Question

The speed of sound in water is 1500 ms–1 and in steel is 5000 ms–1
(i) Find the distance travelled by sound signal in 3 seconds in steel.
(ii) Find the time taken by sound signal to travel the same distance in water.

Answer 1

Sound travels 15 Km in steel in 3 seconds.

Sound travels 15 Km in water in 10 seconds.

Explanation:

Speed of sound in water is 1500 ms–1

Speed of sound in steel is 5000 ms–1

(i) Time = 3 seconds

Distance travelled in steel = Speed in steel * time = 5000 * 3 = 15000 m = 15 Km

Sound travels 15 Km in steel in 3 seconds.

(ii) Speed in water = 1500 ms-1; Distance = 15000

Time = Distance / speed = 15000 / 1500 = 10 seconds

Time taken for sound to travel the same distance in water = 10 seconds.