The sound from a source travelled to the bo..

Question 1 Report

The sound from a source travelled to the bottom of the sea and the echo was heard 4s later. If the speed of sound in sea water is 1500ms-1 the depth of the sea is

6000m

3000m

1500m

375m

Answer Details

t = 4s ; v = 150ms-1

depth = X ; but 2X = vt

X = $\frac{v t}{2}$ = $\frac{1500 \times 4}{2}$

X = 3000m

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The sound from a source travelled to the bottom of the sea and the echo was heard 4s later. If the speed of sound in sea water is 1500ms-1 the depth of the ...