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Why do people sometimes have to pay the government on their tax return, even though they already take their taxes from the persons pay checks? | There are two different things going on. First, throughout the year, the government is trying to predict how much you will end up owing in taxes . Ideally, it'll withhold about that amount from your paycheck. But then, after the close of the year, you file your return and calculate how much you *actually* owe. This is ... |
How Did Dalmations Become Associated With FireFighters? | Dalmatians are one of the few breeds of dog, perhaps the only breed of dog, that is not afraid of horses. Firehouse dogs needed to work in close association with horses back before there were motorized vehicles.Because horses. So, back in the day, fire engines were pulled by teams of horses. Now, Dalmatians and horses ... |
why is it that you can see the reflection of stickers that are stuck on mirrors? | There is a glass pane covering over the actual reflective surface. What you are seeing is the side of the sticker that is on the glass. However, because the glass is thick, there is distance between the sticker and the reflective surface, so you can see the back through the glass. Did that answer your question?', "Ther... |
What is the difference between table salt, kosher salt, and other types of salt? | Table salt typically contains iodine as an additive , whereas kosher salt will not. This is one of the reasons some recipes will call for kosher instead of regular table salt. Also, because of how the kosher salt grains are shaped, it tends to be slightly less dense than table salt. In other words, 1tsp of table salt w... |
Why can't we remember exact smells but can remember how they made us feel? | Our olfactory pathway is tied much more closely with our limbic system than all other senses. There are structures called the fornix, cingulate gyrus, amygdala, and septal area that our smell information runs through. These areas are associated with both emotions and memories. That's why they'll evoke an emotional resp... |
Why do mental care providers see video games as a bad skill most of the time. | Well, there are a few options. Keep in mind that they best relate to people who play a lot of videos, not casual players who might play a handful of hours a week. - People who spend a lot of time playing video games are choosing a sedentary activity over physical activity, which isn't very good for you. - People who sp... |
How can videos be made of our thoughts? | If you're referring to the research I'm thinking of, the scientists didn't actually extract video of people's spontaneous thoughts. In a highly controlled laboratory setting, the scientists were able to 'reconstruct video' of what people were watching based on real-time fMRI brain scans, but there were many limitations... |
Pattern Recognition and Neural Networking? | Neural networks comprise an input and an output, and a number of "nodes" between the input and output, that are interconnected. Each node has a weighting factor to weight its individual input and output. The network is not programmed, but TRAINED to perform a particular function. You give the network an input, and then... |
Why is glass opaque to UV and IR light, but transparent to visible light? | atoms can only absorb certain light frequencies, because electrons need to get enough energy to jump from one energy level to another, and these energy levels are not arbitrary. it happens so that atoms in glass and IR light frequency meet these requirements so glass absorbs IR lightWell, some ir is just at the end of ... |
Are they opioids or opiates? | As far as I'm aware,One is synthetic I believeand one is naturally occurring like from poppy's etc. But that may be the other way around. |
Why are journalists who were in contact with criminals, for example in the Netflix documentary "Dope", not forced by the police to extradite them to the police? | In many countries there are laws in place that protect freedom of the press, which includes the freedom to protect your source of information as long as you are not forced to reveal it by a court order. And judges are unwilling to issue such orders unless they deem it impossible for police to find other sources or it i... |
When do I properly use the word "literally?" | Most of the time when someone uses the term literally wrong, what they mean is figuratively, so the best way to answer this I think is to show the difference between them! Literally means that this *actually happened*, where figuratively means that its an exaggeration. *"I waited in line for Metallica tickets for so lo... |
How bugs survive falls from 3-4 feet with ease while humans die from height of a similar scale? | Because bugs have very little mass. You jumping from a skyscraper will reach a much higher speed than a bug falling a few meters. Higher speed of impact means more damage. Plus the bugs usually have a hard shell so it doesn't get damaged easily. Well unless it meets a human hand. |
Why can comedians make extremely racist jokes without being called racist in the media? | You can call them racist all you want. That's part of the joke.Michael Richards, or "Kramer", from Seinfeld got publicized for it a couple years ago I think. |
