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Why do radio stations names always start with either "W" or "K"? | FCC regulations, and on a wider spectrum, worldwide agreements about the assigning of identification to radio operators. The letters, called a 'call sign', are an identifier for that particular station/operator, linked to the person or entity responsible for the station's following FCC procedures regarding power, conte... |
why does ny first cigarrete at day make me feel sad and depressed about life? | Because you know that you need to quit, and that it is slowly killing you, but, even knowing all of this, you are not *really ready yet* to give it up. |
Why do orgasms feel good? | They feel good, because they are most likely supposed to be a reward for you. It should give you a motivation to have sex as often as possible, because it's obviously important for your sexual reproduction. Would you masturbate or have sex as often as now if there was no such good thing as an orgasm? Probably not. And ... |
when will gas prices start to rise due to depleted resources oppose to just political and economical reasons it rises? | To put it in perspective, oil is far more abundant than you perceive. The [Alberta Oil Sands] have approximately 175 billion barrels of oil that they know about in the area. They estimate that there is in total of about 2 trillion there though. To put that in perspective Saudi Arabia as about 260 billion barrels of oil... |
Can bacteria get sick or have allergies, or are they just alive/dead with nothing in between? | Yes, they can "get sick." There are many viruses which specifically infect bacteria which are collectively called bacteriophages. Also, a cell, just like our big collection of cells, can just generally run into problems or get damaged. It's not just they're alive or they're dead. Bacteria can't really have allergies th... |
Why do people place such value on paper currency? | There can be inflation because people **do not** set the value of paper currency. The economy and what a dollar can buy is what sets the value. For example, let's say you earn 4 dollars a day. And each day you use all 4 dollars to buy a gallon of milk. Next year, the price of milk is 5 dollars a gallon but you're still... |
How do alcoholic candies (such as gummy bears ) work? | All you 'd have to do is divide the number of gummy bears you use by the amount of alcohol you use and assuming it all gets absorbed, you'll know how much is in each one. A serving of say, 80 proof vodka is 1.5 ounces so if you used a cup of vodka and 50 gummy bears, and all the liquid was absorbed, you 'd have bears w... |
Why is it harder to not laugh in public than it is by yourself? | As humans, we are very empathetic. Our minds are built to imagine other people's actions and feelings as somewhat our own. This includes laughter. When you are alone and see something funny, you may smile or laugh for a second or two. However with other people, just seeing them laugh introduces their feelings of laught... |
The origin of using "left" and "right" to describe political affiliation, and why left and right were use rather than 2 other things that are opposite each other. | I might be completely wrong here, but I think it started after the french revolution. It just described the way the partys sat in the parliament. If I remember correctly one party was even called "les montagnes" because they were sitting all the way to the top. |
Why are so many California based celebrities involved in Scientology? | Southern California, especially the LA area is where Scientology is the most prevalent. People move out to LA to make it big, and they are out there without their family or friends or any kind of support system, which is the perfect environment for a cult to attract new members. Some of these people actually do make it... |
Why did bands in the 60s and 70s release albums at least once a year, but nowadays it's only about every 3 years? | My impression: Musicians earn a much greater share of their money touring now and are less dependent on record sales. Arena shows didn't really take off until the mid 70s and stadium tours became more of a thing in the 80s. Add to that the fact that a global tour with concerts every couple days is much easier to pull o... |
Why do hotels have open WiFi with a landing page to type the password, instead of a regular passworded WiFi network? | Many hotels have you log in with your room number and last name, so that only current guests can get access. For the ones with a single password, it's probably so they can make you agree to the terms of use. |
What does "seat" mean in politics/elections? | It means a political office, almost always as a member of a legislature, like Congress or Parliament. The position of *member of the US House of Representatives, from the eighth district of Pennsylvania* is a *seat* in Congress. It's common to hear people talking about political factions having a certain number of seat... |
Why/how is calculus necessary for rocket launches and returns? | The equations of motion needed to predict the location of the object you want to launch your rocket to are non-linear. This means that you can't find their solutions by algebra. This fact about planetary motion was known for centuries before calculus was invented to find solutions to the problems. |
