query stringlengths 8 249 | answer stringlengths 45 7.8k |
|---|---|
Why does water feel colder than air if they're the same temperature? | Water, being a more dense material, conducts heat better than air. So your skin, at it's ~34 degrees, is constantly heating the air or water around it to try to balance the temperatures out. That air/water next to your skin is constantly passing on the heat to the air/water around it, etc. Since heat/heat conduction is... |
The Puerto Rico / US relationship | Puerto Rico is part of America. It's United States territory. However, they haven't been admitted as a state. Most states start as territories before being granted statehood. They don't pay as many taxes and don't have electoral votes because they aren't a state. Texans are US citizens and Texan citizens, so it's not r... |
How is AC current transformed into DC when AC just jiggles electrons back and forth and DC pushes a continuous stream of electrons? Where do the DC electrons come from? | Conductor materials are like pizzas with salami on them placed in a circle. Salami are electrons. Let's imagine you have 10 pizzas. Now, 2 persons sit in front of each pizza : one takes salami from first pizza and put it on second pizza and the other puts it back on the first pizza afterwards , the next pair of persons... |
Assuming that the alleged collusion happened and the 2016 election was hacked , can someone explain how the Russians have benefited so far? | Separate Russians from Putin here. 1) Trump essentially ended US opposition to Russia's annexation of Crimea and support for Assad in Syria. 2) Trump openly advocated for Russia to rejoin the G7, after they were ejected for the Crimea invasion. 3) Trump undermined NATO, which discourages new countries from joining. The... |
why do aircraft carriers not tilt to one side in the water? They have big control towers on one side of the boat and nothing to counterbalance? | It's an interesting question, most ships tend to be symmetrical, so not an issue. A lot of the weight of the ship will be below decks, in the engines and presumably tanks of fuel and water. Whereas the tower is mostly empty space, where people work Presumably these are balancing each other.They do have things to counte... |
How can birds sit on power lines without getting electrocuted? | Because when they're sitting on the powerlines there is no connection to the ground so the current will go it's usual route basically ignoring the birds. If a human sat on a powerline like a bird, we'd be fine too, but if we had one foot touching the ground there'd be issues", 'Electricity flows through path of least r... |
How do animals naturally know how to basically live and survive, but humans have to be taught everything? | Animals are taught a lot of things when infants. Hunting, hiding, etc. Also, instinct. People haven't had to use the same skills everyday like animals have so they don't have the instincts as established. Also, humans are in their vulnerable infant stage a lot longer than most animals. |
Why don’t airlines let people seated in the back of the plane or in window seats board in Zone 1? | It's all about the priority status of the passenger. The earlier zones pay more to board beforehand. |
The riddle on the image I'm leaving in the comments. | Since Candy doesn't know the box, she must not have been told a unique ribbon color. But there are no unique ribbon colors, so this clue is a red herring. Since Candy knows that Holly doesn't know, then ribbon color must not be on a uniquely colored box. So it can't be grey/green or orange . So Candy must have been tol... |
How does taking Vitamin C help a cold/flu? | It doesn't unless you have a vitamin C deficiency. This is an urban legend that was propagated when Linus Pauling endorsed it as he was becoming senile. |
Can we change the language of the voice in our head? | My mom is bilingual and sometimes catches herself thinking or talking to herself in her 2nd language. It's usually when she's recently been around people speaking it or reading it, but it happens other times too. Her first and primary language is English, though, and she only rarely uses the second so she normally thin... |
Why does every Country have a similar variation of the word Police? | Ultimately it comes from Greek via Latin, but I'd be willing to bet that it entered most other European languages as a loanword from French during the Napoleonic era. That is approximately when it entered English . |
Should you use the A/C in your car during the winter? Why or why not? | In many cars you don't even have the choice. If you select the defog/defrost mode by selecting the vents that are aimed at the windshield, the climate control system will automatically turn the AC on as well, you won't have the choice to defog without AC. But if you're talking about heating the passenger cabin with the... |
What keeps movies unreleased? What stops any movie studio employee from just downloading a movie that hasn’t come out and leaking it to the internet? | I used to work in a TV studio. I worked on Arrested Development. I could have taken every episode a week before it aired and leaked it. I didn't because: 1) I effing loved my job. The people were super cool, the work was fun, There is no way in goddamn hell I would jeopardize it for a bunch of yahoos on the internet. N... |