Rounding in the Fermi Problem: 4 rounds to 10? | **TL:DR; Rounding is finding the closest number. But closest number is not that well defined. In Fermi rounding the numbers are log-spaced. So Fermi rounding implicitly uses a logarithmically scaled distance to find the closest number.** **Normal rounding** In normal rounding you want to round to a whole number. Basica... |
How does built in Wi-Fi work in a car? | Your car has a built in mobile hot spot with a sim card in it. That's all, its really fairly simple and mundane. Just a mobile connection as if you put your phone on mobile hot spot or had one of them. |
Why did China choose to ally with the US? | China's break from the Soviet Union had several contributing factors. China and Russia have historically had tensions because of land disputes at their border so that was a contributing factor with some small scale conflicts happening in the 60's. Also after Stalin died the Soviet leadership began to criticize the cult... |
Why does someone else touching my junk feel better than me touching my own junk? | Anticipation. Your anticipation hightens the pleasure because you don't tense and prepare for it as much.You know what youre going to do to yourself. You have no idea what the other person is going to do. |
How come I can vigorously rub my eyes, which seem so fragile, while causing what seems to be absolutely no harm to them? | Not the perfect answer, but eyes are much more stable than people would might think. I used to be super afraid of losing my eyesight because I wasn't aware how strong and stable eyes are. It changed when In School we learned about the eye and we sliced up and did an autopsy on a cow eye. It wasn't fragile at all, it wa... |
Why is it so hard to find what happened to the girls in Panama? | Have you ever watched 'Bones'? Basically, they found remains and were able to determine identity from extracted DNA. It's likely that the poor state of the bodies will make finding any evidence of cause of death difficult without close examination of the cleaned skeleton for bits of material, fractures, nicks, etc. tha... |
Why do we have differences interms of intelligence? some are smart and some are dumb as sh*t. | It depends of many factors let's start , first we have to remember genes are transmitted from generation to generation so some characteristics of past generations I'll pass to future generations, also let's consider the next factors 1- Education at low age 2- Awakening of curiosity by the parents at low ages 3- Self es... |
Why are Hiroshima and Nagasaki inhabitable while Tchernobyl is not? Does radiation from nuclear bombs dissipate faster than a leaking reactor? | A bomb only has a few dozen kg of nuclear fuel. A reactor has hundreds of tons of it. A bomb releases all of its energy in an instant while a reactor is designed to fission for years at a time. So the reactor builds up drastically more radioactive waste products. Also a lot of the fallout from a bomb gets blown into th... |
Why do many Redditors "Support" Christopher Dorner? | There is a strong streak of anti-authority in Reddit, and specifically, anti-police. Basically anyone in power. They see Dorner as being justified because the LAPD is widely seen as corrupt. It has little to do with Dorner's actual claims, simply that he is someone with inside knowledge who stood up to the police. Redd... |
Realistically, what impact can a government have over a recession/depression? | There's two ways for the government to intervene economically, through fiscal or monetary policy. Up front keep in mind that economic downturns are always going to happen so it's not a matter of avoiding it but trying to keep the economy in balance. If you can devise a way to avoid economic downturns, then congratulati... |
The differences between First Degree, Second Degree, and Third Degree Murder | Murder 1 - This is when someone plans on murdering someone. For instance, they buy a gun, they find a place for the body, then carry out the plan. This is also typically the degree of murder given to those who kill during the commission of another crime . Murder 2 - Murder with no planning. Murder 3 - Killing someone d... |
What are freckles and why do we get them? | When the sun hits your skin, the outside layer of your skin thickens a little bit. Some cells understand that event as a sign to produce a dark pigment . This pigment helps to protect the skin from the sun. People with lighter skin have less melanin on their skin, so, when the pigment is produced they often get freckle... |
Why people turn all red when embarrassed? and is it possible to control? | Blushing is something of a special case. While many elements of the stress response make sense in terms of fighting or fleeing from a threat to life and limb, redness in the cheeks does not. Physiologically, sympathetic nervous system activation involves a few different receptors. The alpha-1 receptor tightens blood ve... |
How was the US government able to run a surplus in the 90's? | The Senate and house were both controlled by Democrats in 1993. During this time the [103rd United States Congress] passed the Omnibus Budget Reconciliation Act of 1993, sharply raising taxes on the top incomes. _URL_2_ We had a large tax increase on the highest incomes, the economy was good, and the "dot com" boom. Af... |
