5. On a day when the speed of sound in air is 345 m/s, the fundamental frequency of an open-ended organ pipe is 690 Hz. If the second harmonic of this pipe has the same wavelength as the second overtone (third harmonic) of a closed-end pipe, what is the length of each pipe?

8 A 1.0 m1.0 m long pipe held vertically is inserted into a tank of water. This creates an open-closed pipe whose length can be easily varied. When a tuning fork is held at the open end and the pipe is slowly pulled out of the water, resonances are observed when the top of the pipe is 16 cm and 48 cm above the top surface of the water, and no resonances are observed in between. What is the frequency of the tuning fork? Use 340 m/s for the speed of sound. 240 Hz 530 Hz 610 Hz 710 Hz 850 Hz Correct.

5) What tension is needed to make a 1.2m long string resonate at its fourth harmonic with a frequency of 240Hz? The linear density of the string is 1.55 g/m .

A pipe of length A has two open ends. Another pipe of length B has one open end and one closed end. The frequency of the first harmonic of both pipes is the same. What is (A/B)?

10.) see photo for details