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In Physics

Electricity. Sound, whether in air, water or a solid such as steel, is a compression wave that moves atoms back and forth. It is slow. In air, the speed of sound is 343 mete…rs per second (1,126 ft/s), or 1,236 kilometers per hour (768 mph). It takes 3 seconds to travel one kilometer or 5 seconds to travel one mile. It is 4 times faster than that in water and almost 15 times faster in iron. Electricity involves the motion of electrons, very small and light with a significant long range Coulomb force between them. Electricity can be pictured as moving electrons which push against their neighboring electrons that in turn push against more distant neighboring electrons and this all continues for distances much much greater than the region occupied by a single electron. In some ways, this propagation by pushing against the neighbors is basically similar for both electricity and sound. But, for electricity the masses of the moving electrons are much much smaller than the masses of atoms and forces on electrons are longer ranged and strong. Electrical disturbances on a conductor travel at almost the speed of light, but depends on the geometry of the conductor. For normal wires and normal electrical current such as used by people in everyday life, the speed can be over 95% of the speed of light. The speed of light is 300,000 kilometers per second. For other arrangements of conductors (waveguides) it can be much slower and a speed of 200,000 kilometers per second would not be surprising. One is not far off if one says that the speed of light is 1 million times faster than the speed of sound. (MORE)

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Distance, pitch, volume, and temperature. You may not think temperature, but it does play a major role. When it is cold, particles in the air get closer together and form a so…rt of barrier. The sound waves then have to break through the barrier. When it is hotter, it's easier for sound to travel because the particles are more spread out with the heat. I hope this helped :) (MORE)

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Sound travels at different speeds depending on the medium. Sound will travel the fastest through solids.

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Anything that travels faster than 330 m/s (720 mph) at sea level. Objects that break this speed are termed "Supersonic". In liquids and solid materials sound travels much f…aster than through gases (air). The density of the material and it's restitution coefficient are contributing factors to the speed of sound. Some examples: Rubber | 60 m/s / Air at 40oC | 355 m/s / Air at 20oC | 343 m/s / Lead | 1210 m/s / Gold | 3240 m/s / Glass | 4540 m/s / Copper | 4600 m/s / Aluminum | 6320 m/s (MORE)

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The speed of sound is the velocity of sound through a mechanical (elastic) medium (such as air, water, concrete, etc.). It will vary as the medium through which it travels va…ries. In general, the speed of sound is faster in liquids and even faster in solids. In air, the speed of sound has little to do with the atmospheric pressure "at sea level" or with the humidity, but the temperature is very important. Therefore we can set aside questions of altitude and humidity. The speed of sound in air is 343 m/s or 1126.547 ft/s (768.095 mph) at a temperature of 20Â°C or 68Â°F The air pressure and the air density are proportional to each other at the same temperature. Scroll down to related links and read the short article "Speed of sound - temperature matters, not air pressure" and "Calculation of the speed of sound". The speed of sound at sea level is equal to 340.29 metres per second. 343 meters/second (1,125 ft/s) or 1,236 kilometers/hour (768 mph). This speed is variable, dependent on the air density (elevation), temperature, and humidity. Notice: The speed of sound changes with temperature and a little bit with humidity â but not with air pressure (atmospheric pressure). The words "sound pressure at sea level" are incorrect and misleading. The temperature indication, however, is absolutely necessary. The speed of sound at 20 degrees Celsius (68 degrees Fahrenheit) is 343 meters per second. Speed of sound is 331m/s in Air Medium. It varies from medium to medium. It is highest in some crystals. 340.29 m / s speed of sound at sea level = 340.29 m/s It is hard to be too precise as the speed of sound is affected by humidity. Over land the speed of sound is 331.3 m/s but slightly higher when the air is wet. Generally, the difference in seconds between the lightning and the sound of thunder is divided by 3 to get the distance of the lightning strike in kilometres. (MORE)

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In Astronomy

speed of sound: how fast sound travels speed of light: how fast light travels The speed of sound is much slower than light - about 1 million times slower. Ligh…t travels at 3 x 10^8 m/s, while sound travels at 330m/sec. (MORE)

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In Physics

The Concorde flew at Mach 2. This means it flew two times more than the speed of sound. It was the fastest passenger aircraft ever built.

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In Physics

speed of sound depends upon:- 1.temperature 2.molecular wieght 3.heat capacity At a constant temperature, the ideal gas pressure has no effect on the speed of sound, becau…se pressure and density (also proportional to pressure) have equal but opposite effects on the speed of sound, and the two contributions cancel out exactly. In a similar way, compression waves in solids depend both on compressibility and density-just as in liquids-but in gases the density contributes to the compressibility in such a way that some part of each attribute factors out, leaving only a dependence on temperature, molecular weight, and heat capacity . (MORE)

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In Physics

It is an amazing fact that the speed of sound in air is essentially a function of temperature only. Even very large pressure changes produce only very small changes in the spe…ed of sound. The speed of sound in air is largely independent the sound amplitude, frequency or wavelength. Though air pressure does not affect the speed of sound, there is a small dependence on humidity, because humidity makes a small change in average air density. By far the largest dependence of sound speed is on temperature and speed changes with altitude are primarily caused by the change in temperature with altitude. See related links. (MORE)

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20c + 5 = 5c + 65 Divide through by 5: 4c + 1 = c + 13 Subtract c from both sides: 3c + 1 = 13 Subtract 1 from both sides: 3c = 12 Divide both sides by 3: c = 4 20c + 5 = 5c …+65 20c - 5c= 65 - 5.
15c = 60.
15c/15 = 60/15.
c = 4 (alternative method). (MORE)