vela's latest activity
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vela replied to the thread Complex Numbers (Laurent Series).Your teacher is not infallible, so I'd reach out for clarification about the intended function and intended domain. Note that your... -
vela replied to the thread Stacked blocks & pulley system.The problem statement explicitly says ##M## is heavy enough to cause the masses to slide up the incline. -
vela reacted to jack action's post in the thread Problem about units conversion: cm^2 --> m^2 with
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No, it is 0.01 m² = 100 cm². The exponent on the units is important: (0.1 m) X (0.1 m) = (0.1 X 0.1) (m X m) = 0.01 m.m = 0.01 m²; (10... -
vela replied to the thread Errors and significant figures.The idea behind error propagation is to calculate the uncertainty in the result. Once you know the uncertainty, it tells you where to... -
vela reacted to haruspex's post in the thread Will Y-Direction Motion Cease with X-Direction Acceleration Only? with
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I suggest using the subjunctive here. -
vela replied to the thread Other Which branch of engineering is more physics heavy?.I think so too. There's some overlap, but there can still be a pretty big gap between the two majors. To properly prepare for physics... -
vela replied to the thread Site Usability nitpick -- Hyperlinks should be underlined.Is PF a link-heavy site? In my brief look at a number of sites the other day, I noticed most sites don't underline every link, but they... -
vela replied to the thread Site Usability nitpick -- Hyperlinks should be underlined.Kagi search results, on the other hand, do have underlined links. So do the sites for the New York Times, the LA Times, the Washington... -
vela reacted to robphy's post in the thread Site Usability nitpick -- Hyperlinks should be underlined with
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At the recent AAPT meeting, one of the updates to Glowscript/WebVPython is an improvement to better support accessibility. possibly... -
vela replied to the thread Need a book on Modern Physics to supplement Griffiths QM.Then I think it would help, as @robphy suggested above, if you could give us an example of a roadblock you're running into. Maybe you... -
vela replied to the thread Confusion In Writing Identical Particle Wavefunctions.It is. My point was that if same spin meant both spin-up or both spin-down, it would correspond to only two of the triplet states and... -
vela replied to the thread Confusion In Writing Identical Particle Wavefunctions.The same thought occurred to me; however, the solution explicitly lists all three of the triplet states and claims there's a threefold...