[Mathematics] Probability Question - Do we treat coin flips as a set or individual flips? |
- [Mathematics] Probability Question - Do we treat coin flips as a set or individual flips?
- What's the fastest "big" thing in the universe?
- Where do babies get their stomach bacteria from and how?
- If a jar of different sized balls was shaken, which size would be at the bottom?
- Other than in circles, where does pi show up?
- Why are definitions in mathematics formulated as implications, but are treated as equivalences?
- Do all planets in our solar system revolve on the same plane?
- What happens on a molecular level when I burn my tongue?
- Are some languages easier to understand than others for Intelligent Personal Assistants like Google Now, Cortana, Siri?
- Why does adding heat change the equilibrium of products and reactants, so that the equilibrium is shifted to the left when temperature is increased for an exotheic rxn?
- A coin of unknown fairness is tossed N times. It results in H heads. What can you tell me about the coin?
- [Physics] How come no fluids in a car freeze when the temperature outside can drop to -10°C?
- Have the newly discovered elements existed in nature before? Or are they purely artificial 'creations'?
- Does it matter from which plant pollen comes from when creating a seed?
- [Mathematics] What is the two-dimensional analog of a Möbius band?
- Why does gold "blink over" when it becomes pure?
- Could it ever be economically feasible to synthesize rare elements?
- Is there a limit to the size of an element?
- Internally, how does someone heal if shot and the bullet goes clean through?
| [Mathematics] Probability Question - Do we treat coin flips as a set or individual flips? Posted: 04 Jan 2016 12:26 PM PST /r/psychology is having a debate on the gamblers fallacy, and I was hoping /r/askscience could help me understand better. Here's the scenario. A coin has been flipped 10 times and landed on heads every time. You have an opportunity to bet on the next flip. I say you bet on tails, the chances of 11 heads in a row is 4%. Others say you can disregard this as the individual flip chance is 50% making heads just as likely as tails. Assuming this is a brand new (non-defective) coin that hasn't been flipped before — which do you bet? [link] [704 comments]  |
| What's the fastest "big" thing in the universe? Posted: 04 Jan 2016 07:17 AM PST Something on astronomical level, like a comet, planet, star, etc (the expansion of the universe itself?) Somewhere I've read there are stars orbiting the center of our galaxy at about 1% speed of light. Is that true and is there anything faster? [link] [172 comments]  |
| Where do babies get their stomach bacteria from and how? Posted: 04 Jan 2016 06:54 AM PST I assume they have it before birth so when they come out they can eat but how would just be done? [link] [96 comments]  |
| If a jar of different sized balls was shaken, which size would be at the bottom? Posted: 04 Jan 2016 10:39 AM PST For simplicity, say there are 3 different sized balls: small, medium and large. There are many of each size in a closed container with room for them to move. if the container is shaken for a long time, would there be a higher chance of any size of the balls being in a specific position, bottom or top. [link] [35 comments]  |
| Other than in circles, where does pi show up? Posted: 04 Jan 2016 06:45 PM PST |
| Why are definitions in mathematics formulated as implications, but are treated as equivalences? Posted: 05 Jan 2016 06:33 AM PST Considering that the difference between conditional and biconditional would be relevant anywhere else in mathematics, why are definitions different in the respect? [link] [1 comment]  |
| Do all planets in our solar system revolve on the same plane? Posted: 04 Jan 2016 05:22 AM PST Are there any accurate diagrams of the planes that all the planets orbit on? If Earth suddenly changed to let's say to a plane 90° off of its current plane would there be any noticeable differences? [link] [38 comments]  |
| What happens on a molecular level when I burn my tongue? Posted: 04 Jan 2016 06:55 PM PST I was drinking tea the other day and I burnt my tongue by not waiting long enough. I know that the tongue heals relatively fast, as it's only been 3 days and now I can taste things again, but what happens to my taste receptor cells, and are the connections to the first synapse damaged? Do they have to regrow? How do they regrow (I know we don't necessarily know how/what neurotransmitter leads to making the same taste receptor connections, but I want to know the other parts of regrowth). Just curious! Thanks! [link] [4 comments]  |
