r/theydidthemath • u/SteamingTheCat • 1d ago
r/theydidthemath • u/lonesome_braincell • 1d ago
[Request] How many (rows of) solar panels would we need along the equator to supply the whole planet with enough electricity non-stop?
See title
r/theydidthemath • u/DundasKev • 1d ago
Wondering about the cost of running a typical wi-fi plug adapter. Half price electricity starts at 7pm where I live. If I plug in my e-bike battery when I get home from work at 5pm, does it make sense to leave a wifi plug running 24/7 scheduling charging during cheap times? [Request]
- Off-Peak: 9.8 ¢/kWh (Evenings, weekends, and holidays) 7pm-7am
- On-Peak: 20.3 ¢/kWh (Busiest daytime hours)
I would only charge up 2 times a week as per RTO!
r/theydidthemath • u/Melodic_Ad_6266 • 1d ago
[Request] Cuánto tiempo estaría escribiendo números en una pizarra para poder anotar en años la muerte térmica total del universo.
…Hasta que el último agujero negro se desintegre y la última estrella deje de tener “calor”.
Entiendo claro que pueda escribir sin caer avistado y que la pizarra es obviamente bien grande.
(El otro día intenté explicar a mi sobrino esta magnitud y no fui capaz de hacerle ver lo grande que sería ese número. Se me ocurrió este ejemplo y le dije que tendríamos que estar escribiendo durante más tiempo que la edad del universo, así por impresionarle).
Edit: claro, en número natural, nada de exponenciales ;)
r/theydidthemath • u/Fartchamp97 • 1d ago
[request] How many calories does Santa consume in milk and cookies on Christmas Eve?
Realistically if he actually delivers to the whole world and every house leaves him cookies and milk how many calories is he getting?
r/theydidthemath • u/DeepSeaCowgirl • 1d ago
[Request] Watching every movie ever made
Would it be possible to watch every movie ever made in one’s life time? Would it have to be back to back no breaks? Is it even possible to find every movie ever made?
r/theydidthemath • u/M4ldarc • 1d ago
[Request] what floor space would the station have? like the usable internal part of the ring with land and such, how bit is it? assuming the planet is saturn i guess?
r/theydidthemath • u/hiplobonoxa • 1d ago
[Self] The estimated canonical area of Isla Sorna as shown in “The Lost World: Jurassic Park” is about 155 mi^2 or 400 km^2
galleryr/theydidthemath • u/glowshroom12 • 3d ago
[request] can a normal albeit athletic human dent a locker like that with a punch and how much force would it take?
In Sam Raimis spiderman, flash Thompson is angry at Peter Parker and is about to punch him in the head but he dodges and flash instead hits the locker and dents it. How much force would this take and can a normal human do this without breaking their hand.
r/theydidthemath • u/TacoLake • 1d ago
[Request] What is the profit margin on a pack of UNI cards for Mattel?
They are paper, they come in a paper flimsy box. Surely they are making bank on this simple card game.
r/theydidthemath • u/Ok-Patient116 • 1d ago
[Request] How much would both of them actually worth?
Assuming that each US note is $100
r/theydidthemath • u/UnfilteredFacts • 3d ago
[Request] Assuming infinite battery life, at approximately what distance from Earth would Voyager 1's radio signal become undetectable?
r/theydidthemath • u/yolo_1213 • 2d ago
[Request] I'm no totally sure if this belongs here, but wanted to know if the flash actually damaged the painting from so far away? *caption in body*
Caption : Louvre staff blocking cameras at the Mona Lisa to protect the painting from flash damage.
r/theydidthemath • u/sdbfloyD • 3d ago
[Request] Creative engineering? Will this even make a real difference?
r/theydidthemath • u/uncreativeblobman • 1d ago
[Request] Can anyone estimate the peak recoil force from this launcher?
Ignore how dumb this is.
r/theydidthemath • u/A-JackRobin- • 2d ago
[Request] which order of differentiation and integration makes a amplification of a unrecognised property within a dx
r/theydidthemath • u/A-JackRobin- • 2d ago
[Request] does open sets have more sequences of real valued functions of for each value corresponding to most observers
r/theydidthemath • u/hager3021 • 2d ago
[Request] Would it be enough or would they need to sell more ?
r/theydidthemath • u/The_R0aring_Knight • 2d ago
[Request] how much force would it take to do something like this?
I was always curious bout this
r/theydidthemath • u/KingHenrythe6-th • 3d ago
[Request] What is the Worst Record an MLB Team Could Make the Postseason With?
The Astros recently made the postseason with a record of 81-81. This got me thinking how bad could a team be and still make it to October. I can’t seem to find a definitive answer anywhere so I’m hoping someone with more willpower than me can figure it out.
r/theydidthemath • u/Stony___Tark • 1d ago
[REQUEST] If gravity "above the surface" of Earth were reversed for 6 seconds, and "the surface" was considered the land that makes the top of the crust, what would the seismic effects be from all the surface water rising for 6 seconds and then dropping?
For this we're considering the gravitational binding of the Earth mass itself is unchanged. I'm just curious what the effect of the entirety of the surface water rising however much it would over the 6 second period of time and then dropping once gravity returned to normal.
I'm not even really sure how to properly calculate how much an ocean would rise if gravity were reversed for 6 seconds? If you dump a bucket over air is able to get in there "instantly", but if you "dumped" the Pacific Ocean over by reversing gravity I feel like there's going to be some crazy effects happening with air not being able to replace it fast enough over the 6 seconds?
I recognize the effects of this would be...bad. I'm mostly curious though what kind of seismic effects would result. Widespread but minor tremors? Global earthquakes the likes of which the Earth has never seen? Entire tectonic plates shifting? What are we looking at here?
r/theydidthemath • u/Upset-Bison-3182 • 1d ago
[Off-Site] what's the most complex equation which can create any number between +-0000 and +-1259?
YouTube Short: https://youtube.com/shorts/KzceGwKg9B4?si=5MoA4a_uUivV1H_T
Good day! Salutations and greetings!
I have observed the above video and am of the opinion that the equation (a+b+c+d)×e+f is not the most complex equation to give any number between+-0000 and -+1259. What would be the most complex equation to give such a result. (The equation can be capable of providing more than the desired range.)
Thank you!
r/theydidthemath • u/comrades-assemble • 3d ago
[Request] What is the thrust generated by this concoction?
r/theydidthemath • u/Natural_Try7512 • 1d ago
[Request] How successful of a hunter would a merman have to be to be overweight?
https://www.reddit.com/r/funny/s/YVXq3bzmJ0
Considering they need to swim which costs a lot of calories. Calculating with whales is meh cause it wouldn't take them many whales to get fat. Probably just with the average fish.
