A trombone (Fig. P13.44) acts as a pipe that is closed at one end (the mouthpiece, where the player blows) and open at the other end (the bell of the instrument). 

(a) Is the lowest note played with the slide pulled as far as possible toward the player or when the slide is pushed out as far as possible? 

(b) What is the approximate frequency of the lowest note that can be played with the trombone in Figure P13.44?

Figure P13.44