how is echo in a halls prevented? the sound of explosion on the surface of lake is heard by a boatman 100m away and a diver 100m below the point of explosions.of the two persons mentioned (boatma and diver) who would hear the sound first?
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The sound of an explosion on the surface of a lake is heard by a man 150m away and by a driver 150m below the point of explosion. Answer the following: (a)Explain who will hear the sound of explosion first. (b)If sound takes t sec. to reach the man ,how much time will it take to reach the driver(speed of sound in air is 344m/s and in water 1533m/s)? (c)Give the audible range for the man.
The sound of an explosion on the surface of a lake is heard by a man 150m away and by a driver 150m below the point of explosion. Answer the following: (a)Explain who will hear the sound of explosion first. (b)If sound takes t sec. to reach the man ,how much time will it take to reach the driver(speed of sound in air is 344m/s and in water 1533m/s)? (c)Give the audible range for the man.
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