Did London bridge collpased by resonance effect?
468103
Categorically, no.\n\nIt's fallen down, been burnt, sold, and all sorts of other mishaps, but never resonated.  See here: http://en.wikipedia.org/wiki/London_Bridge\n\nThere *were* problems with the Milennium footbridge, which did resonate to the frequency of people's footsteps, though - see here: http://en.wikipedia.org/wiki/London_Millennium_Bridge\n\nThat sounds more like what you're after.
470416
The only reason the empire state building is struck so many times, is because it is taller than everything else and due to the fact of it having a very thin point, a large amount of positive atoms congregate at this point and since the lightning is negatively charged atoms its is attracted to this point.  If you talking about it hitting the ground on the same spot then it is possible i think, i am not to sure but it is highly unlikely though.
808749
The Tacoma Narrows bridge was I think referred to as galloping gertie or something because it would move so drastically due to harmonic vibration caused by wind.  More recently there was a pedestrian bridge in London (England) that had harmonic movement issues due to the mass of people walking on it. THye corrected this but it cost several million dollars.  These are 2 examples of poor engineering design. Here is the link to the Tacoma Bridge collapse\n\nhttp://en.wikipedia.org/wiki/Tacoma_Narrows_Bridge#Film_and_Video_of_collapse\n\nBridges that are made of concrete have steel reinforcing rods embedded in the concrete. In certain areas chlorides from either the presence of seawater or from salt application in snowy climates can cause corrosion of the steel ultimately resulting in failure of the structure.  The chloride is mobile through the concrete and forms galvanic cells around the steel causing the steel to rust. Rusting steel takes more space than unrusted steel and the concrete breaks apart.\n\nSttel bridges require constant attention or they will corrode and fail. The Golden Gate Bridge has a permanent staff assigned to it to paint it. They go from one end to the next and ny the time they get to one end its time to start again.
1087202
One of the TV specials indicated that the WTC was designed to take the impact of jet plane.  However it was smaller one than what hit it.\n\nObviously each tower was able to absorb an impact above what it was designed for.\n\nThe near full load of jet fuel in the plane ignited and with the sprinklers not function due to the impact, the intense heat of the fire soften the structural beams.\n\nEventually the structure, already damage by the impact, failed because the reaming steel became too weak
499307
Looks like you have a Wheatstone bridge. Why don't you try Wikipedia.\n\nhttp://en.wikipedia.org/wiki/Wheatstone_bridge
860624
the engineers did not account for the  phenomena of  mechanical resonance.
325616
It will give you maximum range of use with the bridge if in the center. \n\n If the null point were at one end, it's possible that you would not be able to adjust the slide to achieve a balance (or null).
267287
It depends by what you mean when you say "London Bridge." Most people actually think of the Tower Bridge when they hear "London Bridge," in which case this website may be of some use:\nhttp://www.towerbridge.org.uk/TowerBridge/English\n\nHowever, if you do mean London Bridge, you'll find that there are many versions that hold claim to this name, all on the same site at different points in history. \n\n"London Bridge is a modern structure built on the site of many bridges, one of which (built in 1825 and designed by John Rennie) is now in Lake Havasu City, Arizona. At one time London Bridge was the only bridge in London spanning the River Thames."\n\nThis information above (and more on other bridges in London, including the Tower Bridge) can be found here:\nhttp://gouk.about.com/cs/london/a/londonbridges.htm
225165
The first thing that you really need to pay attention to is the dynamics of the wire itself and not the physical size.  Your statement is very bias as I could say that why do fiber optic lines tranmit so quickly and the wire holding up the golden gate bridge is not quicker???\nThe quickest and best answer unless you have degrees in physics is the density of the fibers.  It all comes down to density and a mirid of other factors, but density is the key my friend.\n\nHappy conducting my fiber friend!
