An organ makes notes by sending air through a collection of pipes that are open at one end and closed at the other. What is the lowest frequency of sound generated by a pipe with length $10\,\text{m}$? (The speed of sound in the pipe is $320\,\text{m s}^{-1}$.)
- A$4\,\text{Hz}$
- B$8\,\text{Hz}$
- C$16\,\text{Hz}$
- D$32\,\text{Hz}$