give examples for time of echo
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Example: A person is in between two vertical mountains. The person fires a gun then hears the first echo from the nearby mountain in a time 3 s and hears second echo from far mountain in a time 4 s. The person hears the third echo after how long? so,time of third echo is 7 seconds.
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Example: A person is in between two vertical mountains. The person fires a gun then hears the first echo from the nearby mountain in a time 3 s and hears second echo from far mountain in a time 4 s. The person hears the third echo after how long? so,time of third echo is 7 seconds.
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