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[" (c) "426" to "584],[" 54.An engine ap...

[" (c) "426" to "584],[" 54.An engine approaches a hill with a constant speed."],[" When it is at a distance of "0.9km" it blows a whistle,"],[" whose echo is heard by the driver after "5s" .If speed "],[" of sound in air is "330m/s" ,the speed of engine is "]

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An engine approaches a hill with a constant speed. When it is at a distance of 0.9 km, it blows a whistle whose echo is heard by the driver after 5 seconds. If the speed of sound in air is 330 m/s, then the speed of the engine is :

An engine approaches a hill with a constant speed. When it is at a distance of 0.9 km it blows a whistle, whose echo is heard by the driver after 5 sec. If the speed ofsound in air is 330 m/s, calculate the speed of the engine.

A engine is approaching a hill at constant speed. When it is at a distance of 0.9 km , it blows a whistle, whose echo is heard by the driver after 5 s . If the speed of sound is 340 m//s , calculate the speed of the engine.

An engine approaches a hill with constant speed and where it is at a distance of 1 km blows a whistle whose echo is heard by the driver 5s. If the speed of the sound is 340 ms^(-1) . The speed of the engine is

The minimum distance to hear echo (speed of sound in air is 340 m//s )