Why do girls growth spurt before boys? Is there a practical reason to it? | Reproduction. Females develop sooner than males because one male can impregnate many females, but one female can only be impregnated by one male at a time. Males can also continue to impregnate women pretty much until the day they die, but females eventually hit menopause. As such, it is more important for females to b... |
Why is there a brief sharp pain in our eyes when going from artificial light to sunlight (indoor to outdoor) | Because it's brighter. It's the same reason when you turn on the lights in a dark room. Light enters your eye through your pupil . When it's dark, your pupil is bigger so it can let it more light and you can see things better. When you turn on the light, there's a brief period of time where more light enters your eye t... |
How can we use emergency calling on our phone to call 911 even when we don’t have a wireless connection or data? | You might not have service through your own provider, but the FCC makes it a legal requirement for all providers to handle all 911 calls. That means if have ATT and are outside ATT's range, but you're in range of a Verizon tower, then your call will get connected. Apparently you can also make a 911 call from a phone th... |
How does the night mode switch on rear view mirrors work? Not the self dimming ones, the older manual ones. | A mirror has two reflective surfaces, the front of the glass, and the back surface of the glass that is on some sort of metal backing. Light is always being reflected from both, however the back surface is much more reflective. If you angle the front surface differently from the back surface, then the two images will b... |
Why do dogs smell around before they pee/poop? | I think it's for the same reason they look at you while they do it. For a wild animal, their poop time is their most vulnerable moment, so they have to make sure they are really safe before doing it. For the looking part, they trust you, so they rely on your protection while they do it. Regarding peeing, it's also terr... |
Where does swelling go? | Your ankle is huge because fluid from the rest of your body has been brought into it as a consequence of your twisting it. That swelling leaves when the fluid is reabsorbed into the rest of your body after a few days, possibly shorter if you RICE it . |
Why do we get tired of hearing the same things over and over again? | It's really fun for your brain to predict beats/lyrics and once you have everything perfected i think it makes it boring to listen to |
What's so special about the AMD Ryzen | Someone will probably come along and give you a longer more detailed explanation but the TLDR version is: Bulldozer cores were designed for high frequencies and multithreading at the sacrifice of ipc. Bulldozer's IPC was actually considerably lower than AMD's previous architecture. It's a common misconception that AMD ... |
When water is flowing down my window, why does it suddenly change direction? | Path of least resistance. If there's dust or dirt on the window and the water can't break through its own tension, then it's likely to jump over and join adjacent water droplets instead of plowing through.Friction Water follows the path of least resistance. |
How theoretical math is used to determine things about the universe that we for the most part accept as factual and to are then used as a basis for more discoveries. | Why is it accepted as factual? Because it works unreasonably well. Without discussing how I might come up with such an equation, I could write down something like F=GMm/r^. If you know what those letters all mean, you could do any experiment that gives you those quantities and plug them in and the left side *always* eq... |
What good does a military jet escort do to a plane in danger? | It can't directly. What it is there for isn't the plane in danger, but rather for everyone else. If the planes on 9/11 had been destroyed rather than flying into the World Trace Center and the Pentagon, many lives would have been saved. |
Why are there so many kinds of bicycles? | Speed, terrain, level of comfort all causes different niches. Example: Single Speed and FixieDo you like driving automatic cars? Example: Multi-gear and mountain bikesDo you like driving on mountains and shifting gears? Do you like a high-end expensive, but extremely comfortable car?Cruiser it is Do not give a shit?Tar... |
Why does a referee whistle sound louder with a pea than without? | The pea causes pulses of whistle. Notice how the pea causes a wharbled tone rather than a constant tone? Each pulse gets a little time to build pressure before the tone is emmited.You're starting from a flawed premise. Not all whistles are created equal, and the pea is not what makes a loud whistle loud. My lifeguard w... |
could a foreign government really "buy" the US by setting up a corporation here and make huge political contributions? | Paying politicians to support your positions isn't a very good strategy. Most politicians are pretty "locked in" on the mos important and hot button topics. For instance, there's no amount of money you could contribute to Obama to get him to support repeal of the Affordable Care Act. The better strategy is contributing... |
Why do frozen carrots taste different? | Carrots sold frozen are actually more fresh than "fresh" carrots because they're frozen very soon after harvest rather than being transported around and sitting in warehouses for a while before reaching the shelf. You should find that a freshly picked carrot is similar in taste and texture to a frozen one from the same... |
