37. The wide tube, closed bottom and placed vertically, filled to the brim with water. Above the upper opening of the tube is placed sounding tuning fork oscillation frequency ν is equal to 440 Hz. Through valve located at the bottom, the water is slowly released. When the water level in the tube is reduced by ΔH = 19,5 cm fork amplified sound. To determine the speed of sound in terms υ experience.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)