Question: A trombone has a variable length. When a musician blows into the mouthpiece and causes air in the tube of the horn to vibrate, the

A trombone has a variable length. When a musician blows into the mouthpiece and causes air in the tube of the horn to vibrate, the waves set up by the vibrations reflect back and forth in the horn to create standing waves.
As the length of the horn is made shorter, what happens to the frequency? Assume that the same harmonic is excited.
The frequency remains the same.
The frequency increases.
The frequency decreases.
The frequency increases or decreases depending on how hard the horn player blows.
The frequency increases or decreases depending on the diameter of the horn.
A trombone has a variable length. When a musician

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