How does the moons gravity pull the entire ocean up for high tide but it can't stop rain from falling? | It doesnt pull the ocean up. The moons gravity does not have enough force to raise water. What it can do however, is make it lean slightly. Which is what a tide is. The water does not actually rise, but a little bit more of it gets pulled towards one coast. Imagine a glass of water with a playing card under one side, o... |
Why is most of the world’s population right hand dominate? | Because there's something called dominant and recessive genes. Right handedness is the dominant gene, so it statistically appears more often. |
How exactly does more money translate to winning court cases more often? Is it purchasing smarter lawers or just manpower to go through documents? | If I know I'm going to lose, I settle out of court. This is much cheaper, so it leaves me with more money. Also, since I only go to court when I think I'm likely to win, I usually do in fact win. So I both have more money and win more often than someone who pays a lot of money for their lawyer to show up and make losin... |
How does the universe even exist? | After many years of pondering, scientists finally discovered the answer: [here it is.] It's a difficult question to answer because it isn't well defined. Do you mean why does it exist in the manner it appears to at the moment? We've got a lot of answers to that.We've got some theories about why there are galaxies, and ... |
Why has internet speed been increasing since its founding? Hasn't cable been the same speed since its founding? | Well the cable definitely has improved over time, 56k was limited because the equipment on the lines couldn't handle any more, DSL was faster but required that your line didn't have any of the old equipment , cable was faster but required updates because lots of the older equipment didn't allow for two way communicatio... |
How do noise cancelling headphones affect your hearing? Aren't you still hearing noises, just the opposite of whatever is around? | > You're still hearing things after all? Nope. The waves physically cancel out so the sounds don't get to your ear and thus no long term effect. & #x200B;", 'I recently bought myself a big Bluetooth over-the-ear active noise canceling head set. The actual experience: I hear a softly whispering hiss, like, as if the air... |
Why is it so hard to boycott something? | It's not hard to boycott something as a person, but it is hard to convince other people to be mad enough that they will also join the boycott.Alot of people dont care and just keep buying from the company even after being screwed several times |
How is Russia able to do all the naughty things they do without much international intervention? | What should the world do? Russia is huge, industrialised, and has a large standing armed force. They have thermonuclear ICBMs. They have nuclear subs. And Europe, particularly Germany, is dependent on Russian gas. Nobody is willing to kick that hornets' nest. |
How does traffic on the freeway happen if we are all going the same speed? | A lot of the times its because we aren't going the same speed. Some people like to change lanes multiple times to over take drivers going at the appropriate speed which is a contributing factor of traffic |
Boom and Bust Cycles - Why do they happen, and why can't they be regulated or controlled? | They can be, but unfortunately the regulators are often pressured to permit them. For example the early 2000's real estate bubble was partly caused by pressure to boost the economy after the dotcom bubble burst. |
Why are most people afraid of spiders/tiny bugs? | Because those little bastards will sneak up on you. Just yesterday morning I was stung by a wasp while sitting in my own bed, minding my own business. I don't know, a cat or a dog or a squirrel just seems more like a fair fight.It’s likely an instinct to avoid harm. Bugs are small and not easy to see or distinguish bet... |
What does it actually mean when people say “a whole host of” to refer to a lot of things? | It's just an older definition of the word. Tons of words have changed meaning. But since that phrase is from along time ago that's why it's used differently than we are used to. But host used to commonly mean alot of things. Also it used to be used to refer to an army. If you watch game of thrones I believe they use ho... |
How does electricity pass through a metal heating element without discharging into the water? | What creates the heat in a heating element is a thin metal wire coil made from a material like [nichrome], which is electrically isolated from the metal tube with some sort of non-conductive powder. So there isn't any electricity flowing through the metal on the outside. |
What is that morning taste and how do we get it? | It's bacteria. They have a long time to live in your mouth when you sleep unlike when you are talking and eat and drinking and cleaning your mouth throughout the day. This build up creates the stink. Through cleaning before bed can reduce the effect. Over a couple weeks of proper brushing, flossing, tongue scraping, an... |
What’s the difference between “sex work” and prostitution? | Sex work often is a wider range of services than just selling sex. It could involve web cam work for example, so the worker and client are never in the same room and don't actually have sex or stripping/pole dancing where there is no physical contact but is sexual. It's also generally considered a less derogatory term ... |
