Blade_Runner wrote:
I see you've been granted another furlough from the asylum. What was it this time? Good behavior? BJs? Or, were the staff just really tired of your bullsh!t?
Anyone with an elementary study of physics understands that an increase in pressure results in temperature (energy) increase. The potential energy contained in one tower (600,000 tons) was enormous.
The gravitational potential energy of an object is the energy it takes to raise it to a certain height, or the energy obtained by letting it fall. The formula is U = mgh. U is the standard symbol for potential energy, m is mass in kilograms, g is the gravitational acceleration of the earth and h is the height in meters. Energy is in joules. One watt is one joule per second, and a joule is roughly the energy needed to raise one pound one foot.
For the World Trade Centers, the towers were 400 meters high and their mass was 600,000 tons or 600 million kilograms. So the total gravitational potential energy in one tower was 6 x 108 kg x 9.8 m/sec2 x 400 m x 1/2. The factor of 1/2 comes from the fact that some mass fell 400 meters and some fell only a short distance, and the overall result is as if it all fell the average distance. So we have U = 1.2 x 1012 joules. A kiloton is 4.2 x 1012 joules, so the gravitational potential energy is about a quarter of a kiloton or 280 tons of high explosive, per tower.
The planes that hit the towers were Boeing 767-200's, with a loaded mass of about 140,000 kg. They impacted at about 600 km/hour or 167 m/sec. So their kinetic energy was K = 1/2 mv2 = 1/2 x 140,000 x 1672 = 2 x 109 joules.
The basic 767-200 has a fuel capacity of 63,000 liters, and accounting for fuel burned before impact, call it 50,000 liters. Jet fuel has an energy content of about 35 million joules per liter. So the energy content of the fuel on each plane was 1.75 x 1012 joules or about 0.4 kiloton. An appreciable amount of that energy would have been released explosively, the rest during the fires following impact.
The energy from the collapse of one tower would have been roughly equivalent to a magnitude 3.5+ earthquake and the energy from the plane impacts somewhat less, depending on how much fuel exploded on impact. The impacts of the planes themselves would have been only a small part of the total energy released. The actual observed magnitudes were less because not all the energy was converted into seismic waves.
Stands to reason that as the kinetic energy in the mass of the tower as it accelerated during collapse would generate temperatures far above the melting temps of steel. Not a "normal fire" by any stretch.
"Thermite"? "Missiles"? "Mini-nukes"? "UFOs and Death Rays"? "Cosmic vibrations"? "Black holes"? Or, is this all the SciFi fanaticism of a little boy trapped in a man's body whose mommy never breast fed him?
I see you've been granted another furlough from th... (
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I must assume from your absence of any knowledge of the laws of science and physics that you are still breast feeding.
Steel framed skyscrapers cannot fall through the resistance that has held them up for over half a century at free fall speed. Three steel-framed skyscrapers cannot fall from fire damage on the same day when none have in the 100-year history of skyscrapers. Watch this video and tell me where you see any fire as the Tower comes down?
Multiple and rapid explosions are visible but no fire to be seen anywhere.