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I was reading a textbook. I found that it was mentioned the speed of sound increases with increase in temperature. But sound is a mechanical wave, and it travels faster when molecules are closer. But an increase in temperature will draw molecules away from each other, and then accordingly the speed of sound should be slower.
Figure 17.3.1:The mass of a fluid in a volume is equal to the density times the volume, m = ρV = ρAx. The mass flow rate is the time derivative of the mass. Now consider a sound wave moving through a parcel of air. A parcel of air is a small volume of air with imaginary boundaries (Figure 17.3.5).
Aug 4, 2015 · Temperature affects the speed of sound by changing the density of the medium in which a sound wave travels. In most cases, when the temperature of a medium increases so does the speed of sound through that medium. Sound waves require a medium in order to travel. A medium can be a solid, liquid, or a gas such as air.
Temperature isn’t the only thing that affects the speed of sound. For instance, humidity also has an impact. By making air less dense, low humidity helps sound waves move faster. Air pressure can also make a difference. The next time you’re looking for a fun outdoor activity, try experimenting with sound. Note the air temperature, and then ...
The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. More simply, the speed of sound is how fast vibrations travel. At 20 °C (68 °F), the speed of sound in air is about 343 m/s (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or 1 km in 2.91 s or one mile in 4.69 s.
The speed of sound in room temperature air is 346 meters per second. This is faster than 331 meters per second, which is the speed of sound in air at freezing temperatures. The formula to find the speed of sound in air is as follows: v is the speed of sound and T is the temperature of the air. One thing to keep in mind is that this formula ...
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Table 17.2.1 17.2. 1 makes it apparent that the speed of sound varies greatly in different media. The speed of sound in a medium is determined by a combination of the medium’s rigidity (or compressibility in gases) and its density. The more rigid (or less compressible) the medium, the faster the speed of sound.