| Posted: 04 Jan 2016 03:39 AM PST I don't really know what kind of algorithms are used by IPAs to distinguish between similar spoken words. From a computational perspective, is there an "easier" language that can be understood/heard? If so, is it the one that has the biggest range of frequencies emitted? Or the one which the words are the most different from each other? Can languages be distinguished in a listenability scale choosing some core factors that features them? [link] [3 comments]  |
| Posted: 04 Jan 2016 07:31 PM PST It makes intuitive sense...at higher temps, energy is transferred to the molecules allowing more of them to adopt higher energy states...but could someone give me a more detailed, quantitative explanation? Would it be incorrect to state that at higher temperatures and for a spontaneous reaction that has proceeded to equilibrium, more energy would be picked up by those more stable products allowing more of those molecules to reach transition state levels than would have occurred at lower temperatures? And by this i mean would increasing temperature result in greater percentage increase of products seeing the transition state vs reactants, causing the shift in equilibrium? [link] [7 comments]  |
| Posted: 05 Jan 2016 03:27 AM PST Imagine it's tossed 10 times. Even if it's all heads, you can't be sure if it's unfair, or to what extent. All you know for certain is that it is not an "all-tails" coin. I'm not entirely sure how the answer would be framed, but I assume there is some probability distribution for the "heads-ness" of the coin that changes with each result. Eg: After N flips, given some results, there is a Q% chance the coin is P likely to give you heads... I'd love to see the answer derived. And, also, how would one go about this if it were a S-sided coin -- that is, we're not even sure how many possible outcomes there can be? For a coin, even with all heads results, I assume we'll think there is some chance of tails coming up -- does that means there is some chance of some other side turning up? If so, aren't there infinitely many possible sides, how is this resolved? [link] [2 comments]  |
| [Physics] How come no fluids in a car freeze when the temperature outside can drop to -10°C? Posted: 04 Jan 2016 09:09 PM PST Why doesn't the windshield fluid freeze or the coolant or even the gasoline? I know it has something to do with density and the likes but could somebody explain more? Thanks [link] [3 comments]  |
| Posted: 04 Jan 2016 08:34 PM PST |
| Does it matter from which plant pollen comes from when creating a seed? Posted: 04 Jan 2016 06:55 AM PST Will pollen from a rose pollinate a lily just the same as any other plant? [link] [11 comments]  |
| [Mathematics] What is the two-dimensional analog of a Möbius band? Posted: 04 Jan 2016 04:05 PM PST That is, how would a one-dimensional "length" be manipulated in two dimensions such that it has the same effect of only having one "side?" I figure that the sides of this length of one-dimensional material would be its two long edges, the directions of which a line would be extended into in order to form a surface in two-dimensional space. In the same way, the sides of the two-dimensional surface used to form a Möbius band are its extensions into three-dimensional space. However, I cannot fathom a twist of this line (which does not cause it to extend into the third dimension) that could cause one side to run into the other, and vice-versa. I feel that my description would be helped by a better understanding (and use of) normal vectors, but this is the best I can do at the moment. [link] [5 comments]  |
| Why does gold "blink over" when it becomes pure? Posted: 04 Jan 2016 04:21 PM PST I was watching this episode from Cody's Lab when he mentions the gold "blinking over" when it becomes pure (around 11:52). Why does it do this and what causes it to happen? [link] [2 comments]  |
| Could it ever be economically feasible to synthesize rare elements? Posted: 04 Jan 2016 08:21 PM PST As some brief research indicates, elements can be synthesized through radioactive decay or by launching particles into each other. Could valuable elements like gold or platinum ever be synthesized in an economically feasible way? Is it a legitimate plan B if we ever run out of trace elements? Is any of this already being done? [link] [3 comments]  |
| Is there a limit to the size of an element? Posted: 04 Jan 2016 08:22 PM PST I saw that the four new elements were recently discovered. I was wondering, is there any limit to the atomic mass an element can have? Sorry if this is a repost! [link] [11 comments]  |
| Internally, how does someone heal if shot and the bullet goes clean through? Posted: 04 Jan 2016 02:22 PM PST Does everything heal such as tissue? what if an artery or vein or something else is hit? [link] [2 comments]  |
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