Do insects or fish feel pain? | if you were ever a kid and burned an ant, did you not notice the ant run around everywhere twitching then stop? kinda reminds me of a human being on fire no?', "No idea, but I've seen some greviously injured sharks nonchalantly return to doing normal shark stuff, like there wasnt anything at all wrong |
Why didn't the Nazis invade Spain in WWII? | The Spanish government was vaguely sympathetic to the Germany, since Nazi aid had helped Gen. Francisco Franco win the Spanish Civil War in the late 1930s. The people of Spain, however, were split over whether to side with the Allies or the Axis. Volunteers from Spain, for example, fought on both sides of WWII. Franco ... |
Why did 3D printers suddenly become so cheap? | Because the patents that made 3D printing so expensive became public around 2014. _URL_0_Most of the initial patents ran out recently, which made the technology available to everyone. That is why it suddenly exploded like it did.Well, for a start the domestic kit is quite far removed from the industrial stuff in terms ... |
What's that feeling of death in your chest that comes from eating thick foods like peanut butter too quickly? | That terrible feeling you're describing is your esophageal wall being pushed further than it's supposed to flex. This is because the food you're eating and the dry state of your esophagus means the food can't slide against the esophageal wall well enough to conform to your esophagus' shape. Chew your food better, drink... |
Why do people seem more 'fickle' regarding voting left or centre-left governments? | In 1997 Labour won massively, more than what the conservatives have done this year. So it really depends on the year. Right now, Immigration and Debt are important topics to a lot of voters. The left is often divided as it is about challenging the structure of society so debates about which of Wealth Inequality, Sexism... |
How can the new iphones compete(run as smooth as) with other flagship devices like HTC one m8 and the S5 while having much lower hardware specs? | Apple maintains tighter control over the entire platform when compared to Android devices. For basic tasks, particularly apps that are part of the baselines OS, they can ensure everything is optimized well. And at some point everything is fast enough that the user experience is fine regardless of what benchmarks might ... |
What is the difference between reverends, priests, vicars, pastors etc. Why are some allowed to get married and some aren't? | Reverend is a "title" of respect for someone who is revered, particularly a revered religious leader. Among the fastidious, it is not supposed to be used as a noun, but only an adjective. I.E. "the Reverend John Smith", not simply "the reverend". But most people are not fastidious. Basically, if you feel like you need ... |
why were Germany and Japan allies in WW2? | Common enemies. Their relationship also was not very allied. Hitler was furious he was not informed of Japan's SE Asia attack plans prior to their December 1941 offensive.They had strategic enemies in common; in particular, they both viewed the Soviet Union as a major adversary. Had Japan performed better, it was entir... |
Why would any country ally themselves with North Korea? | Most of North Korea's "alliances" are hold overs from the Cold War. While relations between Communist nations was far from perfect , they needed to at least appear to be friendly for that whole "international workers of the world" thing. Also, North Korea's atrocities were not all that uncommon with other Communist nat... |
How does a company like Valve not have a customer service department? | Could be a couple of things at play here - 1) You only hear the complainers. You're never going to hear that thousands of people whose issue was resolved quickly, painlessly and above all easily by Valve staff. 2) The problem these people are having isn't Valve's to fix. Steam is just a platform they can't do anything ... |
Advertising with use of a competitor's name | A Mac is a real thing that exists. You don't need permission to call something by its name. It's honestly that simple. |
What do people mean when they say time doesn't exist? | Quite probably, they're repeating something they heard somewhere because it sounds cool. Kind of like how I always insist that [pink doesn't exist], even though there are plenty arguments for why it does. It just sounds cool to say, and confuses people who have no idea what they're on about I'm desperately trying to fi... |
Why does snapchat use up so much more data then other apps? | could be because it uses your location a lot for things like geocodes , temperature, and speed. The load of stories and the discover zone don't help either. Also, it runs in the background. try "restricting background data" to see if that helps. |
why do sinus problems sometimes cause headaches? | Sinuses are air filled pockets in your skull. When you get certain infections, the inflammation and mucus built up nearby will put pressure on the sinuses. That causes pain, in the usual way that increased pressure will on any part of your body. |
