Recent content by fullerene

Do you mean that I can simply get the pressure value at any point by doing this: P=density*g*h? The problem is, the gas' density is not a constant because the gas is compressed by it's own weight (the lower it is, the higher the density). Do you think that we must know a "compressibility...

This is not a homework, but it seems that this is may be the most appropriate forum for my question. Consider that there is a column of homogen gas, h meter high. Under the assumption that gas is compressible, how can we determine the function of density (or pressure) related to height? Of...

Ok, thanks HallsofIvy and loop_quantum_gravity.

Hmm... I think that the force to shoot the projectile is irrelevant because the projectile has experienced the accelerating process and the force that "shoot" the projectile is no longer acting on it. I dunno, maybe I'm wrong. Btw, when we consider that this experiment is done in vacumm, the...

I'm not sure if this is the appropriate subforum, but here it goes: Suppose you have a particle, with the mass m, at the bottom of jar which is filled with liquid. The particle is shot upwards, parallel to the gravitational force, with the speed v0. The drag force is proportional to the...