. The ultrasonic waves take 4 seconds to travel from the ship to the bottom of the sea
and back to the ship. What is the depth of the sea?
(Speed of sound in water = 1500 m/s.)
(a)3km (b) 6km
(c) 300m
(d) 30km
Answers
Answered by
2
Answer:
i think it is 300m (c)
Explanation:
i think it
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