So what is an easy to use or no think thing I could use a pi 5 for?
It sounds like you really want something that works "out of the box," in which case, I would look for projects that have disk images available.
This severely restricts what you can do with it, and as others have mentioned, is a bit antithetical to the Pi's original purpose as a tinkering machine. But you may find something you like.
The most basic would be to just use it as a desktop replacement.
Does Minecraft server have a known memory leak or something?
As a hack you can always set up a cronjob to automatically reboot at a time when you won't be using it, but not sure if that defeats the purpose of a Minecraft server...
Take numbers with a grain of salt, e.g., this link says a 7200RPM 160GB SATA drive from 2004 is $107, or about $0.67/GB, instead of the $5 claimed in post.
Not at all in this case though! Or rather, it depends on your perspective.
"Why doesn't electricity leak out the outlet?" is a good question, if you know nothing about electricity.
"Why doesn't electricity leak out the outlet?" is a little stupid, if you know a little about electricity.
"Why doesn't electricity leak out the outlet?" is a great question if you know a bit more about electricity (because it does leak out, it's just that 50/60Hz doesn't couple to freespace well unless you have a colossal antenna).
As to this question, light in moving media: https://preprints.opticaopen.org/articles/preprint/Fizeau_Experiment_Investigating_the_Speed_of_Light_in_Moving_Media/25441108?file=45147313
It's a matter of perspective and use
high density one place means you can have open space somewhere else, for a given amount of land.
I'd much prefer a few large dense housing complexes, surrounded by green space, than suburban sprawl.
Sounds like maybe you want acoustic impedance ? Just like optical index mismatch, or electrical impedance mismatch, you get reflections at discontinuities. Neat stuff!
Not exactly sure what you mean by air-water-air "dampening," but my suspicion is that you're referring to sound being reflected at each interface, so the transmission is reduced. Antireflective coating, index matching, impedance matching are all rich topics in physics and electronics!
50kW class laser.
Another source claims 1um wavelength with individual 1.5kW lasers in a hex pattern
unclear if it's a phased array (would be awesome) or just trained on the same target (source mentions they are "combined using a mirror" so probably the latter).
Sounds like maybe high power YAG?
I just want a button that rewinds 10-15s, turns on subtitles, and then turns them off when it catches up again. It's a pattern I do manually with some regularity.
I suppose with Jellyfin/OSS, this is something I could implement myself if I was so inclined...
Hmmm, I'm not sure I understand...
A large explosion every second has units of power, not energy. So to me this is suggesting that the train is putting out power equal to its kinetic energy per second. That's certainly not the case
it implies that the train is powerful enough to accelerate to the speed in 1s, which is definitely not true.
But that's just my interpretation.
~~I don't think your units make sense
kinetic energy has units of energy, but "kg TNT per second" is power (about 4MW). (I think just remove the "every second" and it's correct?)~~
Edit: parent edited comment.
see my other comment where I define vegetables
See this is why you're arguing with everyone and coming across as (at best) a troll
you've defined your position to be correct, which of course means in your world you cannot possibly be wrong.
I split mine in two. It's easy but makes you look like a badass. A banana splitting badass.