How does the Nintendo 3DS work? | Have you seen those rulers with bumpy surface, and they show you different pictures when you look at it from different angle? It's like those. The 3DS screen is a made up of a bunch things like really small Triangular prism, they will direct 1 picture to your left eye, and another to your right eye. The picture actuall... |
why do batteries have multiple lower voltage cells in series instead of just one big cell at the rated voltage of the battery? | There's [a funny quote answering this question] from a tech site that I like: > **You don't just call up the battery fairy and ask her to set your battery to a certain voltage**. Instead, a battery's terminal voltage is largely determined by the different compounds that you use as the anode and cathode, hence chemistry... |
(USA) Why do states vote on both Governor and Lt. Governor, but the President gets to decide their Vice President? | Technically, the President _doesn't_ get to decide their Vice President, they are both elected offices, and each office is voted on separately in the Electoral College. In practice, a President and Vice-President run as a ticket, with voters voting for both offices at once, which then determines how the Electors vote o... |
Why do neighboring states “look” and “feel” different from each other? | I've driven through northern Europe on a motorcycle. Internal borders in the EU are basically unmarked except maybe some lines on the road that haven't completely worn off and a sign. Every time I entered a different country both the landscape and the smell changed. The biggest and most immediate difference, though, is... |
How did America become the richest, most powerful country in the world when it was hundreds of years behind the modern world at its founding? | WWII happened. There are a lot, a lot of factors that contribute to our success post-WWII. For one, we have only have a couple significant neighbors, Mexico and Canada, and they're both allies. We then have large oceans between us and the rest of the world. This makes it very hard to bring the fight to us. Also appreci... |
Why do people usually assume antimatter exists? I've never heard an argument for its existence that didn't sound like some half assed Wario Land. | well it's because math predicts it, for example if you came up with a model to represent how many apples do you have 2 apples +2 apples = 4 apples, by math your model also predicts that 2 apples +2 apples - 2 apples = 4 apples -2 apples and as such you model jusr predicted that taking apples away exist. & #x200B; and m... |
What are positive and negative charges? | No one actually knows what causes charge to arise in charged particles. It is considered a fundamental property of the particled like gravity is considered a fundamental property of mass. As to why they attract and repel things without physical contact, get this when you make physical contact with something, for exampl... |
What is a catalytic converter? | The catalytic converter in your car converts harmful substances from your engine exhaust to less harmful ones. For instance, carbon monoxide, which is extremely toxic, will be converted to carbon dioxide, which is not great, but not super toxic either. You may have heard of a common way to commit suicide, where the per... |
When a rocket slows down, what happens with the kinetic energy? | Rockets are slowed down by the air that surrounds them. The air works just like the car brakes, and through the friction kinetic energy is converted into heat. That's why rockets need heat shields for re-entering the atmosphere, otherwise the building hear would jusz rip them apart. |
Why do you get tired of a film when you watch it a couple of times yet you can listen to the same song over and over again and still enjoy it? | I feel the same way - I can listen to a good song on repeat, but there are only a handful of movies I would want to watch more than once - but I'm not sure that's universal, though. I've known people who watch their favorite movies or TV shows over and over. |
On spray bottles with the square tip, do I really have to twist it back to off? | it can also help seal against leaks if the bottle's knocked over, or with certain products which require washing the nozzle after each use, or if an especially volatile fluid tends to evaporate through an open nozzle over time |
Why do plastic wrappers have black indicators in some areas? | When printing the wrappers often designers will leave markings so that when the product has been printed you can tell whether the colours are correct. You'll sometimes see little black squares then a series of red yellow and blue and sometimes even light cyan and magenta, it depends on how many colours are used to make... |
How is it that fish (I assume) can see clearly underwater but when we open our eyes everything's a blur, requiring us to wear goggles? | They're designed to adapt to their environment. Since they're created to live in the water, their eyes probably aren't as sensitive to that stuff. Whereas humans aren't meant to have their faces in the water, so our eyes aren't suited to being open underwater. |
Why didn't hydrogen fuel cell driven cars become more/as popular as their electric counterparts? | 1) It's difficult to produce in the same quantities as petrol. You have to either crack water into hydrogen and oxygen through electrolysis , or you get the H2 in a chemical process from fossil fuels . 2) It's difficult to store. You have to keep it very cold and pressurized - and because it's such a small molecule, yo... |
