5. A resonant standing wave of sound is set up in a graduated cylinder filled to specific levels with water. The cylinder acts as a half open air column. It is determined that the two smallest amounts of space (ignoring end correction) that support standing waves are 17 cm and 51 cm. If the Tuning fork being used to produce the sound has a frequency of 512 Hz, what is the temperature of the air? (hint: the answer is not unrealistic.) (3)