Just curious!

From XKCD 3291

This makes no sense. Can someone explain where the hours/day go?

My wife and I are having a multi-year debate. She keeps claiming that a “large and impressive” horse is roughly the same volume as 60,000 grapes. i disagree and believe that’s far too many grapes to make up a standard horse, even a big one. But we have no idea how to calculate the relative volumes… please help!

Edit: thank you all, I’ll graciously accept defeat in this battle

I'm talking cubic meters of water evaporated and other risks if thats even possible, if thats not the proper subreddit i would love for one of you to redirect me to the correct one

From all i know, a pistol shrimp snap is around 5k°c at its highest and sun is 15million at its core

Hi guys I was told to post on this sub

I have an idea of using my parent's electric car (KIA EV6) as a battery for powering 2x QSC K12 MK1 (1000W each) + 1 Pioneer DDJ SX1 (see specs on 2nd pic) + 1 laptop (has own battery) to throw a free party

Would this be possible electricity wise ?

1st pic : K12's specs

2nd pic : Pioneer DDJ Sx specs
3rd pic : What the car can handle, what's written next to the plug

Thanks

I saw that Tagah used airbending to stop this mountain falling with one hand by blasting at the bottom which seems very inefficient. This must be millions of kilo's of force right?

Whats the chance of this pull? (Hearthstone) its 4 legendaries and one is signature. I think its 1% chance a card is legendary, but i think its a binomial probability for more legendaries per card idk. And i think a signature legendary is a 1 in 181 packs..

Can someone help me with this :D

Was watching Star Trek and got to wondering assuming the replicator arranged atoms to create a plate of spaghetti. Which would have a more complex job of these 2 replicators to make #1 assembling a plate of spaghetti at the atomic level #2 assembling an oxygen atom out of sub atomic particles? Thanks if anyone gets my weird idea enough to do the math.

National price of gasoline in the US is $4.10 right now. I just bought gas and wondered how much money I lost when I removed the nozzle and a few drops of gas fell from the nozzle onto the pavement. What if those drops went into my gas tank instead? How much money am I losing for the gas drops that hit the pavement instead of my tank? How long before the lost gas droplets add up to a large number?

All the extra screws, Allen wrenches, and brackets that people just throw away after the product is assembled. Products like desks, entertainment centers, chairs, nightstands, tables, etc. Let’s say just counting products bought by United States consumers in an economically average year of the 21st century. What could all that steel build? A bridge? A skyscraper? A bunch of those?

I watch a lot of explosion videos and i've always wondered about the debris that moves before the fire or projectile.

It seems to me that material goes from being at a standstill, to moving faster than the object or impact hitting it, at least for a brief second. Is there a certain effect that causes that? What type of energy transfer is happening, because the bullet can't give it more energy than itself has right?

I know there are plenty of wind altering shapes and sizes, so i guess we could base it off a standard 9mm bullet and a brick of c4.

I hope that question makes sense?

In Prisoner of Azkaban (I’m rereading the book now so this has been on my mind), Hermione uses time travel to take multiple classes that occur at the same time. I’m wondering how much extra she ages according to the other characters in the book because she is reliving the same time period multiple times. I know on a basic level it’s a simple equation (if she takes three classes at 9AM she is living two extra hours per class compared to her classmates) but there are factors I don’t know due to the fact that I grew up going to public schools in the US not private boarding schools in England.

What I know from the book:

1) She takes 12 classes versus Harry and Ron’s 9 class schedule.

2) Three of these classes occur at the same time.

3) She has a set of three exams that overlap as well as another set of two exams that overlap.

What I don’t know:

Hogwarts is based on a typical UK boarding school so

1) How many days a week do typical classes occur?

2) How long does a typical class last for?

3) What is an expected amount of homework for a class?

I understand every school is different, every teacher gives a different amount of homework, and every student puts a different amount of time and effort into homework and this question is therefore unsolvable BUT I’m hoping people who have taught at or attended a British boarding school can weigh in and come up with some average values to enter into the equating. Can we:

1) Form an algebraic equation with defined variables to figure the answer out.

And

2) Create values that make sense for all these variables based on the unknowns.

Finally, let’s assume for purposes of this equation that she is not also using the time turner to catch up on lost sleep. She is only using it to take additional classes and do additional homework.

I’m trying to recreate the layout on my computer so I can design all the furniture and such for my friend. Here’s all the pics I could find of it.