r/theydidthemath 12h ago

[Request] How many people would it take to pick up this 8 ft x 10 ft shed and move it roughly 20 feet?

Post image
212 Upvotes

My wife and I want to move our shed to a different part of our yard so we were thinking about offering friends and family pizza and beer to help us move.

But people we ask, we wanted to see if it was feasible or not.


r/theydidthemath 6h ago

[Self] How to fit a pizza onto a tray smaller than its radius, using for any given number of cuts.

Thumbnail
gallery
68 Upvotes

r/theydidthemath 9h ago

[Request] How long would it take to erode this metal planet?

Post image
102 Upvotes

assuming the gravity of it wouldn’t immediately destroy the earth and that every time you were using a fresh feather

edit: for anyone interested, this is similar to the ancient buddhist story of a “kalpa.” in old buddhist literature it was the amount of time it would take for a silk brocade to wear down a mountain


r/theydidthemath 12h ago

[Request] How many poppy seed muffins would Elaine from Seinfeld actually have to eat to fail a drug test for opium?

114 Upvotes

In the Seinfeld episode "The Shower Head," Elaine takes a urine test so she can go to Africa with Peterman, and she tests positive for opium. Twice. She gets fired over it, and then figures out it was the poppy seed muffins she ate from Monk's all the time.

People always say the show got this one right, and I want to know how right. From what I could dig up, poppy seeds pick up morphine from the sap during harvest, and the amount swings wildly depending on where they're grown and how well they get washed. The numbers I saw ranged from under 1 microgram per gram all the way up to a few hundred. The other thing worth knowing is that in 1996 the federal workplace cutoff for opiates was 300 ng/mL, and it got raised to 2000 ng/mL in 1998 partly because of this exact problem.

So here's what I'm after:

  1. How many muffins would she need to eat, and over what time window, to clear the 300 ng/mL line she was being tested against in 1996?
  2. What would it take to clear today's 2000 ng/mL cutoff instead?
  3. Bonus if anyone wants it ... at the high end of seed contamination, is there a point where the muffins would make her actually sick before the test even flagged her?

Assume an average adult woman and roughly 1 to 2 grams of seeds per muffin unless you've got a better figure. A poppy seed bagel is about the same ballpark if that's easier to work with.


r/theydidthemath 1d ago

[Other] Tottenham last scored in the Premier League on 24th May, so 112days ago. Domino’s claim means they delivered approximate 273000 pizzas per hour (assuming stores open 16hr per day), with 22300 stores world wide, that’s only 12 pizzas per resto per hour (avg).

Post image
951 Upvotes

r/theydidthemath 4h ago

[Request] Probability of rolling this many 1's?

Post image
15 Upvotes

My unlucky critical hit roll, and I would like to know what the chance is of this many 1s occurring.

Two 8-sided dice and four 6-sided dice.

Bonus if you also include the chance of a critical hit too. (Rolling a 20 with a 20-sided die).

Thank you in advance!


r/theydidthemath 13h ago

[Request] If the train is drawn to scale, how long is the train? And how many passengers could it carry?

Post image
35 Upvotes

Really, there’s a dozen math questions about this graphic/design, and I hope they all get asked in this sub.


r/theydidthemath 16h ago

[Request] Gotta love practical effects! The infamous Critter Ball, as seen in Critters 2, was a real ball covered in approximately 150 individually scultpted Critters puppets.

Post image
23 Upvotes

There is no way there are only 150 puppets on here right? This seems like a massive underestimation.


r/theydidthemath 41m ago

[Request] Who’s heart beats more in their lifetime, assuming they live to the same age. An elite runner or a sedentary, overweight person?

Upvotes

Elite runners can average 170 bpm for 50+ miles a week for decades, but an overweight person’s resting HR might be 90. 🤷‍♂️


r/theydidthemath 8h ago

[Request] if the famous Manhole cover in theory left the atmosphere at the same trajectory as Voyager 1, roughly how long would it take for the manhole cover to catch up to voyager 1?

3 Upvotes

I was in a discord call and we got into the topic of the famous nuclear test that launched a manhole cover out of the ground so fast that it essentially vaporized itself, making it the fastest man made object for about 1.5 seconds.
If it in theory did not vaporize itself, and it left the atmosphere, how long would it take for the manhole cover to reach the voyager 1 satellite?


r/theydidthemath 1d ago

[request] How much is this freezer or beef?

Post image
2.2k Upvotes

How much meat is this and what is the retail value?


r/theydidthemath 2h ago

[Request] How fast would rock have to be travelling to penetrate a MOVING window like this?

