Consider an open pipe that is $90$ cm long.

What is the fundamental frequency?

f$1=[$ Select $]["191","185","202","213"]$ Hz

What happens to the frequency when you extend the pipe to $110$cm$?$

$[$ Select $]["$The frequency increases", "The frequency stays the same", "The frequency decreases"$]$

What happens to the frequency you hear when you double the diameter of the pipe?$($You can assume the diameter is very small in comparison to the length$)$

$[$ Select $]["$The frequency stays almost the same", "The frequency increases"$]$

In the winter it gets cold in Madison. $$Does the pitch you hear from the pipe increase, decrease, or stay the same as it gets colder compared to the pitch you hear when the pipe is warm?

$[$ Select $]["$The pitch decreases", "The pitch stays the same", "The pitch increases"$]$