Why student loan debt isn't absolved by bankruptcy. | Because if it were allowed too many people would do it. The short version of what happens when a person declares bankruptcy is that a court works out a deal with everyone the person owes to divide up their assets and income. Once that deal is in place and executed, the debt is relieved. So, if you owe $1,000 and have $... |
Why are there so many weird/oddly specific old laws in the US? | To combat the weird, odd cases that occurred. Let's say some state has a "don't spin pigs on their backs in traffic in the rain on sundays" law . That's probably because someone was doing that, and the person said, "I can spin a pig on its back in the rain on Sundays if I want because there is no law against it" So the... |
Why is it that people spend so much money on gym memberships to go running on treadmills when they can run outside for free? | Many people live in areas with bad weather. Many people live in areas with too many hills. Many people live in areas with dangerous traffic. Many people enjoy running at a certain pace and the ability to manually adjust their incline. And yes, many people are already there for other workout equipment and use treadmills... |
How did carrier pigeons know where people wanted them to go? | They didn't. Every carrier pigeon has one place that is their "home". They can always find their way home, no matter where they are released. But that's all they can do, so they're only able to deliver messages one-way, to one place.Carrier pigeons always return to their *home*. So you'd raise a dozen pigeons, carry th... |
If we witnessed a meteor hit the moon, would it be instant like on earth or would it be slower? | I'm not sure what you mean about "real time" and "slowed down". We would see it over one second later because of the speed of light. The fastest known comet moves at 536 km/s, which is 0.1% of the speed of light. At these speeds you can observe color shifts if you study it with a spectroscope. The fastest moving thing ... |
What's the difference between "individual rights" and "government powers." | I assume that you're asking in the context of the United States because A) I'm from there and a chauvinist and B) I don't know as many specifics about other countries. So, in that context, I think that you're a little confused about how rights and powers were first framed in the constitution. The constitution was set u... |
In the Islam religion do women pray in Mosque's or only men? | Women usually pray in different part of the Mosque, most likely behind the men or in the different floor than men.Women have a seperate section in Mosques it's like second floor for them put it other words they've got the balcony of theatre. Thats in theory, in practical nobody attends but men. |
Why does some of my spam email (especially ones that leak into my inbox) think that my name is Michael? | Someone, somewhere filled out a form with the name michael and your email address. Spam - oddly enough - often lacks quality control so this will likely go on foreverOne hook spammers use to get you to check out their email is to address the email to you, specifically. If you get an email addressed to your first name, ... |
Is it true that radiologists/people who conduct x-rays will be sterile/infertile? | No. People who work with radiation are generally very safety conscious and are held to a *very* strict regulatory standard. Any suggestion that workers are getting an abnormally high dose of radiation is likely to result in an investigation and possibly large fines.Only if they ignore all the safety precautions. There'... |
Movie theater screens? How do they work? What's the difference in a normal theater and one of those imax hd theaters? | It's all projection. IMAX is still largely done using film projectors, even digital IMAX is lower resolution than the film counterpart. In addition, the larger screen with the much higher resolution is really what makes the experience so much better. |
Why are men attracted to breasts and butts? | They show that your potential mate is worth the pursuit - i.e. can actually birth your children and afterwards feed them.Yarr, ye forgot yer searchin' duties, for twas asked by those what came before ye!] |
How does cracking a cryptic message work? | The best way to learn how to decrypt something is to see it in action. > Iluvw ohw'v hqfubsw vrphwklqj zlwk d vlpsoh vxevwlwxwlrq: Every word has a vowel, and there's only five of them. Let's look to see what we have. D looks like a vowel, probably I or A. A is the more common. L and T are repeated 5 times. H is repeat... |
Why is the Armenian Genocide not as recognized as other major events (i.e. Holocaust, Five Year Plans, Pear Harbor)? | Well, I think it is by a lot of the world. However, there's still some argument about how much it was a forced deportation intended to kill as many Armenians as possible and a forced deportation by a crumbling empire which was in such bureaucratic chaos they simply totally failed to prepare in terms of food and shelter... |
How do documents like the Achtiname of Muhammad not diffuse into the violent populations of Muslim countries? | It's not about following the Quran in any real manner. The Quran has multiple verses that talk about Jesus, his role as a Prophet, and his eventual return as a part of Judgement Day. The Quran is explicit about both Judaism and Christianity as being part of an evolution in God's word that 'ends' with the Quran. If you ... |
