A pipe closed at one end is 100cm long. If the air in the pipe is set into vibration and a fundamental note is produced, calculate the frequency of the note: (velocity on sound=340m/s)

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= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation