Question

A dolphin makes a clicking sound and detects
the echo from the fish that is 250m away. How long was it
before it heard the echo?

Answer 1

Answer:

I really like dolphin sound

Answer 2

Given: A dolphin makes a clicking sound and detects the echo from the fish that is 250m away

To find: Time taken in hearing the echo

Explanation: When a dolphin makes a clicking sound, it travels through water, reaches the fish and then returns back to the dolphin to determine the fish's position.

Distance of the fish from dolphin= 250 m

The sound travels from dolphin to fish and then again from fish to dolphin.

Total distance= 250*2 m

= 500 m

Speed of sound in water= 1500 m/s

Time taken for the echo to reach the dolphin

= Total distance travelled by sound/ Speed of sound in water

= 500/1500

= 1/3

= 0.33 seconds

Therefore, it takes 0.33 seconds for the dolphin to hear the echo.