5. A sonar apparatus in a ship sends out a signal vertically downwards. The signal returns after 1.6 s. Find the depth of the sea. The velocity of sound in water = 1500 m/s .
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Answer:
4800m
Explanation:
velocity of sound = 1500m/s
time= 2t
depth= velocity of sound*2t
1500*2*1.6= 4800m
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