A man sets his watch by a whistle that is 2 km away. How much will his watch be in error. (speed of sound in air 330 m / sec )

A man shouts loudly close to a high wall. He hears an echo. If the man is at 40 m from the wall, how long after the shout will the echo be heard? (speed of sound in air = 330 m//s )

A man sets his watch by the sound of a siren placed at a distance 1 km away . If the velocity of sound is 330 m//s

A boy riding on a bicycle going at 12 km h^-1 towards a vertical wall whistles at his dog on the ground. If the frequency of the whistle is 1600 Hz and the speed of sound in air is 330 m s^-1, find (a) the frequency of the whistle as received by the wall (b) the frequency of the reflected whistle as received by the boy.

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 :

If a thunder is heared by a man 4 seconds after the lightning is seen, how far is the lighting from the man? (Speed of sound in air = 330 m//s) .

A bullet passes past a person at a speed of 220 m s^-1 . Find the fractional change in the frequency of the whistling sound heard by the person as the bullet crosses the person. Speed of sound in air = 330 m s^-1 .

A bullet passes past a person at a speed of 220 m s^-1 . Find the fractional change in the frequency of the whistling sound heard by the person as the bullet crosses the person. Speed of sound in air = 330 m s^-1 .