See http://www.explorerforum.com/forums/showthread.php?t=122129 for ideas.
Definitely a tornado. A hurricane produces a large pressure drop over a distance of hundreds of miles. A tornado produces a similar, possibly larger pressure drop over only a few hundred feet.
Well this is a twofold answer because pressure itself does not mean anything when it comes to wind but rather pressure gradient or how fast the pressure drops over a given area. The faster the pressure drops over a small area the stronger the wind is forced to blow.Now lets take 2 examples here: atmospheric pressure 915 mb pressure drop: 25 mb Distance: 100 miles pressure drop/mile = 1/4 mb atmospheric pressure: 990 mb pressure drop: 25 mb Distance: 100 miles pressure drop/mile = 1/4 mb in these 2 situations the wind would blow the same speed. However like most situations the standard air pressure outside of the system would be around the same pressure or around 1010 mb so if we have the same 2 storms again but one of the storms is much larger then the other storm here is the result: atmospheric pressure 915 mb pressure drop: 95 mb Distance: 380 miles pressure drop/mile = 1/4 mb atmospheric pressure: 990 mb pressure drop: 20 mb Distance: 80 miles pressure drop/mile = 1/4 mb Again the wind speed would be the same since we are still falling at 1/4 mb per mile. So atmospheric pressure, storm size, surrounding air pressure, and other factors all come into play here... however if you had 2 of the same sized storms in the same atmospheric conditions but one had a pressure of 915 mb and the other had an air pressure of 990 mb the one with the 915 would have a higher wind speed due to a higher pressure gradient.
Tornadoes are very powerful because they have very low pressure at their centers. The large pressure drop over a short distance produces very fast winds. A tornado originates from a larger but less intense circulation called a mesocyclone which is embedded in a strong thunderstorm called a supercell. Other forces within the storm focus the lower portion of the mesocyclone into a smaller area, increasing both the pressure drop and the winds speed, so that instead of a 5 millibar pressure drop occurring over a distance of 2-6 miles a 50 millibar or greater pressure drop occurs over a distance usually less than 1/4 mile.
No. A tornado produces the steepest pressure gradient of any weather phenomenon. An intense mid-latitude cyclone might have an overall pressure deficit comparable to a weak tornado, but that pressure gradient is spread out over several hundred miles. A tornado produces at least that much of a pressure drop over only a few hundred feet.
When your cars is idle the oil pressure should drop, when you accelerate it should rise. The car stutter sounds like a catalytic converter goin out
A tornado produces a greater pressure drop over a shorter distance than a hurricane.
when travelling at around 60 a vibration noise all over the car.If you restart it will be ok for many miles.
Wings are airfoils. The purpose of the airfoil it to accelerate air over the top of the wing and create an area of low pressure, which produces lift.
A LOT more than we think. a human can accelerate faster than a race horse and lift over 1000 pounds when our lives are at risk.
Accelerate, motion is generated by applying force to mass.
Generally, above 37mph depending on rear axle ratio. If you have a tachometer, you can see the RPM drop. Or, slowly accelerate. You can feel it shift at around 20mph, then again around 30, and right around 37-42 it'll drop to fourth gear.
Most winds on earth are produced by pressure differences. The greater the pressure change over a given distance, the greater the wind speed. Tornadoes produce a large pressure drop over a very short distance, resulting in extremely high winds.