What causes people to sleep in different positions. | Some people think that there's [a link] between sleep position and personality traits, but it's [not totally certain] because people tend to move around a lot in their sleep. It looks like no one really knows why we sleep how we do, and we mainly just sleep how we feel comfortable. [However], couples with a good relati... |
how does a new virus develop in nature? | Retroviruses, which includes HIV and the SIV viruses from which HIV developed, don't have any proofreading in their replication process. They make many, many mutations, most of which reduce the fitness of the virus but some of which will give it an advantage. Repeated enough times, you get a virus different enough to c... |
What is the purpose of a company that buys debt from other companies? Why do they buy it? What do they do with it? | If you're asking about what I think you're asking about .they buy the debt for much less than the debt is for. Then try to collect as much as they can. For example, imagine that you borrowed $100 from the bank, but then couldn't pay it back. They try to collect it from you, but you just don't pay. Rather than keep wast... |
How is it even possible to steal gasoline? | There are still some stations, mostly in rural areas, where you pay after pumping. There are a couple other ways, though. One common scam is for a person to act like a gas station attendant, pump someone's gas on a credit card, but not to put the nozzle back on. After the card owner leaves, an accomplice drives their c... |
why do we call certain people by their initials (e.g. AJ, TJ, BJ)? Why aren't there any FAs or GAs? Do other cultures call people by their initials? | In America at least the "J" a lot of the time stands for junior. Ex: Tom Smith Jr. might go by the name "TJ"', "Hyphenated first names were popular in Finland about 30 years ago, so you get a lot of people who are informally called by the initials of their hyphenated names. For example, a man named Veli-Pekka might be ... |
The "I'm a Mormon" ad campaign | Many people do think of them as weird. Many people think the religion is weird. When you are trying to convert people to your religion, looking normal and happy helpsTo be fair, I know several Mormons and none of them acted weird. My ex was though, but not in a bad way. |
What is the difference between an iMessage and a Text Message in iOS 5? | Apple has figured out that if two people are using iPhones , they can route the message through Apples servers and push it to the destination. This bypasses the carrier network saving the consumer money. If it knows one of the two parties is not using an iPhone, the message is routed through the carrier. All this is do... |
What exactly is going on with American ISPs at the moment? | American government lawyer here studied Aviation and Outer Space law in Canada. My Outer Space law professor put it best when discussing telecoms for capitalism to work you need both corporations and government regulators. When only one is working well the people are getting screwed. Conservatives in Congress have defu... |
Why is a shaft with a bore through it stronger torsionally than one without a bore? | Flex, the shell can flex and creates less torque on the center of the mass. Cross sectional area has been reduced so shearing stress has also been reduced. It's the maths, bro. |
Is it possible to throw a Tennis Ball to the Moon or Mars if i was outside the ISS? | Changing orbit requires a change in velocity, the faster you go the wider your swing out away from the Earth. The difference in speed required to change orbits is typically measured in delta-v, or change in velocity. I looked up some numbers. The ISS is orbiting at 7.67 kilometers per second. That's a crazy fast orbit.... |
How did the Neanderthals die off ? | They were gradually assimilated and outcompeted by Homo Sapiens. They had a lower brain capacity, and were less adaptable, and natural selection favored humans, who outcompeted them for food and living space. We do know that humans also interbred with them though, and it is estimated that up to 4% of our genome materia... |
How do movies obtain the rights to play music from artists or composers who have been dead 100+ years? | Written music that old is generally under public domain. However, the particular recording of it from the London Symphony Orchestra in 1975 is not, and would have to be licensed from them. Or you could record it yourself for free!Also, if disney owns it, they will just lobby congress to keep changing the public domain ... |
How do so many hundreds of people get killed in stampedes at Mecca? | Actually, if you asked a devout Muslim where/when he would want to die, he might say Mecca and he might want to die on the most spiritually fulfilling day of his life. Regardless, people weren't trampled because nobody cared or trampled anyone on purpose. People were trampled because there were MILLIONS of people in th... |
If a war veteran suffers from PTSD and kills a person/people, what happens? | They would go to trial where they would likely plead insanity/mentally incompetent and be placed under the ward of the state until they are deemed fit for the general population. That is provided the arresting officer didn't shoot them.This is likely related to the Chris Kyle case? There are a number of criteria before... |
