is used to measure the distance and speed of under water objects. This method is known as SONAR.Working of a stethoscope is also based on reflection sound.The sound of the patients heartbeat reaches the doctor ears by multiple.
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GabOuano
Um krizellhanapin503 you're answer i think that's wrong because it's to far the question
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Answer:
is used to measure the distance and speed of under water objects. This method is known as SONAR.Working of a stethoscope is also based on reflection sound.The sound of the patients heartbeat reaches the doctor ears by multiple.