852108
Here's an answer that comes from a class I took in structural engineering.  Every building has a natural resonant frequency, ie, a frequency that it tends to oscillate at if it's shaken.  It's just like a tuning fork, or the string of a violin.  If an earthquake shakes the structure at a rate equal to its resonance, it will vibrate much more intensely, and be subject to more damage, that would be the case if the frequency were different. Also, I should point out, there are higher frequencies, called harmonics, which have a similar effect; however, they're not nearly as bad, and can often be ignored.  It has been determined from experience that the very worst earthquakes tend to produce vibrations in the 2 to 4 Hz range, so the engineer designs a building so its natural resonant frequency falls outside this range.  So here's a tip: Find out what frequency the earthquake simulator produces.  Try to design your building so its resonate freq. is higher or lower than that.  You'll have to think a bit about this, and be ingenious!  The frequency can be calculated, but that involves solving some differential equations (I don't think you're ready for that, yet...)
644355
"In physics, resonance is the tendency of a system to absorb more energy when the frequency of its oscillations matches the system's natural frequency of vibration (its resonant frequency) than it does at other frequencies. Examples are the acoustic resonances of musical instruments, the tidal resonance of the Bay of Fundy, orbital resonance as exemplified by some moons of the solar system's gas giants, the resonance of the basilar membrane in the biological transduction of auditory input, and resonance in electrical circuits.\n\nA resonant object, whether mechanical, acoustic, or electrical, will probably have more than one resonant frequency (especially harmonics of the strongest resonance). It will be easy to vibrate at those frequencies, and more difficult to vibrate at other frequencies. It will "pick out" its resonant frequency from a complex excitation, such as an impulse or a wideband noise excitation. In effect, it is filtering out all frequencies other than its resonance."\n\nThe above is lifted from Wikipedia, the online encyclopedia.\nIn electronic circuits, resonance is produced by a tuned combination of Capacitors and Inductors.\n\nThe following link allows you to input capacitance and inductance, and will calculate the resulting resonant frequency for you:\n\nhttp://www.deephaven.co.uk/lc.html
579183
Yes. If there is no dampening the energy just keeps going back and forth between maximum potential energy (U) and maximum kinetic energy (K). If there is nothing opposing the restoring force it will remain in SHM (simple harmonic motion) and oscillate continuosly.
479528
As the loads increased the line to neutral imbalance of each phase caused the neutral to ground voltage to increase.\n\nThe load of each line to line or line to neutral imbalance causes current in each phase to be imbalanced.
391194
I'm assuming you talking about CAT5 or twisted pair cabling. When current runs down a wire a magnetic field is formed introducing noise into the line. By twisting the pairs the magnetic field is interupted and therefore canceling the noise.
565721
Though it cannot be evidenced that this was something to do with Ramayana or not however considering the quality and details included in Ramayana it is very likely that author of Ramayana had seen some sort of connection between two which looks like bridge and that's why he would have included this in his books.\n\nSome Hindu groups claim that the bridge is evidence that events narrated in the Ramayana epic actually took place and cite NASA's imagery of it as proof of their claims. NASA has distanced itself from such claims:\n\n"The images [...] may be ours, but their interpretation is certainly not ours. [...] Remote sensing images or photographs from orbit cannot provide direct information about the origin or age of a chain of islands, and certainly cannot determine whether humans were involved in producing any of the patterns seen."\n\n\nArcheological studies of the bridge are ongoing, and some archeologists claim to have found evidence suggesting that the bridge is man-made. For instance, some researchers from Bharathidasan University, Tiruchirappalli, announced that the "bridge" is only 3,500 years old.\n\nSea levels rose about 10 or 20 metres in the 6th millennium BCE to reach levels similar to today, so in 6000 BCE the bridge would have been an isthmus situated above sea level. As such, it almost certainly would have been a viable route for humans to have reached Sri Lanka by dry land.
946178
During a smash with a hammer two end of a metal show a potential difference. That is piezo electricity.\nDuring the smash electrons are displaced.\n\nTh
801893
It certainly is in London.\nI very calmly reacted to all the tube cancellations this morning.\nI reacted calmly to the traffic jams that prevented the bus from moving down the bus lane for over an hour. \nI reacted calmly when my boss sarcastically asked if I'd overslept and I'm being very calm about responding to your question.\nEven though it is COMPLETELY WRONG!!!!!