(Solved): 3) Consider a pipe A which is 1.2m long and open at both ends. It is oscillating in its second lo ...

3) Consider a pipe A which is $$1.2\mathrm{m}$$ long and open at both ends. It is oscillating in its second lowest harmonic frequency. Another pipe $$B$$, which is closed at one end, oscillates as well at its second lowest harmonic frequency. The frequencies of pipes $$A$$ and $$B$$ happen to match. The speed of sound inside the pipes is $$343\mathrm{m}/\mathrm{s}$$. a) If an $$x$$ axis extends along the interior of pipe $$A$$, with $$x=0$$ at one end, where along the axis are the displacement nodes? b) How long is pipe $$B$$ ? c) What is the lowest harmonic frequency of pipe A?