how do atoms bond, what are valence electrons, and can atoms bond when their valence shell is full? | Bonds between atoms are always on a spectrum: highly ionic or highly covalent . Ionic bonds involve an unshared unequal distribution of electrons while covalent bonds involve a shared more equal distribution since neither atom completely dominates the other in electronegativity . There's also a third major type known a... |
When in pain, why does hitting something help ease the suffering? Ex: Slamming your fist on a table after stubbing your toe. | I'm no intellectual, but I think the brain can be tricked into ignoring certain pains in favor of others. The closer to the brain the pain is the shorter the length it has to travel up the nerves to reach the brain. So if your body feels pain closer to the brain than the original source of pain, your brain gets distrac... |
Why are Aeroplane seatbelts only waste seatbelts and not like car seatbelts that cover the chest and waist? Wouldn’t it be technically “Safer”? | The idea is rather you're probably not going to survive a plane crash and the seatbelt holds your corpse in place to help identify your remains. Otherwise it's just enough to keep you in your seat during turbulence", 'Crash/brace position is head down towards your legs so shoulder belt would possibly impede this. |
Why do potato chip companies put so much air in bags of chips? | I think it's to act as a cushion. If all the air was out of the bag, even the smallest thing landing on a bag of chips would crush most of them to crumbs.The air is a cushion. When the bag is packed in a box which is tossed around a warehouse and then a truck and then another warehouse and then stuffed onto a shelf, th... |
Why is easy to fall asleep on the couch unintentually, but harder to fall asleep when you move to your bed? | When you are on the couch you are not trying to fall asleep - you are typically doing something such as watching TV and drift off to sleep naturally. This means it could take you 20 minutes to fall asleep, but as you are occupied watching the TV you don't notice the passage of time. If you are laying in bed, you have n... |
Why is it easier to fall asleep to background noise (radio, TV etc.) than just the plain dark? | All of the other comments are totally accurate, but I'm surprised no one's said this: When it's completely silent, many people's brains make an attempt to fill the void with thoughts. So, instead of sleeping, you're now having an existential crisis, or wondering what would've happened if you asked that one girl out, in... |
why we get such satisfaction from peeling off the plastic film from new products | It's a simple physical task that has a reward. No different than peeling an orange to get the juicy fruit, or opening a nut to get the edible inner part. |
Why men pee after ejaculation often ? | I read somewhere that ejaculation leads to muscles contraction in the genital area. Since the bladder is close to the genitals it is also impacted by this contraction which causes urine to be released. Why the system may have evolved that way might be because it also clears the pipes and prevents infection. Also this i... |
Why can’t a patient’s blood be reused in cases of internal bleeding? | Yes, cell-saver can be used. It isn't a direct exchange though. You lose clotting factors after washing the blood. It also damages some red blood cells in the process. You end up transfusing blood back in that isn't as efficient as when it came to the machine. Not a huge deal, but it starts to be a problem if you reall... |
Why are electric cars more eco-friendly if electricity is still fossil-fuel powered? | Not all electricity generation is powered by fossil fuels. You would be hard-pressed to find a grid which doesn't have *any* renewable energy contributing to it so there is that aspect. Another issue is that efficiency and pollution produced by automobiles and power plants are not equivalent. Power plants can focus on ... |
Is water never produced, only recycled? | For the most part, the amount is constant. That's assuming you consider ice and water vapor to be just different forms of water. As others have pointed out, water can be broken down into oxygen and hydrogen, which become atmospheric oxygen and hydrocarbons, and of course that oxygen and those hydrocarbons eventually be... |
Why do car batteries drain so easily if you leave a light on but can be recharged easily after a jump? | I'm not sure what you are asking. Any power consumption drains a battery and can eventually deplete even a large car battery. But just because a battery is depleted doesn't mean it cannot be recharged. Just in case you were confused a jump start doesn't really recharge the car battery. It provides sufficient electricit... |
How are old songs like "Here comes the sun" remastered? | Are you talking about the love album? It's just digitally edited to improve or change certain sounds, |
how do self checkout machines ensure that customers aren't stealing items or taking things by mistake when scanned incorrectly? | Some have a scale that registers when you put something in the bag without ringing it up but they are slow and glitchy. Most don't have any way of knowing except for the attendant. |
