A dolphin in 25 degrees c sea water emits a sound directed
A dolphin in 25 degrees C sea water emits a sound directed toward the bottom of the ocean 213 m below. How much time passes before it hears an echo? The speed of sound in sea water is 1530 m/s.
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a 450 kg penguin runs onto a huge horizontal sheet of frictionless ice the sheet lies on the xy-plane at t 0 s it is
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a dolphin in 25 degrees c sea water emits a sound directed toward the bottom of the ocean 213 m below how much time
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