Guys you have to remember here that those equations are for DC only, all utility power supplies are AC. Plus you need to note the fact that transmission lines are run at voltages far greater than 120/240V, typically high tension lines run at kV range, eg 44,000 kV and higher. That way you loose far less power to impedance (this is a complex impedance, V=IR,etc... is for ideal DC only)
Close but not quite correct, the ideal gas laws are only held true for a theoretical "ideal" gas, i.e. it doesn't exist but the relationship does hold to a certain extend. Although the equations only hold for a fixed or know volume: PV=nRT
How does this relate to the speed of sound? Well the speed of sound in any material is relational to the abilitiy of the material to conduct compression waves.
For example in the cowboy movies the hero puts his ear to the train trak to hear the approaching train, why? because the steel is denser and a better conductor of compression waves than the surrounding air, therefore you can hear the train when you press your ear to the track yet no hear it normally.
In aviation terms speed is generally measured on two scales: ground speed and apparent air speed. Gorund speed is the amount of "ground" being cover and is constant with altitude when the velocity of the vehicle is constant. Apparent air speed is the speed of the aircraft relative to the air immediately outside the vehicle.
The day most often quoted as the begining of radio is December 12, 1901. On this day at the 12th hour Marconi received the first transatlantic transmission and is celebrated widely as the birth of radio proper. Read more here http://www.ucs.mun.ca/~jcraig/marconi.html and here http://www.britannica.com/bcom/eb/article/0/0,5716,63990+1+62410,00.html?query=radio
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Guys you have to remember here that those equations are for DC only, all utility power supplies are AC. Plus you need to note the fact that transmission lines are run at voltages far greater than 120/240V, typically high tension lines run at kV range, eg 44,000 kV and higher. That way you loose far less power to impedance (this is a complex impedance, V=IR,etc... is for ideal DC only)
Close but not quite correct, the ideal gas laws are only held true for a theoretical "ideal" gas, i.e. it doesn't exist but the relationship does hold to a certain extend. Although the equations only hold for a fixed or know volume: PV=nRT How does this relate to the speed of sound? Well the speed of sound in any material is relational to the abilitiy of the material to conduct compression waves. For example in the cowboy movies the hero puts his ear to the train trak to hear the approaching train, why? because the steel is denser and a better conductor of compression waves than the surrounding air, therefore you can hear the train when you press your ear to the track yet no hear it normally. In aviation terms speed is generally measured on two scales: ground speed and apparent air speed. Gorund speed is the amount of "ground" being cover and is constant with altitude when the velocity of the vehicle is constant. Apparent air speed is the speed of the aircraft relative to the air immediately outside the vehicle.
The day most often quoted as the begining of radio is December 12, 1901. On this day at the 12th hour Marconi received the first transatlantic transmission and is celebrated widely as the birth of radio proper. Read more here http://www.ucs.mun.ca/~jcraig/marconi.html and here http://www.britannica.com/bcom/eb/article/0/0,5716 ,63990+1+62410,00.html?query=radio