Question

Suppose a dolphin sends out a series of clicks that are reflected back from the bottom of the ocean 80 m below. How much time elapses before the dolphin hears the echoes of the clicks? (The speed of sound in seawater is approximately 1530 m/s.)

Answer 1

Time, t = 0.104 seconds

Step-by-step explanation:

Frequency of the click of the Dolphin, f = 55.3 kHz

A dolphin sends out a series of clicks that are reflected back from the bottom of the ocean 80 m below, d = 80 m

The speed of sound in seawater is, v = 1530 m/s

Once the sound is send and reflects, the total distance covered by it is 2d such that,

`t=(2d)/(v)\\\\t=(2* 80)/(1530)\\\\t=0.104\ s`

So, the time elapses before the dolphin hears the echoes of the clicks is 0.104 seconds.