Answer to Question #64438 in Physics for .

Question

hi i have a few homework questions that i dont understand. I want to know how to solve them before test. so:
1- A closed air column is 68cm long. Calculate the 3 lowest frequencies that will cause resonance at -10 degrees.

2- An organ pipe is 3.76m long. (A) determine the frequencies of the first 3 harmonics if the pipe is open at both ends. The speed of sound in air is 340 m/s. (B) Determine the frequencies of the first 3 harmonics if teh same 3.76m pipe is open at one end and closed at the other. The speed of sound in air is 340m/s.