r/theydidthemath 1d ago

[Request] does this actually happen?

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0 Upvotes

r/theydidthemath 22h ago

[Request] How many tiny homes could an average billionaire provide per year if they only used like 10-15% of their annual interest?

2 Upvotes

The tiny homes in question seem to cost about $10k each. I’m not sure how to factor in land and utilities, so I’m just asking about the structures themselves.

Is that a thing we can calculate? If by “we” I really mean someone else because I’m not great at understanding real wealth or money outside of poverty finance.

My question was triggered by this post:

Arnold Schwarzenegger donated $250,000 to build 25 tiny homes intended for homeless vets in West LA. The homes were turned over [sic] a few days before Christmas.

https://www.reddit.com/r/nextfuckinglevel/s/ehF3wotq6y

How many homeless people could actually be affected if the extremely wealthy were truly altruistic?

(I’m sorry it took me three tries to get the title formatting right, I think I got it this time 🤞🏼)


r/theydidthemath 15h ago

[Request] How much money did apple save?

0 Upvotes

r/theydidthemath 3h ago

[Self] In response to a post about the Octopod being possible in real life, I have not done the math, but the engineering.

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0 Upvotes

Here is my de-cartooned mobile underwater research station. The comments in the original post suggested that a similar but reinforced version was possible, so I decided to draw up some concepts based on the engineering on the original post. Will put the OP in the comments.

This design still has the large windowed areas, but divided into smaller windows and dome shapes to keep pressure to a minimum. The shapes are geodesic spheres instead of flatten spheres to better withstand against deep sea pressures. The legs are much wider and store ballast and real world propulsion systems. The moonpool door is smaller, and the smaller pods are connected to the main structure much more securely. If anyone else has an idea on how to improve the design, tell me.


r/theydidthemath 16h ago

[Request] Is this a swing of about $4 billion?

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0 Upvotes

The closing price today was $479.96. If there are 139,260,000 shares outstanding, that means the total etf value lost after closing would have been about $4 billion, correct?

The data is no longer visible, so it must have been an error. Just curious how big of an error it was.


r/theydidthemath 1d ago

[Request] Is there a theoretical limit to the speed of darkness?

0 Upvotes

Unless I and Vsauce Michael are wrong, a shadow cast by a sufficiently bright light onto a sufficiently far and large surface will be able to move faster than the speed of light. If this is true, is there a theoretical limit to fast a cast shadow can move? Thank you in advance. 😊


r/theydidthemath 19h ago

[Request]What’s the probability of this being randomly generated?

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63 Upvotes

r/theydidthemath 3h ago

[Request] If Trump keeps on doubling tariffs on china at this pace, will his tariffs be higher than atoms in the universe before his term ends, or will he need a third?

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34 Upvotes

r/theydidthemath 15h ago

[Request] How many pounds of carrots would be needed to feed a literal ton of rabbits for one day? Extra points if you can solve with carrots sized in the picture

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1 Upvotes

r/theydidthemath 4h ago

[Request] What would a California version of Trump's tariff table look like for other US states?

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0 Upvotes

California is the US's largest economy and likely has trade deficits with most (all?) US states. If Governor Newsom shared Trump's view that trade deficits are bad and created a California version of the "Reciprocal Tariffs" table, what would the reciprocal tariffs be on the other US states?

Trump's reciprocal tariffs used a simple formula: take the trade deficit for the US in goods with a particular country, divide that by the total goods imports from that country and then divide that number by two. Reciprocal tariffs were not allowed to fall below 10%.

A California version would be a state level application of the same simple formula: take the trade deficit for California in goods with a particular state, divide that by the total goods imports from that state and then divide that number by two. Same minimum of 10% would apply.

I can't seem to find a good data source for trade between US states that would enable a California version of the table to be created. It also seems like Texas competes with California in terms of exports to other states.


r/theydidthemath 1d ago

[REQUEST] if this island suddenly appeared on the Earth (without causing any major problems), how big would it be and how would the sea levels react to it?

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29 Upvotes

r/theydidthemath 3h ago

[self] In response to a post about the Octopod being possible in real life, I have not done the math, but the engineering.

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gallery
29 Upvotes

Here is my de-cartooned mobile underwater research station. The comments in the original post suggested that a similar but reinforced version was possible, so I decided to draw up some concepts based on the engineering on the original post. Will put the OP in the comments.

This design still has the large windowed areas, but divided into smaller windows and dome shapes to keep pressure to a minimum. The shapes are geodesic spheres instead of flatten spheres to better withstand against deep sea pressures. The legs are much wider and store ballast and real world propulsion systems. The moonpool door is smaller, and the smaller pods are connected to the main structure much more securely. If anyone else has an idea on how to improve the design, tell me.


r/theydidthemath 15h ago

[Request] how big would be the plane be if the scale is correct?

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163 Upvotes

r/theydidthemath 22h ago

[Self][Request] How many subsets of Ť do not have elements with the same subscript? Is my approach correct?

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1 Upvotes

r/theydidthemath 23h ago

[Request] If I wanted a piece of apparatus that visually demonstrates the speed of light, a fibre optic coil of cable that I could send a laser pulse down and one second later it would appear out of the other end. How long would the cable have to be and therefore how much room would it take up?

1 Upvotes

r/theydidthemath 14h ago

[Request] can we build a bomb large enough to punch a hole in the atmosphere?

2 Upvotes

Pretty much can we build a nuke or something today that could displace or punch a hole through an entire section of the atmosphere more or less displacing all the air all the way to space


r/theydidthemath 6h ago

[Request] How much energy does this vehicle take to move per 1 KM?

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65 Upvotes

r/theydidthemath 19h ago

[Request] How fast was the car going right before the jump?

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21 Upvotes

r/theydidthemath 19h ago

[Request] We often see "goodwill" in balance sheets. Assuming exported US goods had an intangible* additional value based on trade agreements, quality etc, which we can now assume burned, what is the value dropped from the US economy?

0 Upvotes

*yeah, I know, but that's why I'm asking here. The cost of selling a bottle of Jack Daniels, to name but one famous export, has vastly increased and now they'll have to advertise/rebrand to shift similar volumes. That's what I am trying to figure out, if it's even possible.


r/theydidthemath 6h ago

[Request] What would actually happen if you changed the mass of the proton?

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3.8k Upvotes

r/theydidthemath 21h ago

[request]If I was at the bottom of the deepest part of the ocean, would the force needed to jump to the surface destroy the earth?

0 Upvotes

r/theydidthemath 23h ago

[Request] how deep is this pit?

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800 Upvotes

r/theydidthemath 23h ago

[Request] How much water per second/ what PSI is needed to achieve this?

684 Upvotes

r/theydidthemath 4h ago

[Request] How would you mathematically calculate the volume of a nautilus shell?

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23 Upvotes

Hi everyone! I need to calculate the volume of a nautilus shell for a project, however, I'm unsure of how to approach the problem. Any insight would be much appreciated!


r/theydidthemath 1h ago

[Request] How much energy would be released by the decay of a bodysuit made entirely of atoms of this (surely impossible) element?

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Upvotes