In this example, sound waves are created in a tube. The tube is partially filled with water and the level of water is adjusted in the tube until there is a standing wave. Draw the lowest frequency standing wave for the two water levels in the drawing. The drawing has two tubes. One is 3/4 full and the other is 1/4 of the way full.

Question

In this example, sound waves are created in a tube.  The tube is partially filled with water and the level of water is adjusted in the tube until there is a standing wave.  Draw the lowest frequency standing wave for the two water levels in the drawing.  The drawing has two tubes. One is 3/4 full and the other is 1/4 of the way full.

A 320 Hz tuning fork to generate sound waves.  The tube has a length of 1m.  Taking the speed of sound to be 343 m/s, find the two heights of the water int the tube that will produce a standing wave.