Does anyone know if they will begin selling the compressed air car in the US?
It's sold in India as a bus...the body design is made up of glued panels to lower costs...would not meet safety standards in the US. Generally considered a short range commuter vehicle for urban settings. If the company could find a production partner in the US to meet safety isuues, it could be sold here. It still has drawbacks to being truly "green" in that it transfers power requirement to a coal fired power plant....PV charging would negate that factor. http://green.yahoo.com/blog/ecogeek/66/a...
Let's not forget positive pressure displacement. Fill an enclosed pressure capable tank with water. Have the water Outlet at the bottom and air pressure inlet at the top. Pump Air in and water goes out. Not so much a pump but an effective way to move water from one place to another. This pumping method is common in some laboratory equipment such as synthesizers and sequencers. I may be wrong about this but I think compressed air is used to " blow" the ballast on some submarines.If you need a metered flow just fashion a point restrictor of the proper size somewhere in the outlet line. That should do the trick. Of course, you need to regulate your air pressure as well to do a really good job of metering the water flow.
One thing I don’t see mentioned in other responses is reliability. I know with my experience tuning GM computers, that they are tuned broad to run well on a variety of fuel grades and qualities, in everything from 120*C to -40*C without a single change to the engine. It’s all done by the tune, so to run well in all those conditions, the spark tables aren’t optimized to make maximum power and the fuel/air tables aren’t tweaked to take advantage of the oxygen density of the air in your area and current season (cold air is more dense, as well as being denser at sea level, for example).With my personal vehicle, a 2002 Chevy Silverado, I was able to run the truck year round through the weird climate of my area (temps up to +40*C in the summer and -60*C in the winter). Once I did a complete tune in the summer for it, it ran even better and was more efficient, which meant more power and slightly better fuel economy (driving the same with a tune and stock). But my first year of experimenting with tuning, I left that summer tune on into the winter. Once it started getting cold, my truck had trouble idling when starting up and didn’t seem to have the same throttle response as it once did, due to improper fuelling. Once I redid the tune for the winter, It ran just as good as it did in the summer, even though they had many differences to the physical values. The Winter tune wasn’t good in the summer and the summer tune wasn’t good in the winter.This is why your average car runs okay all year round, instead of really good all the time, because it’s not possible to run optimally without adjusting various parts of the engine. Back in the old days, they had carburetors with adjustment screws to tweak the fuel delivery, ignition distributors that would allow you to quickly adjust the spark timing with a few simple tools. Now you can’t access these things, it’s all done by computers and locked behind expensive software to access, so an all encompassing tune is made so you don’t have to make seasonal trips to the dealership to the get the ECU flashed.
You use the relative atomic mass of the atoms.Carbon has a relative atomic atomic mass of 12. Oxygen has a relative atomic mass of 16, so two of them is 32.Hence in whichever mass CO₂ you choose, there will be (12 ÷ (12 + 32)) × 100% = 27.3% to 3sf.
Friction creates ground reaction force except in what direction?
it is very true that friction acts against the direction of motion actually there is an extension to this statement that needs to be considered which is more relevant and that is friction acts against the direction of motion or the tendency for motion. the wheel comes into contact with respect to the ground and travels along with it without slip and leaves contact. this means that the case of friction is a case of static friction and not sliding or dynamic friction. thus the friction force is not moving through any distance and consequently does no work. on the other hand this friction is what we call the traction capability because if we apply a greater force at the point of contact than can be supported by this friction force (traction force) the wheel would skid. thus the friction force would be directed in the direction of motion of the bicycle on both the wheels in other words from right to left
I really need some help with physics?
This looks more like geometry than physics. The angle between the x and y axis is always 90 degrees. Seeing as the x axis is not horizontal, and that you are in a 3D space, the possible y axis directions form a plane that is perpendicular to the x axis. If you are working in a 2d world, and assuming that the positive y axis *must* be 'up', which is a poor assumption, then it would be 90+75 for 165 degrees, or 90-75 which is 15 degrees. In any case it would be 15 degrees above the horizon. If you get into perspective or 3d drawing on a 2d surface, some angles that are right angles in 3D space will appear as other angles in the 2d drawing. Which, unless you know the transform from one to the other, you will not be able to figure out. There are some standard transforms, one has 90 degree angles being represented as 60 degree angles, frex.
A lot of people have stated what we’ve invented. Just remember America, many ‘social, historical, political’ areas of the US came from us.Well the POTUS Mother was Scottish. Actually spoke Gaelic as a first language so her son’s policy of ‘English language first’ kind of goes against his immigration policy. Plus his first (Czech) and third (Slovenian) Wives and Paternal German Grandparents. Don’t blame the English. Nicola Sturgeon in Edinburgh is your contact.The Mayflower ship from Plymouth, England and it’s Pilgrims is why you celebrate Thanksgiving.Your national holiday (4th July) is because of gaining independence from us.Your ‘Language’ (dialect) is from us.Cities/States like Washington, Boston, Lincoln, New York, New Jersey, New England, New Hampshire, Birmingham (Alabama) etc with names from us.Girdiron was actually Rugby Union founded by William Webb Ellis. Rugby a worldwide game and they don’t need padding or helmets. 80 minute game (2*40 mins) with 10–15 min HT completed in 1:45–2 hours. Baseball is from Rounders but in the latter you only get one attempt to ‘strike’.Most American reality shows were founded by British moguls. So you think you can Dance?, American Idol, Apprentice, American X Factor, America’s got Talent etc. Dancing with the Stars is on licence from BBC’s Strictly Come Dancing.US does like to copy and ‘Americanize’ British shows (The Office etc).America had racial tensions with Black Jazz, Soul, Blues Artists in the late 50s, early 60s. Beatles/Stones/Kinks/The Who etc were all big fans of Blues in particular, adapted the style and then gave it back to America. I mean the 9th February 1964 and the Ed Sullivan show…Although stated by others, the World Wide Web we are using here was invented by Sir Tim Berners-Lee.I think at times in the US, you should think ‘outside the box’ and not internally. Britain has invented a lot and in terms of the US, there’s a significant British influence that America has. Not forgetting the 4th Child of Scot, Mary Trump (nee MacLeod)…