Question

two men M and N, facing two flat and hard walls, wall 1 and wall 2.

Man N fires a gun, man M hears two echoes, one from wall 1 and second from wall 2. The speed of sound in air is given to be 325 m s–1.

After the firing of a gun by the man N, the man M will hear the first echo in​

Answer 1

Answer:

1=to 1

Step-by-step explanation:

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Answer 2

Answer:

1=1

Step-by-step explanation:

make as brain list

c character r h m m m answer is 1