Why does an air bubble increase in size at the surface of the liquid?
Boyle's law says PV=RTHere P is the pressure, V is the volume and T is the remperature. R is a constant. When T is constant we getPV=Constant.When bubble is deep down it has water pressure and atmosphere pressure. As it raises, water pressure which is proportional to the depth, reduces. This will give V more. Volume increases.
As a plane is about to crash, could one just jump off the plane just before it crashes and survive?
This scenario happened to an instructor while I was in Air Force pilot training.It was not what he intended to do, but it ended up being what you’re suggesting.He and a student got into a spin from which they could not recover. The student, a member of my class, had made comments to friends that if he were ever in a position to eject, he wouldn’t do it. No one reported him for saying that because we didn’t take him seriously.AND THEN IT HAPPENEDUnfortunately, a few weeks later he was in that situation and, as he said, he did not eject. No one will ever know exactly what happened in the last few seconds—so this is speculation from the accident report—but it appeared that the instructor delayed his own ejection trying to talk the reluctant student into pulling the handles.Just about one second too late the instructor pulled his handles anyway. He came out and the chute streamed out behind him, then he hit. One more second and the chute would have had time to inflate.CLOSED CASKET FUNERAL EITHER WAYI supposed you know pretty much nothing about physics, so let me say that the only difference your suggestion would make is that the body would be in slightly better shape. The student was killed in the crash and they recovered nothing more than pieces. The instructor was still intact, but, well, dead is dead. They both had closed casket funerals.WE CAN TAKE A LEAD FROM THE AIR FORCE PROCEDURESAfter this accident inquiry was complete, the Air Force modified its ejection procedures to make it crystal clear that the pilot in command was to say Bail Out! Bail Out! Bail Out! and then do it instantly. No one was to ever delay ejection to attempt to get a reluctant crew member to go.So, if you think about it, in a backwards way, the Air Force officially said that your idea won’t work. Of course those of us who attended the closed casket funerals already knew that.
Villain cliches?
i am writing a story making fun of all those stories with cliched villains, does anyone know of a list of villain cliches? thanks! Additional Details 0 seconds ago like an online list or if you know any write them here thanks
If someone jumps to the shore from a boat, the boat moves in the opposite direction. What is an explanation for why this happens?
Because the law of conservation of momentum says so.And, if you do not actually jump, you can weigh the boat like this. I have put a longer answer up about this, but it was a while ago. It is how you can weigh a boat with a ruler.Pull the boat up to the dock. Stand near the other end, and walk a measured distance towards the dock.The boat will move away from the dock.The distance you moved, (across the bottom, subtract the boats movement,) times your weight, equals the distance the boat moved, times its weight.Wind and current must be calm, of course.I have actually done this, with a big self dumping log barge (the Seaspan Rigger) that had lost an unknown amount of steel following a grounding on Edward King Island.I used a 14 ton Hyster fork lift that we drove down the length of the barge alongside the wharf at Esquimalt. There were likely inaccuracies, but it was sufficient to do the calculations needed to dock the ship for repair.This is real old time Naval Architect stuff!
I need world war 1 information by November 2 2007?
World War I, also known as the First World War, the Great War and the War To End All Wars, was a global military conflict which took place primarily in Europe from 1914 to 1918. Over 40 million casualties resulted, including approximately 20 million military and civilian deaths. The conflict had a decisive impact on the history of the 20th century. The Entente Powers, led by France, Russia, the United Kingdom and its colonies and dominions, and later Italy (from 1915) and the United States (from 1917), defeated the Central Powers, led by the Austro-Hungarian, German, and Ottoman Empires. Russia withdrew from the war after the revolution in 1917. The fighting that took place along the Western Front occurred along a system of trenches, breastworks, and fortifications separated by an area known as no man's land.[2] These fortifications stretched 475 miles (more than 600 kilometres)[2] and defined the war for many. On the Eastern Front, the vast eastern plains and limited rail network prevented a trench warfare stalemate, though the scale of the conflict was just as large as on the Western Front. The Middle Eastern Front and the Italian Front also saw heavy fighting, while hostilities also occurred at sea, and for the first time, in the air. The war caused the disintegration of four empires: the Austro-Hungarian, German, Ottoman and Russian. Germany lost its colonial empire and states such as Czechoslovakia, Estonia, Finland, Latvia, Lithuania, Poland and Yugoslavia gained independence. The cost of waging the war set the stage for the breakup of the British Empire as well and left France devastated for more than a generation. World War I marked the end of the world order which had existed after the Napoleonic Wars, and was an important factor in the outbreak of World War II.
What happens to the wavelength and speed of water waves as they move from deep to shallow region?
The question is very important and affects thousands of lives. A very complete study of waves is found in the Scripps Oceanographic Institution publication:http://pordlabs.ucsd.edu/rsalmon...As other respondents have explained, there is a huge difference between wind-generated surface waves, which are not strongly affected by ocean bottom topography, and tsunamis or tidal waves, which are almost invisible out in the ocean depths at an average of 4 km deep, travel at speeds up to 1000 km/hour, have wavelengths on the order of 500 km, periods of one-half hour, and on-shore heights up to 40 meters.Tsunamis and tides are markedly affected by bathymetry, i.e., the ocean bottom structure, depth, basins, seamounts, continental shelves, bars, canyons, etc.Generally long-wavelength waves travel faster out at sea than shorter wavelengths; that is why the long storm surge affords early warning of a distant storm at sea before the shorter, higher waves come crashing in against the cliffs.As the waves approach the shore, similar principles apply for all kinds of waves, resulting in slowing down of the wave velocity, increase in wave height, shortening of the wavelength, and no change in frequency. This is explained simply at the following YouTube site: