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Why is it that after we crack our knuckles, we can't crack them again until a little later? | When you crack your knuckles, youre popping air bubbles in the synovial fluid between your joints. After you pop them, it takes a few minutes for air to join back up together and form bubbles again, at which point you can crack them again. And by the way, contrary to popular belief, cracking your knuckles doesn't harm ... |
What the hell is happening in Yemen? | Yemen has never been a democracy. It has been ruled by the same guy for over 30 years. That guy resigned from presidentship in 2012 after protests. The guy following him wasn't much better in terms of participation. In contrary to the other states on the Arabic peninsula, Yemen is very poor, so the goverment has proble... |
Why do people just watch when something is clearly being done wrong by an authority figure? For example, the recent incident where the doctor was knocked cold on the flight. | There is a common and frequently studied thing called the "bystander effect". Basically it states that if someone is doing something or someone is having something done to them, that the larger the crowd the harder it is for someone in that crowd to break the mold and do something to either intervene or assist. In situ... |
Why are female pornstars paid more than male pornstars? Isn't that illegal? | How many beautiful women do you know that are willing to let a complete stranger fuck them in the ass and spray semen on their faces? Now, while you're pondering that I ask you, how many guys do you know that would fuck a beautiful woman they've never met in the ass and spray semen on their face? I believe it all comes... |
Why do reporters constantly refer to Pres. Obama as Mr. Obama? | This is actually a tradition going back to George Washington. James Madison and the House of Representatives insisted that he use "mister president" because they were really wary of nobility and executive power. You know, since they had just fought a war to escape from exactly those problems. _URL_0_I don't exactly hav... |
What makes a peanut a common allergen? Of all foods why is it more common to have a peanut allergy? | It's not clear why peanut or tree nut allergies develop. Tree nuts, like walnuts, are another common allergy. At first they thought it was introducing these foods too early and more recently now they tell pregnant women to eat nuts to reduce the allergy. Peanuts also may not be the most common, but clearly has the most... |
How does video compression work? Why am I able to comfortably stream high quality video while still images take a few moments to load? | In short, most video compression works by storing each frame as a difference from the previous one. You load a picture once, and then just change the pixels that are different in each subsequent frame, thus eliminating a lot of redundant information. |
Why water makes your skin dry? | water that comes in contact with skin evaporates and takes with it many of the skin's natural oils. The more frequently that skin comes into contact with water the drier it gets, unless the oils are replaced. |
Why are vegetables "good for you"? | Basically they're an all natural way to get vital vitamins, minerals, antioxidants, & fiber in a low calorie, unprocessed way. With the proper consumption of vegetables and fruit an average adult can forego a daily multi vitamin. |
If the common age of consent in The United States is 16, why is being 18 required to watch adult films? | Federal regulations limit ages on adult films. States decide age of consent. There are several states in the US with consent age of 18. |
Are there planets in interstellar/intergalactic space? | Yes, and quite a few. It is not uncommon for planetary bodies to get a gravity assisted slingshot out of orbit of their star. There are even brown dwarfs and other dark stellar-mass bodies floating around interstellar space . edit: They are known as Rogue Planets, here's the wikipedia: _URL_0_", 'One of the hypothesis ... |
how does extradition from the UK to the US work? | In general for an extradition to succeed, it has to be for a crime that would also be a crime in the UK. It goes via a normal court proceedings and while they won't goes into the nitty gritty details of the case, the court has to be convinced there is a reasonable chance of a conviction. I guess something like a Grand ... |
Placebo effect and how does it work? Also, what is the limit of what the body can achieve by truly believing it to be possible. | The Placebo effect is essentially the belief that something will have a positive effect on you. For example when you drink a cup of coffee you immediately feel more awake thanks to the caffeine? Well nope, caffeine take approximately 45 minutes to kick in. The extent of which the Placebo effect works is pretty hard to ... |
Is Sound Affected by Gravity? | Sort of, but you're probably too dead to notice. Let's say a tree falls and you hear it. If we could change the amount of gravity between you and the tree would the tree sound different? Probably not. Gravity can change the density of whatever sound might be traveling through, but in gases like air the effects of incre... |
How do news sites get their new articles, which are just minutes old, to the top of search engine results? | They don't get them there, search engines are programmed to find news articles with frequent crawls, and put them there. |
The difference between YouTube's buffering and loading an image from anywhere else on internet - and why buffering is so much faster | This might not be the complete answer but a part of the answer. Try loading a video in Youtube, and then a video from a website which is not primarily a video-hosting site . You will notice that the IMDB video takes significantly longer to load for the same quality of video. Google has some amazing compression algorith... |
Why are the majority of the tallest buildings in the world located in the Middle East and Asia? | Tall buildings are created for two reasons. One is that there is no space to move out so you have to go up. The other is because people need to prove that they are better than other people. If you have lots of money and plenty of space as some people do in the Middle East then you build to outdo. If you have little spa... |
If an infinitely fast car was on a finite loop, (ignoring physics laws which throw it off the track) wouldn't it just ram into itself? If not, why? | It's a truly meaningless question. An infinitely fast thing is everywhere at once, defying any notion of "where it is" or of "hitting or not hitting" anything.Speed is distance over time. So to get back to the starting point with no time passing you would have to divide by zero, which is undefined in math. So the answe... |
What to internet speed tests really show you? | 90 Mbps means a little over 11 MB/s. Internet speed tests show the speed from your computer to the nearest testing server. It's tested by downloading and then uploading a standard file. That testing server is usually in a big industrial datacenter with really good connectivity, so there is no bottleneck on the server e... |
Why can I hold my pees in for much longer when I'm just lying in bed? | Gravity, mostly! Also, when you are lying in a supine position, your core muscles are not contracting as much as they would be to stabilize a standing position to keep you upright. Both of these things contribute to the "urgency" feeling you get when your bladder is full. |
Why did Google Fiber's replacement "Google Wireless Broadband" fail to expand/develop more? | Google probably realized that it wasn't going to be as profitable as they expected and decided to stop dealing with the hassle that is being an ISP with physical lines to maintain |
Why aren't there any normal 5.5% alc./vol beers that are also light in calories? | There is a direct correlation between alcohol content and calories. Calories are units of heat. Alcohol is literally flammable. Your body can absorb a pretty tremendous amount of energy by metabolizing alcohol. The high the alcohol content, the more calories, pretty much as a rule.There's more to it than just the calor... |
Why does every nightly news report on the major networks run the same stories every night? | Here's pretty much how they pick stories: 1. What can we get from the Associate Press 1. Did anyone mail us a VNR?1. Is anything important actually happening 2. Election? Talk About Candidates.3. Relevent Historical Events.4. Anything on the Police activity report today? Go stand in front of it and read the one line of... |
Why do humans need purified water when animals can drink whatever water they want? | It's a safety thing. You could go drink water out of a spring and probably be fine. Maybe. But you run the risk of the water containing harmful bacteria. It's the same reason we cook most foods but animals eat it raw. Now, if you had always drank from that pond, your body might have adapted to those bacteria and they w... |
Why are those last few drop's of pee such a relief? | As a male I cannot relate to this, might just be me though. I just never heard of this. Theoretical I assume it is because of the pressure. When you pee it forces a pressure on your urethra, and the walls expand. When the pressure stops, the expanding of urethra stops, and you feel a relief. I presume someone has a bet... |
How does clearing your throat work? | Your respiratory system is kind of a paradox. On the one hand, in order to work properly it needs to stay well lubricated. But on the other hand, you can't breathe snot! So your body needs a way to keep things lubed up down there in your chest, while also having a way to get excess mucus out of the way. Essentially how... |
Why do Formula One look like super technological advanced driving vehicles, while NASCARs just look like cars? | Nascar and stock car racing evolved out of redneck bootleggers with a carload of moonshine trying to outrun law enforcement back during prohibition. They did this using every day vehcles, perhaps with modified angines and suspension, but they were still "off the shelf" or "stock" cars. These days, they only LOOK like r... |
How the body knows when to start digesting food and when the food exits the stomach? | When you eat something, it goes in your stomach. In your stomach, the acids eat away at the food, but not all of your food. Then it gets thrown into your small intestine, the intestines have little things kinda like an antennae which touch the food and go, "We got food in here from the stomach, bring the chisels and th... |
Why would Chechen terrorists want to attack the US? | I'm Chechen. It's because those two were fucking idiots that's why. I hope the survivor is interrogated and put to death. They are traitors to the country that took them in, and traitors to every Chechen alive. I'm at work, but if you got questions ask them. As somebody who's fiercely pro-American and pro-Chechen . you... |
Why do we only sneeze while we are awake? | Do we only sneeze when awake? Now I've gotta try to get my family to sneeze in their sleep. For science! |
Why does my body crave exercise even though I hate it when I'm actually doing it? | I believe the body releases hormones that make your physical well being better after exercise and thus not having those endorphins for a while will cause withdrawal like symptoms. They improve your mood, circulation, sexual hormone intensity and also stimulate your metabolism and digestion so that your body is aware of... |
If Matter Cannot Be Created or Destroyed, How is the Universe Able To Keep Expanding? | It's the space that's expanding, not the matter in it. We aren't getting new matter, there's just more space for it to be in. Also, matter can be created from energy and "destroyed" back into energy. It's the amount of energy in the system that can't change, not the amount of mass. |
Who takes over essential jobs during a strike? | If you are referring to essential services such as police, firemen, emergency rescue etc, in many jurisdictions it is actually illegal for them to strike. For example in New York State the Public Employees Fair Employment Act has banned all public employees from striking since 1967, and in the UK the 1919 Police Act ba... |
Why do clothes shrink when you put them in the washer? | thats true clothes shrink in the dryer not the washer. they shrink because the moisture leaving the cloth forces the weave of the cloth to tighten together.for natural fibers such as cotton, linen they will shrink when washed then heat dried for the first few washes only then they should wash with little or no shrinkag... |
How is it we can make zero calorie sodas, yet we can't figure out how to make zero calorie beer? | Fermentation occurs as yeast breaks down the sugars in the grain. While we can synthesize things that taste sweet without any calories, we can't change the fundamental laws of chemistry that govern the brewing process, and those laws state that you need fermentation to make beer, you need sugar for fermentation to occu... |
Why isn't tax added on to the list price in the US? | This has been asked before: _URL_0_ But every time it gets asked again, I appreciate how many people here aren't from the US, which is good.Because it looks smaller. Plus, every state and even county has different tax rates, so in chain stores that could be challenging. |
How does pain medicine work? | "Analgesics," the technical term for pain relief medications, actually refers to several different *categories* of medication, each with a *very* different mechanism of action. TL;DR: we're not really sure how the most common over-the-counter pain medications work, but have a pretty decent idea how opioids work. One of... |
Why do women still go to Chris Brown concerts while knowing he abuses women? | Because they like the music, presumably. Plenty of people don't change their buying habits just because they don't like what the person they're buying from does. |
How come sometimes lightning seems to crawl across the sky and other times a giant bolt just appears instantaneously? | When it "crawls," you're probably seeing a bunch of near instantaneous small jumps rather than one big near instantaneous jump. Lightning happens when there are big charge imbalances, big enough to overcome the resistance of the stuff between. If a high charge evens out with a lower charge beside it, that area could th... |
Why does my stomach "growl" when I'm hungry? | Normally, your stomach muscles goes through a process called Peristalsis where it expands and contracts in order to move food around and keep digestion going. From what I understand, when you are hungry your stomach is moving a lot more to get every scrap of food and use it for digestion. This movement is the "growling... |
Why does it seem like more technological change happened between 1900 to 1950 than from 1950 to 2000? | Seriously? Since 1950, we've turned into a computerized society that understands how to manipulate our own genomes, we're building robots and actually getting somewhere with AI. There are literally robots wandering around on Mars right now. We are reprogramming viruses to defeat genetic diseases. The internet contains ... |
Can someone please explain witch craft to me in detail? | Witchcraft isn't a single thing, many cultures throughout the world preform different versions of 'witchcraft'. The term originates from Christianity and related to any religious practice that wasn't Christianity. When Christianity became a dominant religion some cultures retained certain ceremonial practices from thei... |
How does one go about learning a language when they don't have anyone to speak it with? | There is no way to become fluent in a language without speaking with people who are native to the tongue. That being said I would recommend a free website called Duolingo. You could also try watch videos online in French or reading articles. I am no way an expert but these are some great places to start. |
Why is it hard to make a fist when you first wake up? | When you go to sleep, in a simplified sense, your brain deactivates your muscles. When you just wake up, your muscles are also beginning to "wake up" so it would be hard for you to have total control of them right off the bat.When you sleep the brain activates a paralysis circuit so you don't sleep walk and hurt yourse... |
Why is women’s handwriting generally better than men’s? | This has been asked many times before . While there are some physical explanations, like development of motor skills happening earlier for girls There are also social reasons, like girls being encouraged more to care about looks and boys to be fast and rough. Whichever is more important we can argue about but I doubt w... |
Why is one side of aluminium foil less shiny than the other? | When the aluminum foil gets really thin, it could be torn by the tension required to further thin it. To prevent this they run it though the rolling machine in two layers. There the aluminum is on the polished steel rollers, it is shiny. The side that's against the other sheet of aluminum is not as shiny. Here is a [Vi... |
Magnetos in a Cessena 172 | Aircraft use magnetos, which are driven off the engine instead of a battery, making them more reliable at the cost of some performance. Remember, a car with a busted ignition will fail and coast to the side of the road, a plane with a failed ignition will turn into a glider and crash. Think of magnetos as a crank gener... |
why do downloads start completely over when interrupted? | It's far easier to implement. Essentially, your web browser communicates to websites using a whole set of protocols. One of them is HTTP. HTTP has a command called GET. You can use this to retrieve files. Due to the nature of this protocol there is no way to GET **part** of a file. So if you have to download the whole ... |
Why didn't the big bankers go to jail after the Wallstreet collapse? | Because the government hasn't believed it can prove violations of criminal laws. Simply issuing an investment that drops in value isn't a crime and proving fraud is hard. It's like the difference between inattentive driving resulting in a collision, and intentionally driving one's car into a pedestrian. It can be hard ... |
This is a little late, but explain how wind chill works. | It doesn't get colder with more wind. However, it *feels* colder. Your body loses heat to the air around it. The wind carries away this warmed air, and replaced it with more cold air so that you can lose more heat. |
Why do old people's voices change? | True ELI5-Their vocal cords get stretched out. There is a surgery that can fix this. I seem to recall seeing an older person who had it done, and it was jarring to hear them with a young voice.The pitch of your voice is controlled by muscles that pull your vocal cords tighter when they're flexed. As we age, things tend... |
What's different about the air inside a bag of chips from the air outside of the bag, that it doesn't make the chips go stale? | The bag is filled with nitrogen. Because the chips sit in this altered atmosphere, no moisture, no oxygen, and no micro organisms, the chips stay fresh, crisp, and in top quality longer. Here's more about modified atmosphere packaging _URL_0_", 'Moisture content. As the chips begin to dry out, the moisture causes the a... |
Why aren't you supposed to wake somebody who is sleepwalking? | because of the old wives tale that the trauma would kill them. in fact, you can wake up a sleepwalker at any time to no detriment. it would be just like waking them up from bed.That's not true at all. A friend of a friend of mine sleptwalked off his balcony and splattered all over the street last year. It's actually a ... |
How does air horn generate such a loud noise? | U/Blesshope is talking out of his ass ,he doesn’t know what he’s talking about. Sorry brother.The airhorn uses a diaphragm similar to reed in a wind instrument. The cone is there to amplify the sound/ direct it, but the sound is actually created by vibrations on the diaphragm. _URL_0_ |
Why is it that most animals can crawl or walk immediately after birth, but it takes human babies months to be able to? | Humans have not had a regularly occurring need to run away from predators since we gained enough intelligence to make fire and spears. Because of this, the inability to immediately walk was not evolutionarily selected against, and so traits that improved intelligence and the ability to run extreme distances were allowe... |
How did our ancient ancestors in Africa deal with sunburn? | By being black, black people don't burn as easily and since the sun is so bright they don't need the skin to absorb as much sunlight to produce vitamins. |
How does anything exist tangibly outside of the 3rd dimension? | Dimensionality is a mathematical concept. It's used to describe properties of spaces. If we lived in a 2D world, we would only be able to perceive lines. Any intersection of our universe with a 3D universe would appear to use as a line. We live in a 3D world, so everything we perceive is in 3D. However, we can **descri... |
What would happen to North Korea (and subsequently the world) if Kim Jong Un suddenly vanished? | It would be kept silent for weeks at first while they tried to locate him. North Korean news might fabricate some stories about what he's up to here and there, but mostly they won't talk about him. Something similar happened last year when he took some time off for his health. The entire country would be completely loc... |
Why do dogs stare at us? | since none of the comments here are actual answers, i'll try to do my best to explain it. first off, dogs are a result of hundreds of years of artificial selection of wolves by humans. they are bred to do work for humans. naturally, the dogs that took direction from humans better than other dogs would have a higher cha... |
I'm a Senior in High School in New York. We are required for our government class to do 10 political hours, what are they and how do I get involved? | I would ask your teachers or advisers what "political hours" are. I 've never heard of them. |
What is the point of 120Hz monitors when we can only perceive 60fps clearly? | Actually, our eyes can quite comfortably perceive differences of up to around 80fps. It's not a *huge* difference above 60fps, but it can be noticeable in frame-by-frame rendered scenarios, such as games. [This diagram] might help you see the peak point. The added benefit of 120hz monitors is that they're capable of ge... |
How do chameleons camouflage themselves? | They do not. They change colors in response to temperature in mood, not as camouflage. But as to how they do *that*: they have cells called chromatophores in their skin. These cells are layered on top of each other and can expand and contract. When a cell on top expands, it blocks the one underneath. When it contracts,... |
"The captain always goes down with the ship". Why is this a thing? | Captains wont intentionally kill themselves no, but they are supposed to be the last ones off since they are responsibly for all crew and passengers. > "The captain goes down with the ship" is an idiom and maritime tradition that a sea captain holds ultimate responsibility for both his ship and everyone embarked on it,... |
How does a deaf person know what you are saying when they gain hearing? | I was born deaf, and I had a cochlear implant surgery when I was seven. Prior to the surgery, I was wearing hearing aids, I was not able to hear well with it, and the cochlear implant helped me to hear, but I can tell you this, it took a lot of practice to understand what people are saying without reading their lips. I... |
What is ethernet and how does it differ from regular internet? | Ethernet is just the particular type of port and network protocol which is used in wired ports to your computer. You probably know what it looks like: a larger, wider telephone connector. This is generally only used in local networks, and once it leaves the building changes to cable or fiber of some sort. The Internet ... |
Why are scars clearly a different pigment color than the rest of our skin? | Your normal skin was made slowly and precisely like a professional carpenter. Scar tissues was made in a hurry to plug a leak like an amateur DIY emergency bodger. |
Why Japanese always do the "V for victory" symbol when totally not applicable(or just in every picture ever). | Its a cultural thing. Like how we say "say cheese" when we take a picture.It's a peace sign. Or if you prefer BECAUSE THEY WON.we used it as kids to mean a casual peace greeting, or saying *deal with it*. DISCLAIMER: Not JapaneseA friend told me recently that it means "cute". That's it. They were in Japan on business a... |
How is it that the US economy flourished and expanded so extraordinarily during the late 1940s and 1950s when the government was so burdened with war debt? | The USA was more or less the only fully intact industrial economy. We supplied everything. To everyoneIf your country isn’t the one being invaded and bombed war can be quite profitable. The United States was producing an almost unbelievable amount of ammunition, aircraft, tanks, jeeps, rifles, ships, etc. The need to p... |
How does the pedometer know that I am walking and not just shaking my phone? | If you looked at a graph of what the phone was recording as it moves you would quickly see patterns that were unique to walking. The phone records how it's moving in 3 different directions. It also records the magnetic force in 3 directions like a 3 dimensional compass. A graph of this would look like 6 lines all wavin... |
the contact rules in ice hockey | You cant hit a guy if he is not actively involved in a play . You can not use your stick to impede a players progress . You cannot elbow someone . You cant intentionally push someone head first into the wall in an unnecessary manner . You cant smack someone with your stick to make them fall down . You rrally cant do an... |
Why is 13 an unlucky number in Western culture? | The Last Supper, the last meal Jesus Christ shared with his 12 apostles, had 13 men total attending it, the 13th of which betrayed Jesus. So 13 was then felt to be an unlucky number by Christians because of itThere's some great mythology here. Here's some more . A year has 12 "true" full moons. And sometimes it will ha... |
how does services like Instagram make profit? | There are three main revenue models online. Advertising, freemium and venture capital. Advertising = letting companies get access to your users for a fee Freemium - pay extra for more features like a mobile app, or other upgrades and purchases Venture capital - screw the business model, let's get big and hopefully sell... |
What MUST be done to fix the water supply problems part of the world are having | Folks simply have to live elsewhere. By most theoretical guesses, we're in the final 25% of Earth's optimal capacity as far as human population. [1] At a point, society will no longer care about who has an iPhone or what happens to Don Draper on Mad Men tonight. Food resources will be spread thin and masses will be for... |
What is the point of those "Fowarding you to your download in 5.." pages | They basically either make you look at ads, or are there to convince you into paying for a premium service. There's a *slight* chance that they're actually load-balancing and just want you to have something to look at so you don't think it's frozen and hit reload constantly, too. |
how the heck does wireless charging work? | Pretty much the same way as wired charging works. When you plug something in, in the charger is a transformer. The transformer consists of 2 coils of wire. One it attached to the house electricity. 1 is attached to your phone. As current passes through the primary coil, it induces a current in the secondary coil. There... |
How long does it take for vitamin supplements do make a positive effect on your health after you take them? | Depends on the vitamin. If you have scurvy and start taking vitamin C, it can make you substantially better in as little as 8-16 hours. If you have a Vitamin D deficiency, and start taking vitamin D, it might not have a noticeable affect for more than a weekMany people taking vitamin supplements are wasting their time ... |
Why can't we mix firework colours like we can paint? | Because light doesn't mix the same as paint. To make purple you use metals that burn purple. Adding in magnesium can make it a lighter purple, or adding zinc oxide can make a forboding smokey purple. Think of it like this: when electricity is pulsed through hydrogen it looks white, but it's actually a few colors of lig... |
LI5: The Stock Market and trading. Can someone explain it to me how they work? | To be honest, I would recommend looking at an [investment fund.] Since you don't know anything about trading, I would suggest not starting to trade until you have some market knowledge under your belt. If you use an investment fund don't try just jump on the hottest fund, everyone has good and bad times, just chose a c... |
What is an intuitive explanation of the Feigenbaum constants? | I'm not sure what intuitive means to you. A visually appealing version is to look at the Mandelbrot set. You have the biggest part which is the main cardioid. To the left of it is a circle. If you keep going to the left and zooming in, you'll find infinitely many circle-like shapes attached to each other. The ratio of ... |
What are the dangers/benifits in protein shakes and supplements concerning muscle development. | Dangers of protein? Basically none. A lot of people say protein is bad for your kidneys, but that's only if you have a preexisting kidney condition and/or are consuming an obscene amount of it. Benefits, in addition to the fact that higher protein consumption helps rebuild muscle after working out, shakes in particular... |
How can newborn animals instinctively know how to walk moments after birth, but humans take months to be able to even stand? | First of all, not all newborn animals instinctively know how to walk. There are just as many that are born blind, deaf and completely helpless. You are looking at two things here. First of all, there is the question of need. Some animals *need* to be able to walk quickly after birth to avoid predators. Think of wild ho... |
Why are birds such loud creatures? How come ground animals (squirrels, rabbits, deer, etc.) are generally so quiet while communicating compared to their flying wildlife friends? | Birds have the ultimate method of avoiding predators - flight. They simply fly away from anything dangerous. This also means they move around a lot and so they scream and yell to find each other. Ground animals have a lot more shit to worry about. They aren't as loud so that they can hide from predators, since they can... |
Why is it common to see the flag of the Confederate States of America in states which were never members of the Confederacy? | Every state has Confederate apologists in it. It's the modern way to fly the Nazi flag without flying the Nazi flag. The Confederate flag, whatever it may have once represented, is now the flag of American White Supremacists, de facto Nazis, and other far right-wing extremists like the Bundy family, whose patron, Clive... |
(kind of NSFW) Why my testicles ache if I get sexually excited for long but do not ejaculate at the end? | Educated guess here. Lots of blood and lubricating fluid builds up in all the "tubes" of your genitals when you sexually excited, and the tubes expand a bit for better flow. The "plan" is all that fluid is expelled in an ejaculation, then all the blood flow goes back to the rest of your body and all your "tubes" constr... |
Why do gas stations charge an additional 10 cents per gallon for card transactions and why is it legal? | Because it isn't illegal. They are a business, and as a business they have the right to charge what they want for their goods/services. Your method of payment places a burden on them, why should they have to eat that cost? You could pay in cash and pay a different price.Just so you are aware, most credit card payment p... |
why does running just after eating cause cramps? | When you're digesting, a lot of your blood is directed to your stomach and intestines. Which means you have less available for your legs.I used to get awful stomach cramps often when we had to run laps in Gym class in elementary/middle school, and of course got no sympathy and was told to "walk it off". I don't remembe... |
If velocity affects time then how can we be sure the age of anything? | You don't know with great precision, but you can still make a good guess. We'll be able to use the "13.8 billion years" estimate for a while instead of having to change to "13.8 billion years and 5 days" next week. Here, our precision is only to the 100-million years. Fluctuations due to relativity are negligible there... |
Why do we sneeze when plucking our eyebrows? | The nerves for this area are very close to the nerves carrying sensory data from your nose. The signals overlap accidentally. |
How does the brain 'click' and come to a conclusion when it receives multiple pieces of information? Why does the brain 'click' for some people, but for others, not so much? | I 'd say it depends on what information one has previously learned and trusts in. If I tell you that "the moon causes the tides" it may click for someone how the moon's gravity can effect a large fluid body on the earth. But for someone who doesn't know how gravity works or who's never heard of the concept it may not c... |
How is the Galaxy s7 IP68 waterproof rated? Even when it has open ports like the USB and headphone jack | The ports aren't open to the rest of the internals. Liquid and gunk can still get in the ports, but that's as far as it goes. |
The latter part of the periodic table | > Why are the lanthanides down there? Because it's easier to print on a page than [this]. > Why are some masses in parentheses? Some large elements are really unstable and aren't observed in nature. Instead of putting a weighted average of the atomic masses of the isotopes we observe in the wild, we just list the atomi... |
why silence sounds like a high pitched ringing sound. | What you're hearing isn't silence - it's tinnitus which is generally caused by noise-induced hearing damage. _URL_0_ |
Why does dog poo come out in a swirl but human poo is usually a log? | Maybe it's because we shit in a bowl of water, and they shit directly on the ground.Greyhound owner here: It does not. Not ever.If you've ever shat in the woods, you'll see the two aren't much different. Shitting directly into a bowl of water preservers the shape of the poo. Shitting on the ground causes the 'log' to d... |
How does Sodium Pentathol (Truth serum) work? | _URL_0_ It lowers your inhibitions like when you drink. This makes it easier for you to accidentally confess to something. But, as with being drunk, it also makes you more suggestible or nonsensical. There's no guarantee that what the person says is the truth.According to Burn Notice, it makes you too loopy to hold tog... |
Why don't they just make toilet pipes wider so they don't block? | Wider pipes require more water to push more material through, otherwise the water spreads out and drops everything it was carrying like a river delta. Also, I challenge you to make a pipe big enough that it can't clog. |
How come there are different ways to defend yourself depending on the type of bear? | I think it’s mostly the same except for Pandas and Koalas. Koalas you just punt and Pandas you act like you want to reproduce with them. |
why do children have such simple, underdeveloped palates? | Exposure/experience. As you grow you try new things. And also your taste buds change as you get older because your dietary requirements change. |
Why is Greenland called Greenland if it's all icy, but Iceland called Iceland if it's all green? What happened historically? | I believe I've read that scandinavian explorers gave them those names to discourage people from going to iceland so that they could settle it easily, and encourage them to go to Greenland, which would be very difficult for them to live in.Greenland was discovered and named during the Medieval warm period when Greenland... |
Why does audio sound deeper when slowed down, and higher pitched when sped up. | When audio is slowed down, you're stretching out the sound, effectively making the wavelength longer with a lower frequency. Speeding it up is squishing it, making wavelength shorter with a higher frequency. |
What is Throbbing; Why do you feel it when you are injured? | When you're injured your nerves send more messages and are more sensitive so pain becomes more acute. Throbbing is feeling your blood pump through your veins. You can feel this because you nerves have become more sensitive due to the injury. |
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