A standing wave is generated in an air column  closed at one end by a source that has a  frequency of 768 Hz. The speed of sound in  air is 325 m/s. What is the shortest column for  which resonance will occur?

A cable with a linear density of u = 0.210 kg/m is hung from telephone poles. The tension in the cable is 550.00 N. The distance between poles is 24 meters. The wind blows across the line, çausing the cable resonate. A standing waves pattern is produced that has 3.0 wavelengthš between the two poles. The air temperature is T'= 24°C. What are the frequency and wavelength of the hum? A =

a vocal tract acts as an air column closed at one end. The vocal tract of a singer is 25.0cm long and its vibrating in the second overtone (3rd resonant length). if the speed of sound is 352 m/s, what frequency is the singer producing?

A phone cord is 4.89 m long. The cord has a mass of 0.212 kg. A transverse wave pulse is produced by plucking one end of the taut cord. That pulse makes four round trips (down and back) along the cord in 0.666 s. What is the tension in the cord? Hint: Four round trips is a total distance of eight lengths of the cord.