1.

Two observers are stationed in two boats 4.5 km apart. A sound signal sent by one, under water, reaches the other after 3 seconds. What is the speed of sound in the water?

Answer»

Solution :DISTANCE between the two BOATS, d = 4.5 KM
d=4500m
Time, t=3 seconds
Speed of sound in the water `=("Distance travelled by sound")/("Time taken")`
`=(4500)/(3)`
`v=1500ms^(-1)`


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