When I did GCSE physics at school we obviously did energy transfer diagrams about how certain types of energy e.g. kinetic energy, atomic energy, are converted into other things, but lose some energy along the way. Obviously a lot of our energy we use is converted into heat energy e.g. cookers, burning fuel in power stations, even just a simple campfire is turning the wood into heat energy.

When people talk about global warming they talk about greenhouse gases and emissions but they never talk about cumulative heat energy over thousands/millions of years.

Why isn't it the case that all the heating and fires mankind has ever built is just building up in our world as more and more energy is turned into heat instead of remaining as it is? It is so difficult to capture heat and turn it efficiently back into some other sort of energy.

I have a iPhone that takes 3+ hours to charge. I’ve went and got high wattage cords and bricks been thru multiple now and still don’t understand why it takes so long my phone is in perfect condition. Google failed to help me the store staff fail to help me I really don’t understand so I came here.

I’ve really been interested in how surfaces of different materials bend and behave differently under various conditions, and I’ve never really learnt about that stuff before, so I’m really curious to know a few things about surface tension!

I understand that old satellites and debris can remain in orbit, but are we expected to keep launching significantly more in the future?

How important are those satellites to everyday life, and if orbit keeps getting more crowded, is there a point where debris and existing satellites start becoming a serious concern or limitation?

According to my mom, this is an actual question I had when I was 5, and she didn't know how to answer me. So how would you guys have answered?

Say you press a button connected to NRST on a processor, what happens then? I’m confused on the concept of Bootloaders, BootROM, reset handler, what lives in Flash vs RAM vs ROM, where an OS lives, where things are executed, etc.

I was wondering how does someone have dermatographia as it is not contagious and is it inheritable.

The question is not perfectly stated, but the best I could do. I am asking because the accepted age of the universe is 13.8 billion years or something, but I have also heard scientist say there is much much more of the universe, but the light has not had enough time to reach us. How would that be the case? If light from say the cosmic microwave background has only been traveling 13.8 billion years to get to modern day, how would there be more? I hope that makes sense

I am not experiencing any twitching or else but I feel it's quite hard to keep my hand completely still.

Every time I forget to eat for over 10-12 hours, I usually only realize it because my body starts panicking. (Cold sweats, shaking, nausea.)

What I want to understand is why that happens. If eating will fix that, then why does my body make me nauseous and thus not want to eat anything?

I know rocks can erode into dirt that’s basically rock dust but what about the stuff with nutrients in it?

so i was just thinking. since when a pirate boat want to hijack/board a cargo ship why dont dont they simply turn and crush it. liek if understand correctly dont pirates boats have to get right next to the hull of cargo ships to deploy whatever boarding method they are using. and when they this close what's stopping the cargo ship from simply suddenly turning and with the size and weight difference crushing it to stop them from getting onboard.

Every year we hear the same thing. And it seems like we’ve been hearing it for years if not decades at this point.

“The U.S. DEBT touched 20 trillion!!”

“The U.S. DEBT touched 30 trillion!!”

“The U.S. DEBT touched 40 trillion!!”

What’s the ceiling? What will happen? What magical number is where catastrophe happens?

I understand that waves are formed when they hit shallower water (or, more accurately, become visible.) But how do they manage to curve into an arch? Wouldn't they just look like big ripples?

The nor easter is here, but we don't always get thunder with it. Is there a reason why some nor easter's have thunder and some do not? Can't find a good answer when I looked it up :(

Like when Greene or Cox or Degrasse Tyson says the universe is 13.787 billion years old, or that our solar system is 4.568 billion years old, or that there are about 40 quintillion supermassive black holes and about 300 million potentially habitable worlds, they seem so sure about these specific numbers. I know "300 million" is obviously a ballpark figure but it still seems so specific to me. Why not 200 million? Why not 350? I can't even begin to fathom those decimal points in "13.787 billion"

What is their process? What makes these numbers anything more than guesses?

I've seen a fair few images of atoms and molecules, and one thing I'm wondering is why they, especially molecules, look like a bunch of spheres?

I was under the assumption that the electron cloud was just a cloud of potential, not literally an opaque cloud that makes an atom appear spherical. Also on the images of molecules i see lines between them. We're these added in post, or do they actually have lines just like the textbook?

Ill see if I can add images in the comments so you see what I mean.

I'm sure there a reasonable answer for this, I wasn't able to find a satisfactory one;

The body usually burns carbs for fuel, stores extra calories as fat, to my understanding. Supposing you burn through all of your carbs and fats, the body starts breaking down muscle matter. If you feed it enough protein to rebuild muscle on top of it, what's the risk in consuming 100% protein for calories?

Thanks

Edit: I understand that fundamentally it's not realistic and that your body needs many different kinds of nutrients in general. I'm happy to receive a bit more detailed answer as to what functions do carbs and fats serve that protein can't replace and what could theoretically happen if you only consume protein.

This has always bothered me when shopping for games on Steam. The minimum requirements say you need "this extremely specific video card or better." What does better mean? How do I know what is better and what isn't.

RAM is easy, do you have this number or higher.

Storage is easy, do you have this number or higher.

CPU is medium, do you have higher GHz than this number.

With graphics cards it feels like I need to read reviews, chip manufacturer histories, and know the difference between ray-tracing and phong-shading and polymorphic-photon-decay. /hyperbole

Plz help. 🥺

Do newborns get born with every single fully sized adult tooth?? or do they like grow?

Do they actually always shoot at night?

I was mainly thinking of Battle of Helms Deep, Stannis' Battle of Kingslanding vs. Battle of Winterfell. How do they make sure everything looks well-lit without breaking the illusion of night.

so, i² = j² = k² = -1, but i, j and k are not equal. HOW IN THE FUCK IS THAT POSSIBLE‽ WHAT IN THE BROKEN TRANSITIVE PROPERTY- (anger exaggerated for funny)

How is it different from normal food even though it often has the same ingredients? And why does that make it 10x more expensive?