This account is temporarily suspended to cool down. The suspension period ends in 7 days.
barrycarter
Reputation
Top tag
Next privilege 5 Rep.
Participate in meta
 15h comment The force of gravitation Done. meta.physics.stackexchange.com/a/7470/854 is my new "goto" link. 17h comment Circular Waveguide (for dominant mode) se.u.94y.info for a list of potentially helpful resources 17h comment Numerical problem related to Newton's Law of Gravitation se.u.94y.info for a list of potentially helpful resources 17h comment Speed of light interpretation I actually understand this question, but it's fairly silly (and off-topic). Given any finite length open interval, a given "chunk" (photon?) of light will only remain in that open interval for a finite time (like a good guest?), instead of remaining there indefinitely. This applies even if the finite open interval consists of a non-vacuum. In other words, many things can slow light down (eg, en.wikipedia.org/wiki/Bose%E2%80%93Einstein_condensate), but nothing can stop it. 17h comment WHO WAS FIRST TIME OR MOTION? I think you're talking about one form of Zeno's Paradox here. It's interesting, but it's also clear that motion and velocity do exist. You might try Philosophy. Feel free to contact me directly (contact info in profile), as questions like this interest me, even though they're not appropriate for this site. 17h comment Equation of trajectory using Maupertuis principle se.u.94y.info for a list of potentially helpful resources, although I think you need other data (eg, initial conditions) to make this computation. 17h comment The force of gravitation se.u.94y.info for a list of potentially helpful resources, but: the forces are equal, and yes, the Earth moves, but only a very small amount. 17h comment Electronics - Series/Parallel Circuit Question se.u.94y.info for a list of potentially helpful resources 1d comment Buoyancy project @thalaron This site is physics.se. It's just a short way of saying physics.stackexchange.com. It's a bit inaccurate, since physics.se could also be its own domain, but that's not how it's meant here. Apr 28 comment Plucking Guitar Strings se.u.94y.info for a list of potentially helpful resources Apr 28 comment Can the second law of thermodynamics be violated in a small enough system if tried repeatedly enough? google.com/search?q=decrease+in+quantum+entropy shows a few papers which point out that, yes, at a quantum level, entropy can decrease. Apr 28 comment Difference in time for clock in attic vs clock in cellar se.u.94y.info for a list of potentially helpful resources. Hint: gravity. Apr 27 comment Two inertial frames (different angles) Are you confused on both parts of the problem, or just the relativistic parts? Apr 27 comment Why does't the use of the same number of significant digits result in consistent result? physics.stackexchange.com/questions/227942/… is probably unhelpful. Apr 27 comment Reversing Entropy You've invented the "swamp cooler": en.wikipedia.org/wiki/Evaporative_cooler -- I personally don't understand exactly how it works, but it's well-known and doesn't break the 2nd Law of Thermodynamics. Quantum mechanics guarantees that the 2nd Law of Thermodynamics must fail at the quantum level (quantum microentropy), but no one has found a way to use this yet. Note also that there are already plenty of sources of free energy: solar, wind, geothermal, and many many more. Apr 27 comment Find the time (in seconds) Tom would need to catch Jerry se.u.94y.info for a list of potentially helpful resources Apr 27 comment Find force using mass, $x$ and $y$ coordinate se.u.94y.info for a list of potentially helpful resources Apr 27 comment how to solve this question? se.u.94y.info for a list of potentially helpful resources Apr 26 comment Thought experiment on special relativity As your velocity increases, you'd notice the distance between two stars (for example) as decreasing, which would contradict the Newtonian belief that the distance between two objects remains the same unless they are moving relative to each other. Of course, it's possible that you'd just say the stars are moving closer together, but even their shapes would change from spherical to oblong. Apr 26 comment In the GPS system, does the satellite clock see the earthbound clock moving slower, due to relativity? That's an extremely high velocity for a GPS satellite. Assuming the satellite remained in orbit, it would also have to accelerate significantly. And, when accelerating, it would age less than the nearly-inertial Earth frame. Thus, it would see Earth clocks going faster, not slower.