Question

a girl claps and hears the Echo after reflection which is 990m away.If the velocity of sound is 330m/sec.Calculate the time taken ​

Answer 1

Answer:

6sec

Explanation:

distance =990m

speed=330m/s

speed=distance/time

so,time=distance/speed

time=990/330

time=3sec

as she hears the echo after reflection the time will be 2 times

so 3×2=6sec

Answer 2

Answer:

here is your answer

hope it helps you