/sci/ - Science & Math

>>11392875
If you're enrolled at a university, you likely have access to academic papers thru your library. Have you tried that?

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Threadly reminder to work with engineers.

>>11260380
The boundary work performed by an expanding gas on its surroundings is given by
[eqn] W_B=\int_{1}^{2}P\text{ d}V [/eqn]
where P is pressure, V is volume of whatever contains the gas, and 1 and 2 are initial and final states of the gas. The most important thing to realize about this equation is that work performed by the gas depends on the path it takes from 1 to 2. So, the work done by a gas subjected to some kind of heat or impetus absolutely depends on how that gas behaves (if it acts like an ideal gas, for example), and also on the mechanical and thermal constraints of its container (like, is the gas permitted to expand at constant pressure, constant temperature, if it is insulated, etc).
>Would a tank of helium, or propane, launch a projectile at the same velocity as normal air?
Do they travel the same path from compressed state to atmospheric state? Meaning, are the starting and final states the same for each gas? They yes. But I don't think you can manage that with two really different things like helium and propane.

In short, no.

>>11254373
>Can a drum in space spin fast enough to create 1.5x gravity? So a person will get stronger in space, and not weaker?
Yes
>Are materials too weak?
No
>Will it take too much energy to keep it spinning?
No. Flywheels spin indefinitely in the absence of external torque. But if you were to run like Bowman in the OP, the wheel would speed up/slow down in accordance with the conservation of angular momentum. So you need to be attached to some larger body.