What is potential energy curve? | Generally, a potential energy curve usually describes “the amount of energy some object or thing /can/ do if released from some sort of steady state”. In terms of mechanics , if you’re sitting on a mountain and I take the mountain out from under you, you’d start moving, which means your potential energy is getting conv... |
why is it when you have an itch and scratch it, it feels like it moves around? | Scratching localizes the histamine from around the itching part go the parts close to it. This causes the feeling of itch moving in your body. |
why are DJs like Calvin Harris and David Guetta getting billing over the singers in their songs? | Besides producing the music, they usually also write/co-write the songs ; so it usually is their song, they just asked a famous singer to sing it. Since these DJ's are popular, they negotiate it. It's a simple business move. |
why us car paint shiny and every other paint dull? Is there a reason for this other than someone thought it looked good 60 years ago? | Shiny is more protective and easier to clean. A dull finish on a microscopic scale is very rough with lots of surface area. That area is where dirt collects and allows the surface to be more easily damaged. A mass produced product that needs to survive many years in harsh conditions needs the best protection at the low... |
Why are chiropractors popular if they are not part of mainstream medicine? | Their treatments provide an immediate, but temporary fix to people's musculoskeletal problems. The key word being temporary, as in you have to keep going back indefinitely to maintain the level of pain relief you get from a session. This creates a very loyal customer base. You can re-align joints all you want, but imba... |
Is there a reason shops are so eager to start selling seasonal items so early? | From my experience it's to ensure they can actually sell through the inventory of seasonal items.Because it's the seasonal shopping that gets people out of their usual buying patterns. For example, if I go to the store I'm absolutely going to buy shave cream. The shave cream sale is all about getting me INTO the store.... |
why is declining population growth considered to be a bad thing? | Our economy is based on continuous expansion, which is difficult to do with a declining population. Fewer people working means fewer consumers for goods and services, fewer tax dollars collected, etc. |
Why can I see memories of places or people when my eyes are closed? | Your mind's eye activates pretty much the same area of the brain that your actual eyes do. So, when you imagine things like that, it can really be like literally seeing them. Neat! |
the difference between minister, pastor, reverend, priest etc | The way I understand it, a minister is basically anyone who does religious teaching, even unofficially. A reverend has to be officially ordained by some religion. A priest is specifically ordained by the Roman Catholic church. A pastor is like the head reverend of an individual church_URL_0_ Different titles for differ... |
What does the 8/7C timing mean for american TV shows? | I, assume, you aren't American? There are several time zones in this country. That means a show comes on at 8 EST and 7CST |
When you die from cancer what actually kills you? | One of two things Firstly the cancer can grow as a tumour in particular organ to the point that the infected organ can no longer function. E.g. you could have a tumour on your lung that grows to a large enough size that you essentially end up suffocating. The second and most common way is what is known as metastasis . ... |
What happens to the data deleted on our computers/phones/devices? | The data is on your hard drive and when you delete it, your computer allows the data to be overwritten.It isn't removed. The device only deletes the access information and now says the actual files are blank space, in reality they are still there. Until, you add new files that use that same space. With certain programs... |
Random bad radio signal spots. Why? | As radio waves propagate from their source, they end up taking many different paths and bouncing off different surfaces. Sometimes these waves will collide with each other in a way that leads to destructive interference, which will lead to this kind of fading dip.Imagine radiowaves as just light bouncing around, which ... |
How come swimming world records are broken several times a year but track and field broken records are few and far between? | Swimming is not natural for humans. It is something that has to be learned. A small change in technique can result in a fraction of a second increase in speed that is all that is needed to break a record. In contrast, humans have been running… well, since there's been humans. The technique has been optimized for a long... |
Why is O+ the most common blood type, even across different races? | The ABO blood types refer to antigens or markers on the blood cells. Type A has a certain shaped marker, type B has a different shape, O has neither and AB has both. Type O is likely our ancestral blood type, with the A and B antigens appearing as a mutation of the blood cell. Since O was 100% at a certain point, it ha... |
Why are there two geolocation formats? | It's just different ways of representing fractions of a degree, either as a decimal fraction or by dividing a degree into 60 minutes and a minute into 60 seconds. It's the same as saying that 4 feet 6 inches = 4.5 feet. 122° 25′ 0″ = 122 + + = 122.416667° Then rather than describing the position as being North or South... |
