Question

the man standing 25 m away from the wall produces a sound and receive the reflected sound calculate the time after which after which he receives the reflected sound if the speed of the sound is 350ms -1

Answer 1

Answer:

time = 0.142seconds

Explanation:

the sound travels to the wall and then returns back so,

distance = 2d = 2 x 25= 50m

speed=350m/s

time = distance / speed = 50 / 350 =1/7 = 0.142 sec