2. Calculate the frequency of a sound wave, in air, at a room temperature of 22°C...
What frequency would you need to produce a sound wave in room-temperature air with a wavelength of 4m? _______ Hz
What is the wavelength in air, of a sound wave of frequency 2200Hz? The temperature is 0 degree Celsius.
The speed of sound in room temperature (20?C) air is 343 m/s; in room temperature helium, it is 1010 m/s. The fundamental frequency of an open-closed tube is325Hz when the tube is filled with air. What is the fundamental frequency if the air is replaced with helium?
2. The speed of sound in air at room temperature is 344 m/s. a) Determine the wavelength of a sound with a frequency of 287 Hz b) Determine the frequency of a sound with a wavelength of 0.85 m.
14.1 The speed of sound in a room is 352 m/s. a) What is the temperature of the air in the room? b) If the wavelength of a sound wave is 2.65 m, what is the frequency of the sound?
A sound wave has a frequency of 704 Hz in air and a wavelength of 0.55 m. What is the temperature of the air? Assume the velocity of sound at 0◦C is 330 m/s. Answer in units of ◦C.
A sound wave has a frequency of 680 Hz in air and a wavelength of 0.48 m. What is the temperature of the air? Assume the velocity of sound at 0◦C is 330 m/s. Answer in units of ◦C.
2. A sound wave in air has a frequency of 510 Hz and a wavelength of 0.68 m. What is the air temperature? a 18°C c. 15°C d. 27°C e. 8°C 3. What is the intensity of a sound with a measured intensity level of 83 dB? (lo a. 8.4*10 W/m2 b. 2.0*104 W/m2 c. 1.3*10-5 W/m2 d. 7.4*104 W/m2 e. 0.4*103 W/m2 1012 W/m2)
8. A sound wave propagates in air at 27°C with frequency 4.00 kHz. It passes through a region where the temperature gradually changes and then moves through air at 0°C. Give numerical answers to the fol- lowing questions to the extent possible and state your reasoning about what happens to the wave physically. (a) What happens to the speed of the wave? (b) What happens to its frequency? (c) What happens to its wavelength? Figure P17.7
1. Find the angular frequency of a 300Hz sound wave travelling in air. 2. Find the wavelength of a 300Hz sound wave travelling in air. Use the speed of sound in air = 340m/s.