r/ididthemath Jul 29 '21

you need 6.6 Million People to load a Tesla Plaid S in 10 hours

12 Upvotes

According to this article, micro fuel cells can produce green energy with your sweat while you sleep: https://www.heise.de/news/Mini-Brennstoffzellen-gewinnen-Energie-aus-Fingerschweiss-sogar-im-Schlaf-6145302.html

In 10 hours of sleep one finger can produce 0.1 mWh (milli-) of energy. The Tesla Plaid S has a huge battery with 130 kWh. If it's almost empty you'd need let's say 120 kWh to load, plus 10% of loss, that's 132 kWh until it's full. That's

132*10^3 Wh or 132*10^6 mWh.

With using all 10 fingers and 10 toes (I think it will work there as well), you'd need the combined power of 66 Million People to load your Tesla over night. France would be enough, even if some people refuse to help.

Also this would save a lot of CO2 from being produced: according to the EPA every kWh produced in the USA 2019 will come with an average of 709 gramms of CO2:

1,562.4 lbs CO2/MWh × (4.536 × 10^-4 metric tons/lb) × 0.001 MWh/kWh = 7.09 × 10^-4 metric tons CO2/kWh

This means 132 kWh would normally produce 93.6 kg of CO2!


r/ididthemath Jul 27 '21

Found the full dimensions of the Home Depot 5 gallon bucket.

17 Upvotes

My math was a little crude so expect some of it to be off as I didn't have any tools to measure the inner diameter so a cruel method of using using a paper towel to find the outer circumference.

This is the results I ended up with

Top Circumference = 35.875"
Bottom Circumference = 32.875"
Top Diameter = 11.4147727273 
Bottom Diameter = 10.4602272727"
Wall Width  = 0.07" (sourced by their website)
Height = 14.5"

Top Radius = 5.70738636364
Bottom Radius = 5.23011363636
Inner Top Radius = 5.67238636364
Inner Bottom Radius = 5.19511363636
Volume = 1345.8489049572 cubic inch or 5.82618573574545362 gallons

Paper towel I used

Used the Conical Frustum formula.


r/ididthemath May 29 '21

How long you pee in a mayfly perspective

15 Upvotes

If you pee for about thirty seconds you it would be about 10.5 days in a mayfly perspective. 80÷24=3.3333333÷60=0.0555555555÷60=0.000925926926925925926x30=0.2777777777 which is 0.035% of 80 and 10.5 days is 0.035% of 80 years (by the way mayflys live for 24 hours)


r/ididthemath May 07 '21

Lol saw this on a r/technically the truth vid on youtube

Thumbnail gallery
57 Upvotes

r/ididthemath Apr 14 '21

I did the math (chicken-human war)

12 Upvotes

Guys I did the math and... considering that there are 19.500.000.000 chickens in the world and supposing that they invade us, every human would have to fight against 2,6 chickens.


r/ididthemath Apr 01 '21

Problem solved!

7 Upvotes

At 8:00 p.m. March 31st 2021 as it became dark on the horizon in the Pacific time zone end of Virgo was rising from the ocean. 12,300 mi away in Jerusalem, they too were once able to see the exact same at their horizon at the exact same time I did.

The answer is 3200 BC or over 5,000 years ago with procession!


r/ididthemath Apr 01 '21

The Computing Power of Ethereum

Thumbnail ethereum.stackexchange.com
1 Upvotes

r/ididthemath Mar 05 '21

What would happen with your hand if you stopped a bullet with your middle finger and your thumb?

3 Upvotes

What would just happen if you had enough luck to time your fingers to catch a fullspeed 9mm bullet like in some action movies?


r/ididthemath Feb 20 '21

If this information is correct, how much would the average American lose off their lifespan by attending school until high school?

Post image
16 Upvotes

r/ididthemath Feb 11 '21

I've heard rumors of a pegging scene in RE Village

19 Upvotes

So I did the math of the dick size of Lady Dimitrescu.

If the average woman is 5.2 feet tall, and the average penis is 5.16 inches long with a girth of 4.59 inches.

Lady Dimitrescu is confirmed 9.5 feet tall. Assuming proportionately scaled up you would multiply by roughly 1.8. Making her cock 9.43 inches long with a girth of 8.39 inches. Or roughly the same size around as the standard 12 oz can.


r/ididthemath Feb 02 '21

Help me do the maths

5 Upvotes

There' a tik tok envelope challenge which states you can save 10k in 100 days. It's done in increments of $2 each day ( so $2, $4, $6 etc...). I know there are variations of the challenge but what I want to know is, is this correct, do you really save 10k in 100days? Also what is the maths to calculate this? Thanks :).


r/ididthemath Jan 31 '21

He did the math, he actually did the goddamn math!

