The trombone's low B2b, 116.5 Hz, is played with the slide in first position (see Figure). What is its effective length in meters -- that is, the length of an idealized closed tube with the same second-mode frequency?estimate how far the slide should be moved, in cm, to reach the second position in order to play A2, 110 Hz. Note that each cm of slide motion adds 2 cm to the tube length