How does salt boost the flavors of food? | There's a chemical interaction on your tongue when it touches anything. It was designed in a salt-water environment and that chemical interaction performs better in the presence of salt. Evolution is slowly learning how to do the same trick outside of the ocean. Give it time. |
Why can my phone USB adapter plug in either way to the wall but the vacuum cord has to be plugged in a certain way? | This is a great question! The concept of having one prong bigger than the other has been around for a while, but if you go into an old house or building, you'll notice the outlets aren't like this. Both prong receptacles are the same. Most people assume they could be electrocuted by touching either the left prong or th... |
Why is "I said so" better than an explanation? | Sometimes its easier to not explain than to try 5 times and them still not get the pointSaying "Because I said so" is dismissive. That's the entire point. The speaker doesn't really care about the objections and concerns of the person asking the question at the moment and just wants the thing in question to be dealt wi... |
What is actually happening when you pull the pin out of a grenade? | [Here's] a great gif showing the inside of a grenade. Basically, the pin acts as a lock, preventing the lever from being flipped. Flipping the lever releases the striker which sets off a chemical time delay before the detonator is triggered, at which point it goes boom. Edit: and [here's] a pic with all the parts label... |
When i walk in front of a trash can that smells really bad, does it mean i have inhaled germs? | No, it means you've inhaled molecules of various chemicals that your brain interprets as foul smelling. Some of them may have been produced by bacteria, certainly. Now, you absolutely *have* also inhaled germs. Loads of them. But that's true for every breath you've ever taken in your life, and it's not what causes the ... |
Do Saturn's rings stabilize its axis as the moon has done Earth's? | I don't think so, although the rings are tens of thousands of kilometers wide they are incredibly thin , so their total mass is minute compared to the planet. They would have about the same gravitational effect as a small moon like [Mimas] |
Why do prescription pill bottles made up of a yellowish, maybe green, plastic? What purpose does it serve? | It keeps out a large percentage of light. Some medicines contain chemicals that can be damaged by too much exposure to light _URL_0_ Posted around the same time as you posted hahaLight protection. There are four major causes of degradation of drugs and other chemicals. Light, moisture, air, and heat. The yellow plastic... |
What is E-Ink and how is it any different from a tablet screen? | Computers usually have either CRT or LCD screen. CRT is a big box that has a layer of glowing stuff on the front, while LCD is a sheet of shutters and some sort of lightbulb at the back. The thing is, they both glow and when you look at glowing stuff too much, your eyes get tired. E-Ink is a bit like an etch-a-sketch. ... |
How is the sun able to burn for millions(?) of years? | The sun doesn't burn it fuses atoms to release energy. At high enough pressure, like in the center of a star, two Hydrogen nuclei get squeezed into one to make a Helium nuclei. When this happens a small amount of matter is lost and turns into an enormous amount of energy . There is enough hydrogen fuel in the sun to ke... |
how come a hot-tub at 104 degrees (Fahrenheit) can feel BURNING hot, but when I walk around in 104 degree Texas weather it feels..manageable? | It's a matter of energy. Water requires much more energy to reach 104 degrees than the air in the atmosphere. That also means that there is more energy to be conveyed to you body through convection. It's like comparing a shot of whiskey to a shot of everclear. Sure its the same volume, but there is more alcohol in the ... |
How does the human body know when to go into labor? | Labor & Delivery nurse here! Aspiring mid-wife :) Progesterone is the pro-pregnancy hormone. When it's time for labor, the body releases prostaglandins that will trigger the decrease in progesterone and increase in oxytocin. Oxytcin and prostaglandins work together to start thinning out the cervix. Once the cervix begi... |
how do CEOs of major companies such as google have an annual salary of $1 when federal law states you cant be paid less than minimum wage/hr. | Their total compensation is much much higher. When you tie compensation to things like company stock, it gives you the incentive to make sure the stock price goes up. |
Why do smells have the power to instantly force memory and nostalgia into my mind? | My friend studied cognitive science and is now studying psychiatry and this is how she explained it to me. Smell is a very old sense, older than taste, vision or hearing. So the part of brains that handle smells is closest to the most "ancient" and "primitive" parts of our brains, which have a large part in how we feel... |
Why Do Humans Hate Bugs? | Historically bugs have either carried diseases, eaten our food, given us horrific oozing bite wounds, or some combination of the three. Many bugs can make us quite ill, others are just pests that threaten our food supplies. In modern times there's probably less to fear from them, but thousands of years of aversion is a... |
