Recent content by Dalau

oh. d'oh. I forgot about limits. I'll try it again

Yeah. I wikied some stuff about air pressure, and found that: 1 pascal (Pa) ≡ 1 N·m−2 ≡ 1 J·m−3 ≡ 1 kg·m−1·s−2 so does this mean that it takes 1 joule to increase the pressure of one cubic meter by one pascal? For an example problem I set up, I'm just wondering if my math is...

I tried that method, but I don't see how it works. The acceleration is changing, but when I integrate the last equation, I get ax = (v^2)/2. Did I do something wrong?

So here I am at work, and the go-to people for physics are away. Here is the problem I am trying to figure out: I'm wondering how much energy it takes to compress a certain amount of air at a certain temperature, to a certain pressure. For example, let's say I had a 4-gallon tank of STP air...

I am designing an air pressure cannon, that relies on a tank of compressed air to drive a projectile through, and eventually out of, a tube. The initial acceleration (when the projectile is at the start of the tube) will be greater than the final acceleration (when the projectile has reached the...