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Mar
10
comment Why does matter exist in 3 states (liquids, solid, gas)?
Actually, so far as our ability to measure and interpret are concerned, the ultimate answer to a "why" physics question is "energy". I've also taught my daughters the corollary the ultimate answer to a "why" people question is "money".
Feb
25
comment Can radioactivity be slowed through time dilation?
Muon decay is the key to remembering so many concepts of special relativity. For instance, the alternative interpretation - that the distance from the top of the atmosphere to the ground is shorter - is how I remember when Lorentz contraction occurs.
Feb
5
comment Cause for spikes in trinity bomb test
I find this answer to be very valuable: it demonstrates the method used to get to the answer, not just the answer itself. Which is more valuable? I value the method.
Feb
2
comment Why do we travel in a circle along the Earth?
WOW This is one of those answers that illuminate a corner that I didn't even know was dark. Thank you!
Nov
19
comment If gravity isn't a force, then why do we learn in school that it is?
Dotan's razor: An insignificant inaccuracy can save a lengthy explanation.
Nov
19
comment If gravity isn't a force, then why do we learn in school that it is?
I find that dupes are like symlinks. I often get to the good stuff by googling the dupes!
Nov
19
comment If gravity isn't a force, then why do we learn in school that it is?
Though I agree that this is a physics education question, not a physics question, it implies a greater "Why is physics traditionally taught this way" question that is pertinent to both physicists and those learning physics. So pertinent, and in fact fundamental, that I consider this to be one of the best questions to be asked on this site.
Oct
8
comment Am I attracting Pluto?
Pluto is only 4.5 light hours away.
Aug
28
comment Push a Boeing 737 on ice: Did this guy have a chance?
@MooingDuck: That is because I ask if the worker can prevent the plane from sliding further, i.e. when it stops between slides. In the beginning of the video, it can be seen that the plane slides a bit, then stops, before it starts to slide again.
Aug
27
comment Push a Boeing 737 on ice: Did this guy have a chance?
Actually, the nosewheel does seem to be a bit further from the main gear than is the center of area of the vertical stabilizer.
Aug
27
comment Push a Boeing 737 on ice: Did this guy have a chance?
Terrific analysis, thank you! I'm happy to see that the little blue jacket man, had he been equipped and knowledgeable, actually stood a chance after all!
Aug
19
comment Am I attracting Pluto?
This is a beautiful, well thought-out answer. It's answers like this that keep me on Physics.SE.
Aug
17
comment Am I attracting Pluto?
Unless you are Alan Stern, I stand by the assertion that Pluto is not affected by the fact that you are alive in any way!
Aug
13
comment Halley's Comet as a “Free Taxi”
@ericksonla: I believe that the word you are looking for is "lithobraking".
Aug
11
comment Is a bomb's shockwave strong enough to kill?
In 2006 in Lebanon a mortar landed just about a meter or two away from me. I was wearing a helmet, combat vest, and very light (shrapnel) armor at the time. There was no shrapnel from the (possibly improvised) mortar, but the blast blew me back into the wall behind me and I was out for a few seconds. I'm still here to tell about it!
Jul
1
comment How to emulate 40ft (12 m) of water?
By far the safest and easiest to implement solution. Any leaks or other issues that the OP will have with this method, he would have with any of the other methods as well.
Jun
8
comment Why do two flames kept side by side merge into a single flame?
Very nice answer for a relatively new P.SE member. Thank you!
May
27
comment Why do electric sparks appear blue/purple?
Note that the answers below also apply to lightning.
May
19
comment Does a well-lit mirror weigh more than an unlit mirror?
Most of the effect of the light on the mirror will be on the non-reflective side, such as heating it up.
Apr
29
comment Does a truck stop faster if the stack on the back of truck is stable or if it moves forward?
@WetSavannaAnimalakaRodVance: You guys have semitrailers with an odd number of wheels? Or is the steering wheel counted in there too?