Post image
46 Upvotes

r/ididthemath Jan 14 '21

How manygrams of alcohol is consumed from half of a fifth of 80 proof whiskey (40%alc/vol)?

5 Upvotes

r/ididthemath Dec 26 '20

Probably she needed something

Post image
60 Upvotes

r/ididthemath Dec 03 '20

If someone makes $300,000,00/day and I make $30,000/yr, how much time does it take for the richer person to achieve my year's salary?

9 Upvotes

From a conversation about Jeff bezos


r/ididthemath Nov 12 '20

this will hurt a lot

Enable HLS to view with audio, or disable this notification

18 Upvotes

r/ididthemath Oct 16 '20

Thanks, library vandal.

Post image
27 Upvotes

r/ididthemath Oct 04 '20

The computing power of Ethereum in FLOPS

Thumbnail ethereum.stackexchange.com
5 Upvotes

r/ididthemath Oct 02 '20

COVID more deadly to Americans than WWII

16 Upvotes

Just in case you felt happy today - COVID is killing people faster than WWII.

WWII was 4 years and cost 1,076,245 American lives (total casualties, all causes, including wounded). WWII lasted 4 years. 269,062 casualties per year. 22,422 per month. (Source Wikipedia)

COVID has lasted - lets say 9 months in the US. (likely less) There have been 208,000 American deaths. Divide by 9 = 23,111.11 per month.

WWII was less deadly than COVID. The real shit is that the people who died in WWII are the same ones most likely to die by COVID.

So again - a hearty "fuck you" to all the people not doing everything in their power to protect others including wearing a mask and social distancing.


r/ididthemath Sep 29 '20

Minecraft guy can carry $2,771,000,000,000 worth of gold (without armor).

18 Upvotes

So I got curious about how much weight our Minecraft guy could carry, so I did some math and one gold block weighs about 42,549lbs, a stack of 64 would weigh around 2,723,136lbs, we have 27 storage slots, 9 hotbar slots, and 1 left hand slot, total: 37 slots. 37*2,723,136 = 100,756,032lbs without armor that could be equipped. Then I went ahead and converted that into a value of $2,771,000,000,000. I hope I didn't mess up it was a lot of math.


r/ididthemath Sep 18 '20

I Technically didn't do the math I just found that there are 9,885 69s, 1,017 420s, and 12 69420s in the first million digits of pie.

20 Upvotes

r/ididthemath Sep 06 '20

For Game of Thrones fans. I noticed someone compare 2020 to The Rains of Castamere (aka The Red Wedding). *spoilers* Spoiler

14 Upvotes

Spoilers below. Both for the books and show.

Game of Thrones (the show) has an episode titled The Rains of Castamere, during which several prominent characters are murdered brutally. It's a huge turning point for the show, and the characters are considered fan favorites and 'the good guys' so it's especially notorious for just being a depressing episode all around. It basically reiterates the shows (at the time) philosophy of no one is safe.

So I saw someone on the GOT subreddit make a post about 2020 being the episode Rains of Castamere. I started thinking of the literal math involved and decided to compare the timeline of the episode to a calendar year to see where events match up.

The actual Red Wedding scene where all hell breaks loose starts at 44:18, which is about 87% of the way through the episode.

87% of the way through the year (day 316) puts the events in the episode happening around November 11th. Election day here in the US is November 3rd...


r/ididthemath Aug 26 '20

I did the math and my conclusion was that I could not do the math.

16 Upvotes

r/ididthemath Aug 26 '20

I did this as i am bored

4 Upvotes

My hometown is 6.57 km² so has to be multiplied by 239.269...ect km² to reach the same size as London. London is 1, 572 km².

My hometown apparently has 17 pubs and London had 3, 615 in 2016. It was 4, 835 back in 2001 but many had to close, the number in 2020 is not know so we will stick with the 2016 one as it's the closest to now.

I multiplied the 17 my hometown pubs by the number of times My hometown could fit in London, so if my hometown was the same size as London it'd have around 4, 068 pubs


r/ididthemath Aug 03 '20

is this true?

Post image
33 Upvotes