How do simple electric motors work? | You have a rotor and a stator in an electric motor. One of them is a permanent magnet, the other an electric one. If you switch on the electric one, it makes north and south poles, which leads to the permanent magnet aligning itself. So the south pole of the electromagnet goes to the north pole of the permanent one. No... |
How are abstract expression arts expressive? And what separates artworks like starry night from its contemporaries? | So abstract means that the artist doesn’t have to stay within real world logic. Instead of showing a scene as it exists from a real perspective, they are free to change the shape or color or anything they want. Sometimes the change is small, but it can also be changed so much that it looks nothing like reality. Abstrac... |
Why does it seem that most tropical countries are poorer than most temperate countries? | Nice observation! One theory is that tropical environments are hindrances on building up robust societies, namely because of two reasons: 1) The tropics are harsh environments that contain a lot of various diseases, causing life expectancy to be very short. 2) Temperate climates provide for much greater agriculture. In... |
Why is denim blue? | If it wasn't dyed it would be an off white color from the raw cotton that is used. One of the threads used in the weave of denim is traditionally dyed indigo blue, while the other thread is left white, which results in the denim color. |
When stressed, why do some people gain appetite and some people lose it? | Personally when i'm stressed I have so much else to think about I kind of just Forget about eating. I 've had people put food in front of me and say "you 've literally only eaten a bagel in two days." Ohhh right eating is a thing I'm supposed to do. Anyway, that's one person's perspective, sorry I can't be more helpful... |
How exactly does Apple make its mobile processors? | ARM is a company that designs the chips. Then another company buys the instructions to make ARM chips and can modify the design . Then Apple pays another company to actually make the chips using the instructions that Apple has modified. It used to be Samsung, but for their most recent devices TSMC made the chips. So on... |
Why is it called "Taking a dump" when you're really leaving one? | one of the minor definitions of "take" is "to indulge in and enjoy". E.G. take a turn on the ride, take a bow take a dump. |
Why is killing cops legally worse than killing civilians if cops choose that job knowing the risks? | Two non-cynical reasons: 1.) **Deterrence** - By the nature of their jobs, cops are likely to end up in situations were their being killed is a possibility. The hope is that raising the penalty will cause at least some people to think twice before deciding to kill a cop. 2.) **Attacking Order** - In addition to all the... |
Why are accused cops and charged cops still PAID while on leave? | The police are better employers than yours, then. They have the right way of it, I think. Accused/charged is very different from convicted. Anyone can accuse you of something. Why should you lose your paycheck/job before anyone has proven anything against you?', "innocent until proven guilty. just because the officer h... |
With people always talking about computer viruses and malware, how safe is the internet in general and how safe are Macs compared to PCs? | Long story short, you get a virus by allowing it to spread to your computer. By that, I do not mean that clicking a button the wrong way is an authorization. I mean when you computer asks you explicitly 'this program is requiring authorization to perform actions that should only be allowed to trusted programs. Should i... |
How do companies like apple display their beta software to the world live and be sure it doesn't crash? | Software demos are a lot like "reality" TV shows or infomercials – everything looks spontaneous and in a natural setting, but in reality they are highly scripted and use many tricks behind the scenes. Demos will be done with a special version, or "build", of the software, and presenters/assistants will run through the ... |
How can LOVE effect us positively/negatively in so many ways when nothing else can? | Cause love is the only thing that matters in the end. Or in a less poetic way, the only thing evolution gives a shit about is how many surviving offspring you get, and how many offspring they get and so on. So we have evolved to form bonds that would help with the survival of our offspring. As far as evolution is conce... |
In the court in the US why do we have to swear upon the Bible? | The answer is that you *don't* have to. Anyone can choose to give a secular solemn affirmation instead. The separation of church and state doesn't negate religion's use and meaning to individuals even in a government business context. Given that 75% of the population in the US is Christian it makes sense to allow the u... |
What is soap and how does it work? | Chemically, soap is the salt of a fatty acid, which means that it's a mixture of oil or fat and an alkali. Early soaps were made from animal fat and lye which is obtained by soaking wood ash in water. Modern soaps use vegetable oils rather than animal fats, and industrially produced alkalis. Soap molecules are non-symm... |
Why don't we abolish the debt ceiling? | It could only be abolished by Congress, but they'd never vote for that. They like the debt ceiling because it allows them grandstand and threaten a shutdown if they don't get what they want. They have no reason to give that up. |