How does 2-step verification work on card readers that aren't internet connected | I'm assuming that you have a device that generates a number that changes every 60 seconds. The algorithm that generates the number is based on the current time, plus some extra encryption. Your bank has the encryption keys to be able to feed in the current time and get the same number. Plus, they usually allow the prev... |
What are all the 'Example' videos on Netflix for? | They're probably there as test data, for exercising the download servers to measure performance and availability. If I were Netflix, I 'd have monitoring processes running all the time, reporting on download speeds and server uptime. I wouldn't want to download actual content over and over, though, because that could s... |
Why the soviet hockey team was so dominant, even beyond other soviet sports like basketball and football. | Much of the countries who play hockey have much smaller populations than Russia. If you look at countries like Canada, Sweden, Czechoslovakia, etc they are usually 3-15x smaller in population than Russia. So right off the bat they have a much higher pool of players to choose from. Additionally, hockey is/was a premier ... |
Why are eye muscles puny and pathetic? | It's more likely the nerves that control them. If you're tired/stressed, they can't send a good signal to relax or contract properly. It could also be a million other things and this is a crazy oversimplification. Genetics also plays a role. Get out into some nature, it chills you out and your eyes get a chance to focu... |
Why is it that we don't enrich our local drinking water supplies with essential nutrients like Vitamin C, D, B12, and others like we already do with Fluoride? | Most vitamins and minerals we get from food Fluoride isn't found in food. Sometimes it's found naturally in water but not in many areas The American dental association is the main pusher for fluoride in drinking water. A tiny amount does a lot of good A tiny bit of vitamins and minerals is pretty much useless. You coul... |
How do college athletes keep up with course work during tournaments like March Madness? | 1) they have private tutors provided by the university 2) their practice hours during the rest of the year is strictly capped and the school can shift around their course schedule to accommodate the playoff season. 3) These athletes are generally not in work intensive majors like Engineering or Pre-Med. |
Is there a good reason for me to buy life insurance? | Between paying off debts, funeral costs, and your family being without your income, dying can cost a lot of money to those you leave behind. Life insurance is a way to lower the burden.Insurance isn't about making a bet with the insurance company, it's about spreading out the risk. The reality is that over a large popu... |
What is the cloud/smoke like substance in pictures of space | Those are nebula which are composed of enormous quantities of gas and dust. Unfortunately such pictures often include false color in order to show the different structures; astronomers often capture such images with the use of filters which help detect certain elements but this means that in the final composition the c... |
How does the ISS stay operational with all the Space Debris around? | The ISS is in a pretty low orbit where things are still affected by the atmosphere quite significantly. That’s why the ISS needs a speed push from time to time to stay up. But debris slows down and falls into the atmosphere. So that low orbit cleans itself pretty much. Debris is a much bigger problem in higher orbits.A... |
Why do my fingers wobble together uncontrollably when I move them through water quickly? | Friction by the currents you're making! You would think that it'd only slow you down, right? Well, not really. This is because you're actually trying to move you fingers in the water at the same speed you moved them in the air with the same effort. So you, kinda not knowing you're doing this, start forcing your way thr... |
The Voyager Gold Record Instructions | I'm doing this from memory, so it's probably not right. Let's start with the lower left area, with the single dot in the center with all the lines going out form it. The center is our solar system, and the lines radiating out represent the distance and relative location of large astronomical objects, pulsars I think. I... |
Why does the sum of all natural numbers equal negative one twelfth (-1/12)? | It doesn't. IIRC, that "proof" relies on claim that the infinite sum of: 1 - 1 + 1 - 1 + 1 is equal to 1/2, which it is not. You can disprove that bit by a quick little bit of math: > Suppose that the sum 1 - 1 + 1 - 1 + 1 - 1 . has a finite value and call it Z. Adding Z to itself you get the infinite sum > \tZ+Z = 1-1... |
Argument that oil bi products used to make and maintain wind turbines makes them just as environmentally problematic as oil. | It's called a "Life Cycle Analysis", which means understanding and calculating the amount of energy and costs associated with producing components, shipping them, maintaining them, and then eventually disposing or recycling them. It's a way to measure the true cost. It's a similar argument that says a Honda Civic has l... |
