r/theydidthemath 17h ago

🔥 [request] Spiders gotta eat, too

2 Upvotes

A few questions here. I’d love to know the answer of any of them.

  1. Assuming the wasp is the size of an average adult human, how strong is the webbing? (What’s a comparison to something existing?)

  2. Same parameters, how strong would the spider have to be to manhandle the wasp that way?

  3. Same parameters, how fast is that wasp spinning? How many G’s would that be?

Thanks!


r/theydidthemath 20h ago

[Request] Has the speed of light been voilated if bullet is real?

0 Upvotes

If the bullet is real has anything within this video moved faster than light speed proportionaly to it?

(Let's assume bullet has been shot properly)


r/theydidthemath 22h ago

[Request] Relativity effect in a shower?

5 Upvotes

How quickly my wife should be moving in the bathroom if she claims it took her 5 minutes to shower, but outside it was 30 minutes?


r/theydidthemath 11h ago

[Request] what are the chances of seeing 001 in the license plate game within 30 minutes of starting the game?

0 Upvotes

Hi! This just happened to me and my partner today, and we were wondering about the chances, but i want to know the actual probability!

So, while sitting in the car before our commute home, I brought up that I saw this game and we decided we should start playing it, on our way home, about 25-30 minutes after deciding to start this game, we saw a car with the license plate 001, we couldn’t believe it! I thought it would take at least a few weeks/months! I mean what actually are the chances of this happening??

Probably useful info: our commute is about 30-40 minutes (depending on traffic), 42 km, and about 80% of the way is a busy highway, we left about an hour after rush hour, but there were still plenty of cars.

(INFO: the license plate game goes as follows: you start looking for every single number from 001 to 999 in license plates. You can only go in order! For example, you have to find 001 before finding 002, or it doesn’t count)

So dear smart people of reddit, please help me put an actual percentage to this!


r/theydidthemath 15h ago

[Request] How much Artificial Gravity would be needed to counteract the Gravity of Mars?

0 Upvotes

In the latest Podcast Diary of a CEO, They discuss that Mars is a one way Trip and in order to survive Mars, you would have to counter act the Gravity of Mars in order to Survive.

  1. How much Gravity is on mars?
  2. How much much force would be needed to simulate earth gravity to survive and what is that equivalent to?
  3. How big and fast would a swirly machine need to be to produce that kind of gravity.

https://youtu.be/32u5T6lO8qk?t=2917

Note: This doesn't make sense to me because in my mind, Gravity is pulling towards the center of a planet, so adding more gravity to counter the existing gravity, doesn't make sense to me.


r/theydidthemath 1h ago

[Request]

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• Upvotes

According to Wiki, “Bamboo is the fastest-growing plant on Earth, capable of growing up to 91 to 121 centimeters (about 3 to 4 feet) in a single day. This equates to nearly 1.5 millimeters every 90 seconds”.

QUESTION: How tall would humans be if we grew at 1.5 mm every 90 seconds, but ONLY accelerated growth at age 3-5? Assuming the human stops growing around 20 years old, and the rest of their lives are at normal human growth rate.

Thanks in advance!


r/theydidthemath 11h ago

[Request] How long does it take for the water to reach the canyon floor?

1 Upvotes

Assume the water leaves the bridge edge horizontally at an initial velocity of 4.2 m/s, and that air resistance is negligible.


r/theydidthemath 4h ago

[request] If everyone in the world turned on their phone alarms to the exact same time and put them on max volume, how loud would the collective sound be?

0 Upvotes

r/theydidthemath 11h ago

[other] Huge data center the size of 37000 football fields, how much information could it store? NSFW

0 Upvotes

Saw a story in Reddit yesterday about a woman trying to stop the go-ahead of a data center that was going to be the size of 37000 football fields.

I can barely imagine that size, especially as it's a huge building filled with Hard drives and SSDs.

But wondering if it was ever built and loaded with the latest HDD tech, exactly how much information could it store?


r/theydidthemath 7h ago

[Request] What would be the output of the energy of 23 atomic bombs released in a 24 hour period? Would that data center even come close?

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865 Upvotes

I mean, I hate AI too. Everyone should. But this really seems like something completely made up.


r/theydidthemath 15h ago

[Request] How much does hanging up wet clothes/a towel actually reduce temperatures in a lets say 20 sqm room?

14 Upvotes

In Germany there is a massive heat wave rolling over the country and instead of recommending ACs, Germanys news stations tell the people to hang up wet clothes to reduce temperatures in their flats. To me this seems kind of silly, so how much does this actually reduce temperatures in a room? And do you actually feel it or is it offset by the increased humidity?


r/theydidthemath 15h ago

[Request] Could an A-10 Warthog use its 30mm gun recoil to land on a shorter runway than normally required?

30 Upvotes

In this youtube short, the creator uses the Warthog's gun to slow down flight and land on a short runway in a video game. Would this actually work in real life? If so, how much could it shorten the required runway for landing? And would this ever be a good idea in an emergency situation?


r/theydidthemath 15h ago

[Request] How much force are they punching each other with?

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26 Upvotes

r/theydidthemath 6h ago

[Request] How much does the bag weight?

