Mark Eichenlaub
Reputation
33,336
271/100 score
 Oct 28 comment How is one process reversible and its reverse non-reversible? Yes. That's right. Oct 28 answered How is one process reversible and its reverse non-reversible? Oct 27 revised Why are basic physics problems neglecting to include atmospheric pressure? added 2 characters in body Oct 26 awarded Nice Answer Oct 26 comment Why are basic physics problems neglecting to include atmospheric pressure? Because the air underneath the block is exerting approximately equal pressure upwards. If you truly made a seal with the table so that no air could get it, it would be extremely difficult to lift the block. This is how a suction cup works. Oct 26 answered Why are basic physics problems neglecting to include atmospheric pressure? Oct 26 revised Why are basic physics problems neglecting to include atmospheric pressure? added 34 characters in body; edited title Oct 26 answered Trajectory of a projectile in a three dimensional space Oct 24 awarded kinematics Oct 23 comment How do I use the kinetic energy formula using mass as lbs and velocity as mph? that's the idea, but I don't think you converted to kg correctly Oct 23 revised How do I use the kinetic energy formula using mass as lbs and velocity as mph? edited body Oct 23 comment How do I use the kinetic energy formula using mass as lbs and velocity as mph? en.wikipedia.org/wiki/Pound_(mass) Oct 23 answered How do I use the kinetic energy formula using mass as lbs and velocity as mph? Oct 23 comment Why don't we include the adhesive and cohesive force while calculating rise in a capillary tube? The derivation I gave used $\gamma$ for the energy per unit area of the water-tube interface. You can put whatever name on that you want. I did not reference the water-air interface. Oct 23 comment Why don't we include the adhesive and cohesive force while calculating rise in a capillary tube? I can't fathom why you think they're being omitted; I explicitly included them as $\gamma$. Oct 22 answered Why don't we include the adhesive and cohesive force while calculating rise in a capillary tube? Oct 22 comment Why don't we include the adhesive and cohesive force while calculating rise in a capillary tube? Your second equation does not follow from the first equation. Oct 16 comment Why can we find forces like this using energy methods? Gerard, I am describing the asymptotic behavior of the integral to first order in $\mathrm{d} \theta \equiv \theta_1 - \theta_0$ Oct 16 answered Why can we find forces like this using energy methods? Oct 9 awarded Nice Answer