Answered

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The image shows a ship using sonar to detect underwater objects.
What two pieces of information must you have in order to calculate the
distance to an underwater object?
A. The wavelength of the sound waves
B. How long the sound waves take to reach and return from the
object
C. The speed of the sound waves in air
D. The speed the sound waves travel in water

Sagot :

Answer: i think it is a/d

Explanation:

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