Why can grapes create plasma? | There isn't anything special about grapes except they are moist, capable of keeping their shape so as to provide a spark gap, and commonly available. It is the charge induced by the microwave that creates the plasma. |
Why do birds do that head movement when they walk? | Birds don't actually so much bob their heads as actually hold them stable. The body is moving up and down but the head stays perfectly level. They essentially have a cool little connection for the muscles in their necks to hold their heads stable ). This probably evolved to help them steer during flight but obviously h... |
Why do phone manufacturers let their customers set the date and time on their phones to before the phone's manufacturing date? | Testing. Every feature in a phone must be tested to ensure it works. And a feature which changes based on the date of manufacture is hard to test. The automated tests may be created on simulators long before the final hardware design is complete -- and you don't want to have to update the tests as your ship date slips,... |
How does live fish sometimes manage to freeze in place in lakes, seemingly in the middle of daily fishy business? | What's believed to have happened in that particular case is that the fish choked as the fish it was eating was too big to swallow, then both the dead fish floated to the surface and were frozen into the ice as the water froze over. |
Why is rainbow always curved in a semicircle shape? | Let's look at what happens if you shine a bright light into a tiny water droplet that's suspended in mid air. Water is a little reflective at its surface. You know how when you look at the top of a calm lake it reflects light so you can see reflections of the trees around it? That's an example. Well that reflection wor... |
Are police allowed to lie in order to obtain information in the US? | Yes. Police can legally lie to get information. They can say they have physical evidence, eyewitness accounts, and recordings. When they really don't. _URL_0_ |
Why do old people wake up so early? | When I get home from work, there's a ton of things I need to get done, usually having to do with my kids. Finally when everything done and all the kids are in bed, and I can do what I want, and usually stay up late, and need my alarm to wake me up to start it all over again. When I'm retired, it's likely I can do this ... |
What does the causation doesnt equal correlation argument, mean? | Causation = this is the cause of the problem Correlation = this happened at the same time as the problem but isn't what caused the problem My cereal got soggy because I left them in milk to long too long I hop skipped and jumped across the road and got hit by a car ", 'There is a correlation between increase in the cre... |
why does rotating power tools (i.e. hand drills) slow down so quickly when you release the trigger, instead of gradually coming to a complete stop? | When you hold the trigger it disengages a 'brake', which is engaged when you release the trigger. On most models this isn't a separate brake, but just how the electric motor works. Otherwise it would take ages to stop the drill bit . And you can't screw the second screw just after the first. |
Why do space travel vehicles usually get launched from static vertical positions? Would it be more energy efficient to take off like an airplane then accelerate while gaining altitude? | The problem is that you have two mode of propulsion here depending on your altitude. Planes need enough air density to create lift and keep them up in the air. At you go up you have less and less air density, this mean you have less and less lift. The record for the highest altitude was 37.6 kilometres. But orbit is a ... |
Why can a polynomial of degree n have no more than n zeros? | Because a polynomial of degree n, means it has the variable multiplied over n amount of times. A zero means the point where the polynomial would end up being equal to zero. A polynomial can have up to n amount of zeros because if any of these variables equal zero then the whole thing is zero. Suppose we have f = . If y... |
How does beer have varying taste if almost all of it contains the same base ingredients | Different Varieties of grains, different ways to prep the grains. Different varieties of hopes. You can also add different ingredients to it. There is an insane amount of ways to brew beer. I know someone has more information. Temperature and many other things. The way it's carbonated, CO2 vs nitrogen . There is sooooo... |
Why do low quality videos look worse in darker scenes and better in brighter scenes? | There's a lot more that goes into it, but it has mostly to do with colors and contrast. On Youtube, the video player is kept to the same size. In order to accommodate, lower quality videos have to display those pixels larger. This makes the video appear blockier versus higher quality videos, where there's more pixels a... |
Why is the core of the earth hot and why does it not cool down? | The Earth is hot because it formed from countless rocks falling into each other at interplanetary speeds, and that releases a lot of energy. It IS cooling down, it just takes a very long time. Think about hot coffee in a thermos. It can take all day to cool off. Now instead of a little cup of coffee, think of an 8000 m... |
