Question

Afishing boat using sonar detects a
shoal of fish 190 meters below it. How
much time elapsed between sending
the ultrasonic signal which detected
the fish and receiving the signal's echo?
(Speed of sound in seawater = 1520 m/s)
is
a) 0.5 s
b)0.25s
c)1.25 s
d)1s​

Answer 1

Answer:

0.25

Explanation:

2*distance=speed *time

2*190=1520*t

380/1520=t

t=0.25