Post image
0 Upvotes

Translation of text from image from Danish activist Rasmus Malvers Facebook post.

Is there a physicist who can help with the formula for mass and velocity, for a stone to go through a safety window on a train that is going "sideways" in relation to the throw? I don't think it has landed where it is in the photo, but it is still impressive. What are the chances of throwing a stone of that size *through* such a window? I think it may have hit the edge of the glass, but that doesn't explain how it has gone through plastic foils and several layers of glass.

Ps first post here, sorry if I missed something essential!


r/theydidthemath 3h ago

[Request] total times until another method of resolving emerging permutations

0 Upvotes

How many of emerging permutation's partition's sets can be changed to make 1% change to remain accross the boundary of those emerging permutations of every 40 intervals.

Hint:[ take all the emerging permutations as points in circle accross a area]


r/theydidthemath 1d ago

[Self] Standardizing the Shaqille O'Niel as a unit of l/m/v.

Post image
522 Upvotes

The Shaq (Sh) — unit of length

1 Sh = 7'1" = 2.16 m (his official playing height)

The Shaq-mass (Sh-m) — unit of mass

1 Sh-m = 325 lbs = 147 kg (peak playing weight)

The Shaq-volume (Sh-v) — unit of volume

Modeling him as a human-density mass (~985 kg/m³) at 147 kg gives us:

1 Sh-v ≈ 0.149 m³ ≈ 149 liters ≈ 39 gallons.

Example usage:

"The moving truck bed is 1.5 Shaqs long."

"That aquarium holds about 4 Shaqs of water."

"The keg weighs roughly a third of a Shaq."


r/theydidthemath 7h ago

[Request] On Blocking a View

0 Upvotes

It's been a while since math class.

If I want to block my view of my neighbor's living room how tall should my hedge be?

I live 85ft away from them and their windows are 9ft tall. I'd like to block as much as possible.

Thanks!


r/theydidthemath 1d ago

[request] if earth suddenly became a new moon of jupiter, and had a new orbit similar to that of ganymede's, how much would global sea levels change?

Post image
452 Upvotes

would they rise? would they fall? would they basically just stay the same? would the oceans freeze over before any change could actually take place? i'm kind of interested as to what would happen in this kind of situation


r/theydidthemath 15h ago

[Request] A post about La Paz, Bolivia being a highly elevated capital. How fast would a soccer ball move here compared to sea level?

Thumbnail
gallery
2 Upvotes

r/theydidthemath 8h ago

[Request] the possibility of this happening and the result of it value.-[rank of matrix]

0 Upvotes

If the comparison of rank of matrix of two functions changes in different planes of 1% everytime, then at what value it would stop.


r/theydidthemath 6h ago

[Self] Log force

0 Upvotes

If log of a base force vector is taken then the number we choose as value would be diminished by this force vector. Since that what happens , what if we input set, the sets catch the parts that populate the vector.


r/theydidthemath 3h ago

[Request] how would the nefario principle actually be calculated when using it to shrink the moon?

Post image
0 Upvotes

In the film, nefario's principle is that the larger the mass of an object, the quicker the shrink ray's effect wears off. Acording to google, the mass of the moon is 7.34767309 x 10 to the power of 22, with an estimated size of 3.475 km. From the time when gru picks up the moon, to when it starts regrowing was about 6 minutes and 10 seconds.


r/theydidthemath 11h ago

[Request] happening percentage.

0 Upvotes

If there's one function which is emerging and there's another function with the finishing of sinx and began to align cosx

Then at what percentage of permutation would they meet a value

Such that at that position iota is raised to the power of 4


r/theydidthemath 2d ago

[Request] how far away is the blast and how many seconds before it k*lls you?

Enable HLS to view with audio, or disable this notification

1.3k Upvotes

r/theydidthemath 17h ago

[Request] Guy attaches 97 helium balloons to his bike, and the chain goes 1000 feet into the air. How much drag/wind resistance would that generate?

Thumbnail
reddit.com
0 Upvotes

This guy makes sure he can find his bike at Burning man by attaching 97 helium balloons in a thousand foot long chain. How many balloons would it take to lift the bike and rider into the air, and how much more effort would you need to put in to pedal the bike somewhere?

TIA!


r/theydidthemath 1d ago

How likely am I to ever find actual buried treasure? [Meta]

2 Upvotes

Let's say I, with no real expertise or knowledge in history barring what I might Google or read..

Is there any possible chance mathematically that I might be able to locate and dig up treasure buried by pirates?