Question

9) An observer sitting in line of two tanks, watches the
flashes of two tanks firing at each other at the same time,
but he hears the sounds of two shots 2 s and 3.5 s after
seeing the flashes. If distance between the two tanks is
510 m, find the speed of sound.

10) How long will sound take to travel in (a) an iron
rail and (b) air, both 3.3 km in length ? Take speed
of sound in air to be 330 m s-1 and in iron to be
5280 m s-1

11. Assuming the speed of sound in air equal to
340 m s- and in water equal to 1360 m s-1,
find the time taken to travel a distance 1700 m by sound
in (i) air and (ii) water.

This is my question please now answer it. these are physics numericals and please follow me.​

Answer 1

Answer:

for 9)- answer will be 340m/s

10)- answers are (a) in air=10s and in iron is 0.625s

11) answer will be in air=5s and in water =1.25s

Explanation:

just divide the distance by the average time in respective medium

an din other two questions divide distance by the average speed.