Question

A navigation buoy floating on the sea oscillates up and down like a wave. In exactly two minutes, six complete wavelengths pass the buoy. What is the frequency of the waves?

and

A ship uses pulses of sound to measure the depth of the sea beneath the ship. A sound pulse is transmitted into the sea and the echo from the sea-bed is received after 54 ms. The speed of sound in seawater is 1500 m / s.Calculate the depth of the sea beneath the ship.

Answer 1

Answer:

1) 0.05Hz

Explanation:

1)frequency = speed divided by wavelength

time is 2 X 60 = 120 seconds.

distance = 6 wavelength

speed= distance divided by time

speed = 6 wavelength divided by 120

Answer 2

Answer:

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