jbriggs444's latest activity
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jbriggs444 reacted to Herman Trivilino's post in the thread Reconcile poundforce w/slug and lbmass with
Like.
Which is illegal if you're using the scale for commerce. Buyers would benefit, but sellers would lose money. An unsatisfactory... -
jbriggs444 reacted to Chestermiller's post in the thread Reconcile poundforce w/slug and lbmass with Like.
No. The 32.2 is fixed. And the measured force at the equator would be < 1 lb.
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jbriggs444 reacted to gmax137's post in the thread B Energy transfer water > air in a greenhouse with Like.
This can be a rather complicated problem to work out from first principles. I would start by looking for technical info from greenhouse...
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as is asking to guess a woman's age :wink: :wink: EDIT Ohhh I just noticed the typo of the person who originally noticed it I just...
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jbriggs444 replied to the thread Collection of Lame Jokes.Yes, though I had in mind that pretty much every bomb is more diffuse after detonation than before.
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jbriggs444 replied to the thread Collection of Lame Jokes.I would think that a diffuse bomb is something to avoid.
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jbriggs444 reacted to Dale's post in the thread B Can an expanding EM be quantized: E=mc^2? with Like.
Yes. That is the only kind of photon that exists. They can (e.g. a diverging lens). They don’t always (e.g. a converging lens). Radio...
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jbriggs444 replied to the thread Reconcile poundforce w/slug and lbmass.You may want to read about geometrized units. Indeed, in this system Newton's universal gravitational constant ##G = 1##. I'd mentioned...
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jbriggs444 reacted to A.T.'s post in the thread Problem with pulleys - two fixed and one movable with Like.
I think I misunderstood this part. You simply say that in the rest frame of the axis of a pulley, both rope segments at that pulley have...
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jbriggs444 replied to the thread B Conservation of kinetic energy in expanding space.In models with an initial singularity, there is no inception event. The singularity is not part of the manifold.
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jbriggs444 replied to the thread When should a beginner programmer learn vims/emacs?.I use vi for one simple reason. It is always there. Drop me into a shell prompt and I can start using vi immediately. If you drop me...
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jbriggs444 replied to the thread Problem with pulleys - two fixed and one movable.In this situation, depending on the value of ##M##, the outer ropes could accelerate up, down or not at all.
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jbriggs444 reacted to weirdoguy's post in the thread B Conservation of kinetic energy in expanding space with Like.
Which in practice means that we see expansion only at a very large scales. Expansion means that distance between non-gravitationally...
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jbriggs444 replied to the thread B Conservation of kinetic energy in expanding space.An atom is not expanding.
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jbriggs444 replied to the thread Problem with pulleys - two fixed and one movable.You may be thinking of a fixed array of pulleys. In that case, the weight on one end moves with an acceleration opposite to the weight...