How do shows like Better Call Saul shoot scenes in locations like truck inspection check points that appear to be operating full throttle? | By setting up a set that looks like an active inspection site. You can pretty much assume everyone is an actor, and all pieces are fake cardboard buildings. If buildings are real concrete buildings, then location is an inactive site that they dressed up and called in some actors in Border Patrol costumes. If the locati... |
If we get blood clots from sitting down/being immobile for too long, then why don’t we get them from lying down while sleeping? | Gravity. When you're lying down, blood has an easier time flowing back up from your legs than when you're seated. |
Why do some minor injuries hurt more the next day while others do not? A bruise will hurt more the next day but a scrape won't. | Wait what? I have bruises all over me and didn't know most were there until the Misso pointed them out I have the smallest cut on my foot and it's pretty uncomfortable |
When having trouble sleeping, is there any benefit to laying in bed with your eyes closed or you might as well get up? | Yes, resting in a darkened room is better than getting up and doing things, as you are resting and might still get some rest by dozing/napping. Personally though, I would say that if you're being kept up by anxiety it might be better to do something that calms you down for a bit before attempting sleep again.No. The be... |
How do we know that EnChroma glasses actually work if the only people they work for can't see color like the rest of us? | We know they don't work. Not in the sense that they give people with colour blindness more colour to see. It makes each colour more distinct, which creates a very rich experience for those who are normally lacking at least one of the three primary colour comes in their eyes. To resolve the issue, it would take a treatm... |
How is it possible, with almost all cars having keyless entry, we don't occasionally unlock someone else's car? | In very broad terms. Every keyless key is actually 'sending out' a number. When the car hears its unique number it opens.Each manufacturer has a unique number, each model has a unique number, each factory, then add a serial number. Combine to 1 code, then encrypt. So Ford, escort, 1200 turbo, made in Glasgow, serial nu... |
If you were given the sequence of numbers of n to the power of n, how would you find the nth term? | Not really sure this ELI5-able, but basically you're trying to solve n^n = x. Product log both sides and then exponentiate to get n = e^^) , where W is the lambert W function. tl;dr there's a somewhat complicated way to solve the equation |
How do Magnetic Dipole Moments experience a torque? Where are the forces coming from? | > But magnetic force is dependent on velocity, That's for the force caused by the interaction of electric charge and a magnetic field. The torque experienced by magnetic dipoles doesn't involve electric charge and so velocity doesn't matter. The force comes purely from the interaction of the dipole's magnetic field and... |
In America on tv they are uslng shoes indoors, is this true? And if its true how cant the floors be dirty all the time? | It depends on the part of the US. In large parts of the American Southeast, it's common not to wear shoes in doors. |
Why do retail businesses have "inventory reduction sales" at the end of the calendar year? | Yes Some states will actually charge an Inventory Tax on all merchandise a company owns but hasn't sold. This is pretty stupid, honestly, but it's true. _URL_0_ |
How is it that languages that developed closely geographically, can be so different? | Both good relationship and peace AND constant fighting would induce language exchange. The other comment mentioned the roots of the languages in your example, but I wanted to add this. If your people and their people don't talk, there won't be shared language development. The actual geographic closeness of some places ... |
How are earbuds and headphones able to make music / audio sound like its coming from inside your head? | Ears can locate a sound origin based on different sound levels and delays on each ear . When you have earbuds directly in your ears, there is no information about the sound's level and delay between them so the sound has no direction - therefore your brain plays it in your head |
How do we know what names mean? E.g. Hercules wife was called deinara, which means husband destroyer. In ancient greece was this woman literally called husband-destroyer? | I'm Turkish, all the names have meanings for us. Sometimes they are nouns, sometimes adjectives, but always meaningful. For example Cenk and Savaş mean war, they are both used as names and as nouns. Yavuz means grim, both used as a name and adjective. |
Why is it good to have iron in your food (milk) but bad to have iron in your water? | [Technically, Iron oxide has been found to be effective as an iron supplement since it does provide a bioavailable source of iron.] Looking through the chart in that study, you can see blood levels of iron still increase with Fe^3+ even though Fe^2+ is usually the soluble, bioavailable form. That said, iron in food is ... |
Why does chrome need so much RAM? | Not only are websites needlessly, wastefully complex, but browsers assume complexity - in other words, there are a lot of features and resources loaded and at the ready to handle a huge amount of browser capability so your pages load quickly. If these resources weren't there already, then your experience would come wit... |
