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A ship on the surface of water sends ultrasonic wavesand receives them back from a submarine inside thewater after 5 seconds. What is the distance ofSubmarine from the ship? speed of sound in wateris 1400 ms. |
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Answer» Answer: 3500 m. Explanation: As the ULTRASONIC WAVES come back after 5 seconds, they will REACH the submarine after 2.5 seconds when emitted. Thus , the time is 2.5 second, the speed is 1400 m/s , so the DISTANCE will be : speed ×time = 1400× 2.5 = 3500 m |
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