Question

a submarine emits a solar pulse which returnes from an under water different in 0.02 if the speed of sound is salt water is the diff

Answer 1

⇘ All you gotta do is ⇙

→ total distance = speed * time ←

in this case, we need one way distance,

so, distance = speed * time / 2

                      = 1.02 * 1531 / 2

                      = 1561.62 / 2

                    →  =  780.81 meters ←

-ғʀᴏᴍ ᴍᴇʟɪx

Answer 2

$\large\mathfrak\green{Answer-}$

→Time (t) taken by the sonar pulse to return = 1.02 s

→Speed (v) of sound in salt water = 1531 m s-1

→Distance travelled by sonar pulse = Speed of sound × Time taken

•Distance travelled by sonar pulse = Speed of sound × Time taken=> 1531 x 1.02 = 1561.62 m

→Distance of the cliff from the submarine = (Total distance travelled by sonar pulse) / 2

=> 1561.62 / 2

=> 780.81 m.