What does a Radiologist do? | Radiologist are doctors that are experts in interpreting medical imaging, such as X-rays, CT scans, ultrasounds and MRIs. They will look at these images and try to find anything unusual. They are the doctors that usually have the final say on what is wrong on an image. Other doctors will usually ask radiologist to help... |
Why do some internships require you to receive college credit? | Legally any unpaid internship is required to benefit the intern and not the company. Requiring you to receive college credit is a good way for companies to demonstrate that you are benefiting so that they are not liable.Because it is illegal for you to 'work' for someone without receiving at least minimum wage. You hav... |
Is Fracking Federally Regulated? | Yes and no. I can only speak from my experience , but keep it in your mind that a lot of local people work on the locations you're talking about. Those people live, farm, work, hunt, fish, and raise their families around this stuff. They care about their work and about their communities. There is nothing around that re... |
How does ice melting raise the water level? Ice is less dense than water. | Ice is on the ground above the sea level. When it melts it runs downhill until it runs into the sea. Yes, when an iceberg melts the sea level does not rise. The sea level rose when the iceberg fell inImagine you have a glass of water. Now, you place a large square ice cube bigger than the opening on top of the glass. A... |
Why are drinks in California sold in aluminum bottles instead of plastic? | It’s actually fairly rare. There may be a rule against plastic bottles in the parks or something like that. While I have seen Diet Coke in aluminum bottles at the store, I’ve hardly ever seen anyone actually using them. Edit: looks like there was a rule banning plastic disposable water bottles in national parks until l... |
Why does the quality of Wi-Fi affect my phone more than it seems to affect my laptop? | Antenna size and associated gain. The smaller antenna in your phone cannot provide as strong a signal as the larger antenna in your laptop. |
How does someone tell if things are millions of years old? | [Carbon dating] and other similar techniques can be used to determine how old something is. We know that over time, elements decay. And we know how long it takes for half of the amount of a given element goes away. This amount of time is called Half Life. So scientists can work backwards to determine the age of things ... |
why don't I see the shadows of really big airplanes that fly about a mile overhead? | In order to see a shadow, something has to be between you and the source of light, something which would only happen for a fraction of a second for things at the height, size, and speed of an airplane. Something also has to have an angular size large enough to occlude the source of light. An aircraft at 10k+ feet has a... |
What explains the disconnect in our brains when we cannot "find" the car keys in our hand or the hat that is sitting right on top of our head? | When people think memory they don't often think about attention, but actually paying attention is half the battle. If you're busy thinking about something else you're not attending to what you're doing in the moment and are less likely to remember it . This is particularly true for tasks that you do you often and are l... |
Why do people and other animals sometimes get separated into two different categories? | Human conceit. Of course, it sort of makes sense - we're the only group of "animals" on the planet that have built on a large scale, do art, science, etc. At the same time, I'm sure that at least part of it is because nobody would want to accept that their ultimate goal in life/reason for being is still just to fuck an... |
How do TV programs work? | This is my first go at something like this Let's say you have a class in school that is 30 minutes long. Your teacher will be in charge those 30 minutes and show you certain things at certain times. She will show you the chalkboard, the bulletin board, a book, and other things, every eight minutes or so she show you so... |
What purpose does the USMC serve that the army doesn't? | The idea is that the USMC can serve as a fast reaction, forward deployed force. The army isnt neccesarily set up to have forces of various, but usually smaller size forward deployed at bases around the world. How have MAGTF's of various sizes, at the smallest it will be an infantry battalion, along with some armor, som... |
Why does BitCoins have value? | Why does any currency have value? Bitcoins have value because people are willing to pay for them . You have some companies dealing in bitcoins , and some places only accept bitcoins. Since some places accept it, there is a market for it. Since there is a market for it, it has value. Easy as that.Because people attribut... |
In light of the Forbes top billionaires, how and where do the richest people in the world keep their money? | The forbes list is largely based on known stock holdings or previous stock sales and presumed/inferred purchases. At one point Bill Gates owned about 49% of microsoft, he's down to about 5% but the foundation he controls with his wife to which he has donated a large portion of his assets has diverse stock and governmen... |
