Please Explain In detail Show all steps explain concepts and

Please Explain In detail. Show all steps, explain concepts and thought process. I need help understanding whats going on.

Solve A->B . I dont know where the answers came from

Please explain well. I will rate 5

Solution

Temprature t = 21 ^o C

Speed of sound at 21 ^o C is V = 343.8 m/s

succesive frequencies f = 246 Hz

and f \' = 287 Hz

So, fundamental frequency F = f \' - f

                                           = 287 Hz - 246 Hz

                                           = 41 Hz

We know F = V / 2L

From this length of the pipe L = V / 2F

                                           = 343.8 /(2 x41)

                                           = 4.192 m

                                           = 4.2 m