Question

a person who is standing at a point x between two parallel walls fires starting piatal. he hears the first echo after 0.6s and another on after 0.8sec. how long after firing the pistal will he hear the next echo​

Answer 1

Answer:

Break up the 2 echoes into 2 parts.

• Part 1: using the formula 2d=vt, where v= the speed of sound, 330m/s, t= time taken and d = distance, plug in the given values into the formula and you get d= 330m. Part 1 is done!
• Part 2 : do the same for this, see the above. ( you'll get d= 660m)