Why is it that extremely cold things can feel hot and vice versa? | To the molecules in your hands, feeling something cold is like being in a car that's slowing down and feeling something hot is like being in a car that is speeding up. But feeling something really hot is like being hit by a car and feeling something really cold is like hitting parked car. Either way you crash and it fe... |
Why don't performance (sports) cars use Diesel engines? | A petrol engine is more efficient at any given capacity compared to diesel. They are are great at moving smaller, lighter vehicles and getting them to any given speed relatively quickly. Diesel is more efficient at overcoming the inertia inherent in heavier and larger vehicles, but their greater mass means that it take... |
How is inflow/outflow rate calculated for reservoirs and dams like Lake Oroville? | Outflow is pretty easy, you measure the height of the water flowing through the spillway or other channels out of the reservoir and you can use some [math] to calculate the flow rate. For the inflow, you have to measure the flow rates of all the streams leading into the reservoir, which means you need to measure the si... |
What exactly is meant by the term US or Saudi oil reserves? | we do have that in the US , but the oil reserves they're mostly talking about is how much oil is technically possible to get, process and sell for profit. If you have a lot of oil trapped deep underground that would cost more to get than it would to sell, it's not part of the reserves. So the vast majority of oil reser... |
How the hell does anything to the power of zero equal one...? | From the initial definitions of powers it may seam like powers is only defined for positive values. So we have to look for a new definition that fits the properties. One obvious property of powers is that x^n-1 = x^n /x. If we set n=1 then we get x^0 = x^1 /x = x/x = 1. The same way can also be used to define negative ... |
Do bees know theyre going to die when they sting, and why doesnt the same happen with wasps? | Bees don't "know" anything in any meaningful sense. Their nervous systems aren't complex enough to allow that kind of abstract thought. They may not even be complex enough to even allow for feeling what we would call "emotions," even the most basic ones like anger, fear, and lust. They are simply acting according to ho... |
Why do we have to pay to freeze our credit? | > Considering that we never consented to them collecting our information in the first place, and the only way we can get them to stop sharing it is to pay them, how is that not extortion? You did consent to them collecting it. Inside of that dense packet of information that you agreed to when you signed up for your cre... |
What are human eyes better at than most animals? | Human eyes are not better than most animals. It depends on the animal and the environment. Yes, humans have good eyes in determining distance, and seeing far away and up close. Many sharks can see by starlight as clearly as we see in daylight. Owls and hawks can find the smallest prey from far away. Bees can see in the... |
Why does my Garmin GPS work anywhere but my iPhone GPS requires cell phone service? | The Garmin has all of its maps built in to the unit. The iPhone doesn't, it gets that from the network. The iPhone's GPS works anywhere, but the GPS only provides latitude, longitude and elevation. If it doesn't have access to a map, it's useless for navigation.The phone is likely not "useless" but partially it probabl... |
why are some acids such as hydrofluoric acid and HCl so good at dissolving solids on contact? What causes this? | Most of the time, the behavior of acids depends on two things: the strength of the acid and what the anion of the acid is . Hydrofluoric acid is an odd one. Unlike all of the other halogenic acids , HF is a weak acid; this is because the fluoride anion has a very high affinity for electrons and will hold on to any it c... |
What exactly is the Kaaba and what is its importance in Islam? | The Kaaba is the first Mosque that was built by Abraham and Ishmael. It contains the Black Stone, which was supposed to be a gift from the archangel Gabriel to Abraham Its supposedly the only piece of the existing structure that was placed by Abraham himself.It's the direction where we pray to and It's the place to do ... |
Why do some types of bottled water taste different than others | Both Aquafina and Dasani water are purified using reverse osmosis filtration. They are as close to pure water as is safe for the human body to consume . Many other brands of bottled water are simply bottled at source or are just sourced from municipal tap water. These brands of water tend to have high TDS and mineral c... |
How can red, green and blue pixels produce billions of colors on my computer screen? | Because the red, green and blue subpixels have more states than just on and off. Each one can be lit at 256 different levels, so this produces 256 *256 *256 different combinations, which is about 16.8 million colours. |
Why does smoking weed give you the "munchies"? | The active ingredients in marijuana bind to areas of the brain that influence hunger and satiety. THC binds to cannabinoid 1 and cannabinoid 2 receptors in the brain. The hypothalamus has large amounts of CB1 and CB2 receptors,d THC binds to these receptors and alters the functioning of the hypothalamus. Giving you the... |
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