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1d
comment Does the speed of light change?
I'm voting to close this question as off-topic because it shows insufficient prior research.
1d
comment Does the speed of light change?
Hi Derb. You need to have a look at all the many other questions asking why the speed of light is constant, and then refine your question to explain exactly why you think the speed of light might be changing.
1d
comment Does gravitational time dilation have a direction?
@barrycarter: not true. For example even though you would be weightless at the centre of the Earth the time dilation is not zero.
1d
comment Why does a curved spacetime result in a movement?
Possible duplicate of: How does “curved space” explain gravitational attraction?
1d
comment According to Ohm's Law, shouldn't there be a zero electric potential within a capacitor since the current is 0?
Hmm, yes, OK. I'll clarify.
1d
comment What happens to the radius of a sphere if I double the number of atoms contained in it?
The volume would indeed double, but $r \propto \sqrt[3]{V}$ so $r$ wouldn't double.
1d
comment How is it that distortions in space can be measured as distances?
@wehnsdaefflae: I've extended my answer to address your comment
1d
comment Generating electricity
I'm voting to close this question as off-topic because it is not about physics
1d
comment Question about a solution of a partial differential equation by separation of variables
@march: why not post that as an answer? OK it's a maths question, but it's physically motivated and I think an OK question for this site.
1d
comment Force required for balancing a three-bodied frictionless and gravityless system
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.
1d
comment Number of impacts nitrogen molecules make with the palm of a hand
Hi Kassu 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.
1d
comment Speed of gravity within a mass
@asmaier: I think it's extremely unlikely we'll ever observe refraction of gravitational waves. If we had enough mass for refraction to be detectable it would be swamped by gravitational lensing.
2d
comment Does the size of a black hole change depending on its charge or spin?
Thanks Chris :-)
2d
comment What is collimated/paralell beam of atoms?
I'm voting to close this question as off-topic because it shows insufficient prior research.
2d
comment What is collimated/paralell beam of atoms?
FFS did you do the obvious Google search? The top hit is a Wikipedia article explaining what a collimated atomic beam is.
2d
comment What happens to the average kinetic energy if you double the temperature?
Yes, though only for an ideal gas of course.
2d
comment What happens to the average kinetic energy if you double the temperature?
The molar internal energy of an ideal gas at constant volume is $U = C_vT$, where $C_v$ is a constant. So $U \propto T$.
2d
comment Does the size of a black hole change depending on its charge or spin?
@Amphibio: yes, $Q$ is just the charge in coulombs. The black hole could be charged because the matter it formed from was charged, or you could take an uncharged black hole and fire charged particles into it. However in practice it's exceedingly unlikely any macroscopic black hole carries a significant charge as there is no known mechanism for generating such large charge separations.
2d
comment Find the period of a pendulum system
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.
2d
comment How were gravitational waves discovered?
Re time dilation see: Gravitational waves and time. tl;dr - yes.