/r/theydidthemath
And they said math has no real world applications
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/r/theydidthemath
Going on the meme "This is exactly why we have to nuke Lake Superior" I am wondering just how big a nuke would it need to be evaporate all the water in there?
When I looked at this, you need about 10^6 J to turn a kg of water into steam. You have about 10^16 liters of water in the lake. The Tsar Bomba was 10^17 J magnitude so you need a bomb releasing ten thousand times more energy than that. Is this roughly correct?
Note: This is not a law question, but a maths question:
Seller S makes a sales contract with buyer B.
Object (actual value US§100.000) for the price of US§50.000.
Before S can give it to B, the object gets destroyed, because both S and B were negligent - the fault is 30 % buyer and 70 % seller.
If you determine the financial compensation only from the price (e.g. seller pays 70 % of the 50k = 35k to the buyer) or from the object (e.g seller pays 70 % of the actual value 100k = 70k), the solution doesnt really take into account who made a good deal in the first place.
An extreme example:
Actual worth: 10.000
Agreed Price: 100.000
If the contract was fulfilled contractually, the sellers net worth would be +90k, the buyers net worth would be -90k. If the seller is 70 % at fault for the destruction and had to pay 70k to the buyer, the sellers net worth would be -80k (-10k because he lost the object, -70k compensation) which is a ridiculous -170k from what the situation would have been, if the object wasnt destroyed.
I somehow cannot determine a way to calculate a "fair share" if value and price for the object differ, and also the percentage of "fault" for seller and buyer vary, that accounts for who made a good deal in the first place. Any ideas?
As an adult with no mental issues, I always eat my Skittles by pouring them into a bowl and taking two same-color pieces at a time.
To my horror, this always leaves a few stray pieces that don't have a pair. However, yesterday, that didn't happen!
Each piece of the five different colors in the 95g pack ended up having partner and there were no lone strays.
What are the odds of this happening?
(edit: it must at least contain a tiny bit of at least one of a
ny of the 7 continents. Any amount counts.)
Example of cutting squares at an angle.
Hi, Im wondering about this math question I thought of in my head.
Lets say you place a bunch of squares after each other in a row, with the intent to cut them perfectly at a certain angle so that you can remake the squares with the opposite pieces of left and right side. So for the smallest example in the picture to the left, we cut two squares, first square left side is gonna be perfectly connected with second square right side, and second square left side match with first square right side both with the same measurements as they originally were.
We would then proceed to do this again but with more squares. In which my question/request comes in, what is the minimum angle for this to happen, and what is the maximum possible angle and how many squares would it be with the measurement I have given.
EDIT: Updating the question since maximum angle would presumably be close to 90 degree as infinitely close as possible. What would the amount of squares be right before it reaches infinitely close to 90 degree.
Also, added question, what would be the difference in angles for the different amount of squares. 2 squares, 4 squares, 8, 16, 32, 64........
First time posting here so I hope this is explained enough/clearly for you all :)
Edit: The observer and the object are on the same plane.
How many people did the CEO of united health kill while acting as CEO? If it helps one American dies every 12 minutes due to lack of health insurance.
https://www.mariowiki.com/Mario_%26_Luigi:_Paper_Jam_level_up_progressions Here is how leveling works in the game.
I grinded to level 7 as Mario & Luigi, before Paper Mario joins. when he joins, he automatically starts at Level 2. At what level will they be the same level
Asking for a friend.
Assume we are only using the human eye for accuracy, what are the odds that if I point and aim at the moon that I will actually land there and if I miss what are the odds I will land on something else?
Given the current angular size of the moon and the sun, and the moon’s slow recession from earth, how many years from now will we no longer see total solar eclipses from Earth?
Let’s say I’m driving home from work in a downtown metropolitan area of roughly 1 million people. Let’s say it’s a 20 minute commute with about 10 of those minutes in moderate traffic.
Let’s also assume that I listen to the number 1 largest podcast (the JRE) and he released a 3 hour episode earlier that day. How many people would I drive past that are listening to the same episode assuming uniform distribution of JRE listeners in the US metropolitan city in question?
Is there some sort of formula where you could extrapolate that to other podcasts based off this calculation if you could just get some of their listener stats?
Can somebody calculate the speed of this car based on the video?
Hi guys, I want to see if anybody is able to find how fast the car coming from the right side was going? Somebody I know was hit in an accident and we’re pretty sure the car was speeding. Somebody posted the video on a local group and I wanted to see if anyone can get any rough number on the MPH?
In the video the car slammed on the breaks decelerating as well, so I’m not even sure if you can get the speed. Thanks for anyone that helps!!
Additional info that may or may not help:
I have an inflatable hot tub. Works great but the pump and heater are pretty small. Obviously, in cooler weather it has a harder time getting up to temp and maintaining. Pulling the intake filter off increases water flow quite a bit.
My question is- would the increased flow heat the tub faster, or would the slower flow heat the water more during its longer time in the pump?
I know there are a ton of variables affecting this, so let's make some assumptions. 300 gallons. The temp maxes out at 104F. When it hits 104 the heater turns off until it gets down to 102, then kicks back on. So I assume the heater is working at a fixed temp, just on or off. Photo of model attached.
Different filters would affect flow, so let's assume a 50% decrease.
I could run some tests here but hard to control external temp. Just wondering what the science says. Any input appreciated... including any efficient way to make it hotter!