How do we know there aren't more planets in the solar system with orbits that keep them on the opposite side of the sun from us at all times? | If there was some object opposite of us, obscured by the sun, we would see side effects of its gravity, because the other planets orbit at different speeds and are sometimes obscured by the sun. We've discovered several of our planets not by spotting them directly, but because celestial bodies we were aware of showed b... |
What is the difference between Bandwidth vs Latency? | As an extreme example, shipping a box of hard drives by Fedex has great bandwidth - if you send 10TB of data in 24 hours, that's over 900Mbps. But the latency is awful - it takes 24 hours for a given piece of data to make the journey. |
- How do hose attachments work? Why doesn’t the water pressure affect anything? | Pressure will only build up until the pressure in the hose is equal to the pressure of the water supply . After that, water stops flowing. Same reason as why your water pipes in your house don't explode when you aren't taking a shower. Residential water supply pressure isn't enough to overcome a threaded connector like... |
why do women’s periods synchronise? And why don’t all women have periods at the same time if they’re in sync? | They don't sync. It is a myth that has been debunked by scientific studies. I really don't understand how any women can believe it. Do they think they pee from the vaginas too?", 'That doesn’t actually happen. Women’s cycles mostly fluctuate based on the stress placed on their bodies from what I’ve seen. Source: I’m a ... |
why the new year starts in winter? | There is no reason, but convention. It wasn't always the case and could change quite a bit over the centuries |
Why can’t we hear anything when we are asleep but can wake up to an alarm or a loud enough noise? | I have a question on top of this: when I go to sleep, i usually play music with an alarm. How come I don't wake up to the music changing but I do to the alarm? Is it because my brain is accustomed to the music and knows the alarm means to wake up?", 'Oh, on the contrary, my dear Watson. Some of our blessed ears can hea... |
Why are the front and back cameras on smartphones not the same to begin with? Why do they need to differ in quality? | Every penny saved on a component, when you're shipping several million units, adds up quick!!! If the selfie camera just needs to be adequate enough to do a good enough job, it's hard to justify the few extra pennies on the component, especially since selfie cams are not that popular of a selling point. |
Why delivery drivers in USA leave packages outside your house? | Depending on the carrier they do for expensive items. But remember that that's not really what most consumers want. If I bought something from Amazon, I usually prefer the convenience of not having to be home when it's delivered over the safety.Usually when you order or send something for delivery and you can choose to... |
Why does traffic get so bad when it starts to rain? Normal reaction to rain is being conscious or at least slow down while driving, which would presumably lead to more disciplined traffic. | Well I think in some of the developing countries like India some of the infrastructure of their roads are't well planned or the quality with which they built their them is not always long lasting, this can cause the road to break down or erode away. Also the driveway drainage system is always clogging up when it rains ... |
Why is Diesel cheaper than Petrol? | I usually see it more expensive. However it burns more effeciently in big engines/also doesn't gunk them up as much, which over time is cheaper.Depends on where you are - taxes and supply & demand can be wildly different depending on where you go. |
What causes people to lose large chunks of memories after psychologically traumatic events? Is there any fix/cure? | It is important to realize that individuals will not lose preexisting memories that occured prior to a traumatic event. However, it is true that individuals who experience a traumatic event will not be able to remember the event itself very well. The main structure in your brain that is responsible for forming long-ter... |
How do we know the centre core of the earth is hot, filled with lava? Wouldn't it make more sense that things get colder the deeper towards the centre you go? | Because it's mostly metal, and it's spinning. We know it's spinning because it generates a magnetic field. If it was cold it wouldn't be able to spin. Also you have to bear in mind it's under insane unfathomable pressure. That pressure creates heat. And it's surrounded by a shit-ton of insulation(the earth surrounding ... |
How do cemeteries not run out of space? | In many places, when you get a cemetary plot, it's not actually *forever*. Eventually, they'll dig old ones up & just cremate the remains, allowing them to bury somebody else in that spot. I guess, in the long run, this still runs into a space issue because they still need to hold onto the remains but those take up *fa... |
What causes fainting? Does it do anything useful or is it useless? | Fainting is caused by too little blood flow to the brain. Your brain goes into unconsciousness to use the available oxygen for only vital functions. The fact that you go limp and fall is an added benefit because it's easier for more blood to flow to your brain when you're lying down vs standing.The actual mechanism is ... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.