How does an airplane's altimeter calculate ASL altitude based on air pressure when there is so much variance in air pressure? | The air pressure altitude has to be given by the airport or weather station. Then you set this in your altimeter. 29.92 is standard pressure. They don't consistently change it according to all the differences Just each time they communicate over radio they will usually be given the pressure that is needed to be put int... |
How were the tetris pieces chosen? | As a fundamental mathematical property, [there are five basic "tetrominos that can be made by attaching four squares in some combination. Tetris uses the set of five. |
Why does the sound of a metal slinky toy cause cats to stick their tongues out? | One of my cats sticks her tongue out if you run your finger across the teeth of a comb, very similar sound. No idea why, my other cat doesn't react at all. |
How will life get better as I get older? | There is no "right answer" to this question, so I'll give you my personal response to it. There are quite a few reasons that people say life gets better as you get older, but if you ask me, these are cop-out answers. Answers such as "freedom" and "better jobs" and "a home of your own" are all fine and dandy, but when y... |
What is actually happening when a video game says it is loading? | Discs are too slow to keep up with the speed needed to read graphics/code/sounds etc. that are required during gameplay so you need to move all that information into the console/computer memory beforehand so it's already there when needed and can be accessed fast enough. As a note, some games can minimize load times by... |
How can babies breathe in water during pregnancy, but we can't breathe underwater once we are born and out of the womb? | Babies don't breathe at all during pregnancy. Instead, they get oxygen directly from the mother's blood via the placenta, and expel carbon dioxide the same way. In essence, they breathe using their mother's lungs. However, in the womb, babies will make breathing motions, pulling amniotic fluid into their lungs, which h... |
How do the Government/Police have records of everyone's fingerprints? | They don't have everyone's fingerprints. They collect fingerprints from everyone who gets arrested, applies for certain jobs or licenses, or even as a general drive. When I was young, the police offered to fingerprint all the kids in my school in case we were abducted, but of course if anyone got into some trouble thos... |
Do US broadcasters lose ad revenue when one of the teams is from Canada, and if so, is there a way to make up for this loss, or are they SOL? | Rights and ads are sold on a territory by territory basis. That is the network carrying it in the US is only carrying it and selling ads in the US, they don't care what happens elsewhere nor do they have any influence. However, they care if less people are watching in the US since one of the teams is not American. If i... |
Do people actually "freeze" in place when getting electrocuted and if so, why? Why are they unable to break the circuit by pulling the hand/foot away? | Electricity can cause your muscles to flex uncontrollably as it may short-circuit the signals usually send via your nervous system. So it is possible to cause someone to freeze up depending on how the electrons flow through the body.Your body controls muscle by sending impulses of electricity telling the muscle to cont... |
What is the difference between a police department, and a sheriffs department? | I believe police are tasked with law enforcement in incorporated areas and Sherrif's Deputies handle unincorporated areas. Police work for the city, Sherrif's deputies work for the county. Also, the Sherrif is generally elected. The Chief of Police is not. |
Why do some television shows have really long intros/credits? | Well, one reason is that it's a lot cheaper that way. Having two minutes to fill in your show's time-slot doesn't seem like a lot but it equates to several man-hours of work . Also, it was just sort of the accepted style at the time, so other shows tended to copy what worked. |
How does the 'red dot' attachment laser point attachment work on a rifle. | You're right. They are calibrated for a specific distance, and adjustable. Every gun sight needs to be ranged. Laser pointer sights are only useful at close and medium range. With a reasonable working range of 20 to 100 feet, you can calibrate your sight for 50 feet and only be off by an inch or so in either direction. |
how does a compreased file like .rar work | Imagine you have a text document with many lines written in English. 'Hi, Dr0n3d. I like supersonic travel. I think supersonic travel is, like, amazing. It is amazing because I think about airplanes often.' Everything on a computer is encoded in 1's and 0's, but the principles behind compression are the same. Lets pret... |
if possible, how matrices work. | First you have to know what a vector is: a list of numbers. Vectors can be used to describe locations. The first number tells you how far to the left or right . And the second number tells you have far forward or backward . Now, a picture can be described in terms of vectors. For every point/pixel, you have a vector fo... |
Why fat forms where it does | I'm sorry if the answer is incorrect but my lecturer told me that it has to do with gender. Male: The stomach. Female: Buttocks. |
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