Compressed Definition and 309 Threads

I'm building a compressed air car that will move a 70 kg person and I'm wondering how far it can go off a 135 PSI tank with 10 gallons. The vehicle should have a mass of at most 80 kg and I'm trying to figure out how to do calculations with a coefficent of friction of 0.5. Can anyone help me...

Hi- A recently installed natural gas main is showing evidence of water infiltration. Water is getting into the customers regulator and meter and freezing. The gas main was cleaned and "pigged" after the installation. The system is currently operating at an MAOP of 60 PSIG natural gas. When...

I have a problem that I just can't seem to figure out. Here's the problem: The drawing (Click Here) shows a block (m = 1.6 kg) and a spring (k = 325 N/m) on a frictionless incline. The spring is compressed by x_o = 0.35 m relative to it's unstrained position at x = 0 m and then released. What...

Interesting new concept car-runs on compressed "air" link here : http://www.theaircar.com/ thoughts ?

Does anyone know of an internet site that discusses the properties of compressed air in a tank, and how the air behaves when it is released from the tank. Also, is there an equation which describes the rate at which air leaves through a valve of a tank? Thanks much

http://www.theaircar.com/howitworks.html also: http://auto.howstuffworks.com/air-car1.htm I haven't studied this yet but to me this seems an unlikely technology. This must be terribly inefficient. It even strikes me a bit as a scam - clean technology? Comments?

On an automotive forum, a member made a statement that compressed air won't hold as much moisture as ambient pressure air because the water is "squeezed" out by the pressure and is also, therefore, "drier" air. He pointed to the need to drain water from the tank as proof of the squeezing...

Black Holes Gre.67 67. A black hole is an object whose gravitational field is so strong that even light cannot escape. To what approximate radius would Earth (mass = 5.98 x 10^24 kilograms) have to be compressed in order to become a black hole? a. 1 nm b. 1 microm c. 1 cm d. 100 m e...

http://auto.howstuffworks.com/air-car.htm