 1.0 km on the strainght road from the crossing at right angles.

A train approachign a railway crossing at a speed of 120 kmh^-1 sounds a short whistle at frequency 640 Hz when it is 300 m away from the crossing. The speed of sound in air is 340 ms^-1 . What will be the frequency heard by a person standing on a road perpendicular to the track through the crossing at a distance of 400 m from the crossing ?

A train approachign a railway crossing at a speed of 120 kmh^-1 sounds a short whistle at frequency 640 Hz when it is 300 m away from the crossing. The speed of sound in air is 340 ms^-1 . What will be the frequency heard by a person standing on a road perpendicular to the track through the crossing at a distance of 400 m from the crossing ?

A train approachign a railway crossing at a speed of 120 kmh^-1 sounds a short whistle at frequency 640 Hz when it is 300 m away from the crossing. The speed of sound in air is 340 ms^-1 . What will be the frequency heard by a person standing on a road perpendicular to the track through the crossing at a distance of 400 m from the crossing ?