Balboa Park in San Diego has an outdoor organ. When the air ...

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Balboa Park in San Diego has an outdoor organ. When the air temperature increases, the fundamental frequency of one of the organ pipes (the thermal expansion of the pipe is negligible)<--EndFragment--> runs
  1.increases.
  2.decreases.
  3.stays the same.
  4.is impossible to determine.

Question 2

A pipe open at both ends resonates at a fundamental frequency fopen. When one end is covered and the pipe is again made to resonate, the fundamental frequency is fclosed. Which of the following expressions describes how these two resonant frequencies compare?
  1. fclosed = fopen
  2. fclosed = 3/2 fopen
  3. fclosed = 2fopen
  4. fclosed = 1/2 fopen
  5.none of these

[succesfull]

Answer to Question 1

1

Answer to Question 2

4