2a) A certain pipe has a fundamental frequency of 234 Hz. Using 343 m/s as the speed of sound, what must the length of this pipe be, assuming it is an open resonator?  b) What would be the length if it were a closed resonator?

A guitar string is 0.9 m long with a mass of 0.0036 kg. The string is under 520 N of tension. a) What is the fundamental frequency of the string? b) What would be the fundamental frequency of the string it you doubled the tension?

.  A bat sends of a sound wave 100 kHz and the sound waves travel through air at a speed of v=343m/s.�=343m/s. (a) If the maximum pressure difference is 1.30 Pa, what is a wave function that would model the sound wave, assuming the wave is sinusoidal? (Assume the phase shift is zero.) (b) What are the period and wavelength of the sound wave?

A harpsichord string of length 1.50 m and linear mass density 25.0 mg/m vibrates at a fundamental frequency of 447.0 Hz. A) What is the speed of the transverse string waves? in m/s B) What is the tension? in N  C) What is the wavelength of the sound wave in air produced by the vibration of the string? (The speed of sound in air at room temperature is 343 m/s.) in m D)  What is the frequency of the sound wave in air produced by the vibration of the string? (The speed of sound in air at room temperature is 343 m/s. in Hz

9) It is a hot summer day. The temperature is 35 °∁ . A car is traveling at 18.846 km/hour honking it 1000Hz horn.a) What is the speed of sound at that temperature?b) The car is traveling towards you. What is the frequency you hear?c) The car is traveling away from you. What is the frequency you hear?

(a) At T=12oC, how long must an open organ pipe be to have a fundamental frequency of 300 Hz? (b) If this pipe is instead filled with helium at 20oC , what is its fundamental frequency?