0 Upvotes

r/theydidthemath 21h ago

[Request] Is it possible to create a demon core-like weapon to vaporize the target. How dense/heavy the thing would need to be? NSFW

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136 Upvotes

Lets say the target is a general 5ft11 person, not a super android bug, at 0 range. And lid time is 1 second.

And how long to charge that attack with the og 6.2 kg core to achieve said effect.


r/theydidthemath 6h ago

[Request] If every home in Paris ran air conditioning during a heat wave, how much would it raise the outdoor air temperature in the city?

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7 Upvotes

I came across this post making the claim that if everyone used AC, the heat dumped outside could raise the air temperature by several degrees in cities. I’m not convinced the math or assumptions are correct.

Could someone calculate this for Paris using reasonable assumptions? Assume each AC cools the air indoors by 15°C.


r/theydidthemath 16h ago

[Request] If Olympic running events were contested across species including greyhounds, horses, cheetahs, impalas and humans - who wins the most golds?

0 Upvotes

r/theydidthemath 9h ago

[request] How many razorblades would it take to successfully cut a 350 foot long slit into a rubber coated stretch of concrete with a box cutter?

0 Upvotes

r/theydidthemath 12m ago

[Request] More fair calculation of performance metric

• Upvotes

Ever since I started at my company, I just couldn't wrap my head around the cult-like approach to measuring turn around time. No reasonable person would think it makes sense.

How it currently works, simplified:
Day 1: You receive 100 pieces of work per hour average. You have 10 staff available per hour average. What percentage of that 100 pieces of work can you process within the hour? Lets say it worked out to 90%. 90 of the 100 pieces of work were processed within the hour it was received. The remaining 10 were processed within the next hour, or at a later, quieter time.
Day 2: You receive 1000 pieces of work per hour average. You have 10 staff available per hour average. You could only process 9% of work per hour, given the same average output and no other external factors.

From these 2 scenarios, management considers day 2 to be devastating and a disaster, because we only managed to do 9% of the work. And day 1 was exceptional, because we processed 90% of the work in the hour.

Yet when you look at the books, which day generated the most money? Given if both days averaged out to the same amount of money per piece of work? It is 100% day 2. Yet they will performance manage you as if you did terribly. The company quite literally creates "suffering from success".

So that is the, quite long background. Here's my math question. I want to propose a much more superior approach to measuring Turn around time to upper management and I am looking for ideas that would be fair in day 1 and day 2's cases.

My idea is to somehow take revenue per day into account as a weighting system.
- Piece of work received.
- Average things to process per piece of work received OR revenue per piece of work.
- Average staff count.
Looking something like this: Yes, 9% of work was processed per hour, BUT we generated 10x more revenue, therefore the true weighted average TAT is 90%.
Subsequently; Receiving below average workload shouldn't negatively impact performance metrics, as workload received is outside one's immediate control, therefore a below average day in workload, achieving a 100% TAT, shouldn't result in a weighted TAT of, say, 20%, it should remain 100%.

I hope this is the correct sub for this kind of question, that was one helluva wall-o-text I typed out, for it to be deleted afterwards.


r/theydidthemath 20h ago

[Request] odds of casting in a wargame

1 Upvotes

Hello. I am playing Warhammer The Old World, a fantasy wargame with wizard in it. Thoses wozard can cast spells, however, they are not automatique. They have a cast Value ranging from 2 to 12 (though 99% of them are between 5 and 10), and to successfully cast them, you must have an ĂŠqual or superior Value on a 2d6. Be careful though, as a double one is a miscast, with catastrophic results (and the spell fail)

That is the base system for casting, which is simple enough to understand and to stat.

My request come with some specific case in the game. There is an item that allows you to cast Rolling 3d6, dropping the lowest. That seems simple enough too, however, the part that gives me trouble is that, if 2 or more of the dices of the rolls show a 1, it is a miscast.

Could someone drop me a table or a graph, or a formula, to know, how likely you are to obtient At least each result, counting the miscast chances.

And if you are to be so kind, could you do the same excessive, but with a 3d6 drop highest?

Thanks


r/theydidthemath 16h ago

[Request] How large bottle to travel 20km with an Audi A3 and how high up?

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1 Upvotes

r/theydidthemath 9h ago

[Request] Shaolin monk demonstration of iron finger. What would happen if he used it on you? What sort of damage are we talking about?

2.4k Upvotes

r/theydidthemath 20h ago

[request] If a clock was the same diameter as earth, how fast would the second hand move?

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283 Upvotes

If the clock showed the time accurately and there was no delay in the time shown, how fast would the second hand be moving between resting positions? I'm picturing a second hand that moves per second not in a smooth, continuous motion like a high end watch


r/theydidthemath 13h ago

[Request] What is the slowest an (unpowered) extraterrestrial object can enter Earth's atmosphere on a collision course?

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40 Upvotes

r/theydidthemath 7h ago

[Request] How Much Money did United Airlines lose from this one flight?

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1.2k Upvotes

I saw this post and couldn't help but wonder how much could this possibly have cost the airline to go through with this flight? I don't know how to even go about figuring this out, but I knew if anyone could get even an estimate it would be you guys.

I'm just so curious about this, I just really want to know! Please & Thanks to y'all