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Apr
27
comment Coulomb's law and its application
Hi Abir. Neutral atoms can form chemical bonds with each other. However a discussion of chemical bonding is broad a question to be usefully answered here, and in case case it would be better discussed on the Chemistry Stack Exchange.
Apr
27
comment How does sound propagate through a mesh structure?
No, sound diffracts by the same mechanism that light diffracts i.e. a path dependent phase difference.
Apr
27
comment How does sound propagate through a mesh structure?
The mesh is going to diffract the sound in a fairly obvious way. Were you after something more subtle than this?
Apr
27
comment What is happening to energy that is not used as work?
Suppose you apply a force to the wall be leaning some heavy object against it. There is a force on the wall, but no work is being done. However unlike the heavy object your muscles need to consume energy to maintain a constant force, which is just down to the way muscles operate. The energy consumed by your muscles ends up as heat.
Apr
27
comment Gravity & centripetal force
It isn't clear what you mean by two centripetal forces or what you mean by a global theory. Can you edit your question to clarify what you are asking?
Apr
27
comment What is happening to energy that is not used as work?
See also The physical definition of work seems paradoxical
Apr
27
comment What is the difference in subjective time experienced by an orbiting and stationary observer?
Hi and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems.
Apr
27
comment Magnetic field in the centre of a square loop
Hi and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems.
Apr
27
comment How to solve the following wave equation?
Hi Koushal. Your question was closed because as originally posted it just asked us to solve an equation for you with no comment as to what the physics involved was. I note you've edited it to give some context, but it still looks as if you haven't bothered to try and research this for yourself. I'd be surprised if there was any great enthusiasm to reopen it.
Apr
27
comment How to solve the following wave equation?
Hi and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems.
Apr
27
comment Find force using mass, $x$ and $y$ coordinate
Hi and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems.
Apr
27
comment Transverse simple harmonic wave travelling in a string
@DeNiSkA: please don't attach a photo. Either write out the equations or don't answer.
Apr
27
comment How does time get on our clocks?
You need to clarify what you are asking. The issue of time in the Hamiltonian formulation of quantum gravity is a highly technical one that is going to be hard to explain on a popular science level. However you may be mixing this up with the simpler (if philosophically masturbatory) idea of eternalism/block universe.
Apr
26
comment An explanation of Hawking Radiation
@HowardMiller: in order to explain physics to non-physicists we frequently have to procede by analogy. Whether we should do this is debatable. My view is that interesting people in physics is good and we shouldn't worry too much if we have to bend the truth in the process - after all this is science not religion. However this is a physics site for physicists, and we should not be perpetuating falsehoods here.
Apr
26
comment Affects of static electricity on the heart
I'm voting to close this question as off-topic because it is not about physics
Apr
26
comment Particle-antiparticle spatial arrangement?
I'm voting to close this question as off-topic because it shows insufficient prior research.
Apr
26
comment Does contracted spring weigh more than stretched one?
I'm sure this has been asked before, though searching the site for it is proving frustrating. I have found the question Has $E=mc^2$ been experimentally verified for macroscopic objects with potential energy? which includes a question on spring mass change due to compression.
Apr
26
comment An explanation of Hawking Radiation
@ArnoldNeumaier: incidentally, if I haven't thanked you before let me do so now. A lot of the stuff from your web site was essential pre-reading for writing this. I much appreciate the effort you've put in to make the articles available on the web.
Apr
26
comment An explanation of Hawking Radiation
@ArnoldNeumaier: to be fair I think it's impossible to write a popular science book without making use of the virtual particle analogy. How much harm it does is debatable. Hopefully physics students will rapidly forget everything they saw about virtual particles on the Discovery Channel :-)
Apr
26
comment An explanation of Hawking Radiation
@ArnoldNeumaier: I didn't think Veltman discussed Hawking radiation in that book. I have the book somewhere so I can check, but I'm fairly sure it doesn't mention Hawking radiation.