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3h
comment How to emulate 40ft of water
@JohnRennie You put water in your bicycle tyres?
1d
comment Sedimentation at the bottom of a vessel
Did you look into the field of fluidized beds? I can imagine there are relevant similarities.
2d
comment Is it possible to hear trains when you live nothing near them?
Thought about this: youtube.com/watch?v=2kDORB3vR8s
Jun
28
comment Can gravity in principle be made to flow through a “wire”?
What about a waterfall?
Jun
28
comment Why is work done $F$ applied over a distance energy?
@user84641 Your comment does not really relate to your question above. Do you know the difference between work and energy?
Jun
28
comment Why is work done $F$ applied over a distance energy?
@Qmechanic I am not sure if the question is "Why is it called kinetic energy?" or "Why is this expression an energy".
Jun
28
comment Acceleration derivative
Your last equation is dimensionally incorrect.
Jun
28
comment Estimate the amount of atoms in the smallest speck of matter you can see with the naked eye
1) How did you transform volume to amount of atoms? 2) Why did you pick a sphere, and not just a disk-like volume?
Jun
28
comment Numerically summing a divergent series
Also, I think this question would be much more appropriate on Computational Sciense SE.
Jun
28
comment Numerically summing a divergent series
@grdgfgr The point is that you get an "arbitrary" result based on the amount of terms and resolution. Analytically you might be able to say something useful when taking limit to 0 or $\infty$, but numerically you can only take limits to very small or very large (system precision). This is just not the same thing.
Jun
26
comment Julia in computational physics
This is an interesting discussion that I would like to follow. But I also have to agree with @CuriousOne that this is not on topic on Physics SE in it's current form.
Jun
24
comment Moment of Inertia of Water.
Do you know how to calculate the center of mass of two point masses? And three point masses? See where this is going?
Jun
23
comment Measuring pressure
What is pressure at the atomic level?
Jun
7
comment Why doesn't this magnetic perpetual motion machine work?
I like the sketch before your edit a bit better actually.
May
25
comment Programming in physics
Interesting question, but I am afraid it will be closed as primarily opinion based. If not, I can write a long story on my opinion on this issue. Basically do as many physicists do: learn as you need. Most physicists are very lousy programmers, so don't worry to much about it.
May
24
comment Can I do something for being heavier to be lifted?
@GlenTheUdderboat And, standing on one side, it would be easier to lift a 2m stick, than a 4m stick of the same mass.
May
24
comment Soliton solution for a diffusive system
Also, this may be more appropriate on the math stackexchange.
May
24
comment Soliton solution for a diffusive system
@sailx Ok, I understand your question better now. You may want to look into the error function, as it might help you. I am however a bit afraid for the quadratic term in the equation.
May
17
comment Which point in the graph does a parachute open?
1. It does not instantly open, right, it takes time. 3. What do you know about terminal velocity?
May
15
comment Is it possible to build an air compressor with no moving parts?
I'm voting to close this question as off-topic because it has been crossposted on engineering.SE ( engineering.stackexchange.com/questions/2832/… )