Dolphins can use sonar to detect objects in the sea. How far away is the object from the dolphin if the sonar takes .02 sec to be returned? Sound travels at 1484 m/s in sea water. 60 m 30 m 15 m 7.5 m

X A 200 KHz wave travels at 200 m/s. What is its wavelength? * 0.001 m 0.0165 mm 0.01 m 1 m

Current Attempt in Progress (a) Neil A. Armstrong was the first person to walk on the moon. The distance between the earth and the moon is 3.85 x 108 m. Find the time it took for his voice to reach the earth via radio waves. (b) Someday a person will walk on Mars, which is 5.60 × 1010 m from the earth at the point of closest approach. Determine the minimum time that will be required for a message from Mars to reach the earth via radio waves. (a) Number i Units (b) Number i Units

A dolphin uses echo location to track a fish in the ocean. The speed of sound in the ocean is 1470 m/sec and it takes 0.500 seconds for the sound wave to echo back to the dolphin. How far away is the fish?

An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that travel 1530 m/s in seawater. How deep is the water directly below the vessel if the time delay of the echo to the ocean floor and back is  8 s?

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