Reputation
179,627
Next tag badge:
99/100 score
33/20 answers
Badges
26 306 500
Newest
 Good Answer
Impact
~5.8m people reached

11h
comment Torque, need help understanding a solution
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.
11h
comment How does Einstein's curved space time produce acceleration in a free falling object?
Possible duplicate of: How does “curved space” explain gravitational attraction?
11h
comment How can there be an infinite number of universes?
Somewhat reluctantly I have to vote to close on the grounds that in the lack of any experimental evidence this can only be a matter of opinion. If you want to take it to the chat room I'm sure you'll find people willing to discuss it, but the question is out of place on the main site.
11h
comment Does deformation due to a force affect the acceleration produced by it?
@FreezingFire: I have already voted to reopen the question, but it requires four additional reopen votes. I have no power to reopen this by myself.
12h
comment EM: invariant property in electromagnetic relativity
Google Lorentz scalar
12h
comment A problem on Doppler's Effect
Hi Srikar 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.
19h
comment How do I find the relation between the accelerations of the ring and the disc (see image)?
Hi Pratyush 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.
19h
comment Hydropower formula:
I don't think this can be answered from first principles. The manufacturer of the generator will have measured it's efficiency and presumably published those figures somewhere.
1d
comment What is the difference between Raman scattering and fluorescence?
@annav: just look at the Feynmann diagram for Compton scattering. It involves destruction of the original photon and creation of a new photon with a different frequency.
1d
comment Multifractal spectrum of a signal using wavelet transform
I'm voting to close this question as off-topic because it is about signal processing not physics
1d
comment Is 12-6 Lennard-Jones potential smooth confining potential?
I'm voting to close this question as off-topic because the answer is in the question. V doesn't go to infinity as r goes to infinity so it isn't a confining potential.
1d
comment Difference in time for clock in attic vs clock in cellar
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 Is curiosity enough as driving force for become a physicist?
This isn't a suitable question for this site, but you might want to ask it in the chat room
1d
comment Plucking Guitar Strings
Hi Julia 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 Self enery of a sphere
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 What is the potential difference between the plates? field around the plates? charge is on each plate?
Hi Eli 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 Amper`s Law and a flat
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 What is more fundamental: Geometry and Topology or physical matter?
This question dates back to Einstein himself (allegedly - whether he actually said the notorious wood vs marble quote seems unclear). There was no answer then and there is no answer now.
2d
comment electron in magnetic and electric field
Using vector addition, yes. It isn't obvious from your diagram what the direction of $\mathbf E$ is.
2d
comment electron in magnetic and electric field
Am I missing something? Don't you just add the two forces (vector addition) to get a total force $\mathbf F$ then use $\mathbf F = m \mathbf a$?