Answer to Question #64440 in Physics for rabia

Question #64440

i needed to ask 2 questions real fast please cuz i dont get how to solve:
1-An open tube 34 cm long resonates in its second overtone with a tuning fork. The air temperature in the room is 15 degrees. Calculate the wavelength of the sound waves and the frequency of the tuning fork.
2-An open organ pipe has a fundamental frequency of 212 Hz at room temperature 20 degrees. What is the length of the pipe?
Please explain what i have to do for both. I am really confused. Thanks

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