A room contains air at 30°C, in which the speed of sound is 349 m/s. The...
A room contains air in which the speed of sound is 343 m/s. The walls of the room are made of concrete, in which the speed of sound is 1850 m/s. (a) Find the critical angle for total internal reflection of sound at the concrete-air boundary. ° (b) In which medium must the sound be traveling in order to undergo total internal reflection? air concrete (c) "A bare concrete wall is a highly efficient mirror for sound." Give evidence for...
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.
1. (28 Points) Symphony halls are designed to reduce the number of locations that produce intensity minima from reflections by the wall. In this problem you are asked to compute the frequencies that produce intensity minima if the room has bare concrete walls. Imagine a source of sound (S) that is played at the front stage of a symphony hall. A listener (L) is standing next to the cheap seats at the back of the hall. For simplicity let's assume...
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?
Question 2 12 pts The speed of sound in air is 343 m/s, while the speed of sound in water is 1,446 m/s. a) If the frequency of a sound wave is 300 Hz while traveling in water, what is the wavelength of the sound wave? b) If the wave length of a sound wave traveling in air is 3 m, what is the frequency of the sound wave and is it audible to human beings? c) A sound wave...
At room temperature, sound travels at a speed of about 344 m/s in air. You see a distant flash of lightning and hear the thunder arrive 7.8 seconds later. How many miles away was the lightning strike? (Assume the light takes essentially no time to reach you.)
The speed of sound through air at room temperature and standard pressure is about 343 m/s. One cue the human hearing system uses to localize sound is the slight difference in the arrival times at the two ears of the sound emanating from a source. Ears are spaced about 20cm apart. Consider a person facing the positive x-direction and a source located 5 m away at an angle of 45° below the positive x-direction. What is the difference in arrival...
A flutist assembles her flute in a room where the speed of sound is 342 m/s . When she plays the note A, it is in perfect tune with a 440 Hz tuning fork. After a few minutes, the air inside her flute has warmed to where the speed of sound is 343 m/s. How many beats per second will she hear if she now plays the note A as the tuning fork is sounded? How far does she need...
Find the speed of sound in air at 0 degree C (1100ft/s) in m/s and mph