Given the geometry of a metal ring (donut shaped), does thermal expansion cause the inner diameter to increase or decrease in size? |
- Given the geometry of a metal ring (donut shaped), does thermal expansion cause the inner diameter to increase or decrease in size?
- How do we know the core of the Earth is hot?
- Are there caves underneath the seabed?
- Can bird flu (h5n1) spread through vegetables?
- Why does licking your lips improve your ability to whistle?
- What DNA made this mRNA for the COViD-19 Vaccine?
- If mRNA translation errors are relatively common, how do cells prevent malformed proteins from getting out of control?
- What's the stongest organic acid that is present in the human body?
- Is there anything extraordinary about our location in the universe that isn't tied to the fact that life is possible here?
- What determines women's breast size?
- Why is the pressure caused by non compressible fluid inside the wider area of a pipe more than that in the narrower area?
- How are radio signals sent from space probes converted back into visual format?
- does losing a limb effect your life expectancy?
- Can an mRNA virus directly undergo translation in a eukaryotic cell upon infection?
- Can an aircraft wing or propeller cavitate like a boat propeller?
- What happens to the mass in a muon when it decays?
- Are brain games effective?
- Do any known environmental variables impact general intelligence (g) long term?
- Would Venus have ever been in the habitable zone?
- What does it mean when an object is irradiated?
| Posted: 23 Jan 2021 08:55 AM PST I can't tell if the expansion of the material will cause the material to expand inward thereby reducing the inner diameter or expand outward thereby increasing it. [link] [comments]  |
| How do we know the core of the Earth is hot? Posted: 24 Jan 2021 06:06 AM PST How do we know its really hot when no one has been to the core of the Earth? I get that there is magma and all, but where is the gaurantee that it's from the core? It could very well be from the mid layer [link] [comments]  |
| Are there caves underneath the seabed? Posted: 24 Jan 2021 01:43 AM PST For clarity sake, let's say the seabed of Marianas Trench. Are there caves under the seabed of the deepest depths of ocean? Are there caves underneath any segment of ocean? I know the ocean is deeper than any known cave, but hypothetically, could there be caves? If not, what is under the floor bed? Lava? Compact rock all the way down to the mantle? Tectonic plates? If you dug 1000 feet below Marianas Trench, what would you come across, if anything at all? [link] [comments]  |
| Can bird flu (h5n1) spread through vegetables? Posted: 24 Jan 2021 07:29 AM PST I read somewhere it can but now I can't find the source. I has caused a lot of embarrassment and it would be really helpful if someone can confirm this. [link] [comments]  |
| Why does licking your lips improve your ability to whistle? Posted: 23 Jan 2021 01:19 PM PST |
| What DNA made this mRNA for the COViD-19 Vaccine? Posted: 23 Jan 2021 07:38 PM PST Hi folks, Very not smart on this stuff but I see that the mRNA that is used in the recent COVID-19 vaccine might have to come from a cell or from DNA? What DNA made this mRNA or what cell line was used to make the mRNA. Thanks folks. [link] [comments]  |
| Posted: 23 Jan 2021 12:48 PM PST I read that one of the challenges with the mRNA COVID-19 vaccines is that mRNA breaks down pretty quickly. That made me curious what happens if a cell begins to translate mRNA that has already been partially degraded. While researching that I learned that translation errors are actually quite common. Presumably cells must have a way of dealing with this. Can anybody fill me in? EDIT: thanks for the informative answers! And just in case it's a different answer, my original question was: what, if any, danger is there in mRNA from COVID-19 vaccines becoming partially degraded and still translated by a cell? [link] [comments]  |
| What's the stongest organic acid that is present in the human body? Posted: 23 Jan 2021 11:05 AM PST |
| Posted: 23 Jan 2021 02:47 PM PST By "extraordinary," I mean a property that is highly uncommon in the universe. There are a few obvious ones: we're well above the 99.9th percentile in terms of how hot and how dense the space we occupy is. Our planet is also unique among others, insofar as it has liquid water, which most planets don't. But we would expect these properties to be present in an environment that can harbor life, so it's not tremendously interesting that they're present. Once you ignore the conditions necessary for life, there isn't anything obvious that remains that makes the space we occupy particularly out-of-the-ordinary. We seem to live with some run-of-the-mill neighboring planets, orbiting a main sequence star that sits in a relatively quiet part of a galaxy that is one of many Sb shaped galaxies in the observable universe. There are astronomical bodies that just so happen to have some cool properties that wouldn't appear to affect the capacity for life. Some planets have nonspherical moons, or moons with a particularly elliptical orbit, or live in a star system with an unusually large number of planets. Some star systems live inside nebulae. Some are on the very outskirts of their galaxy. Some galaxies are irregularly shaped, and some live in intergalactic voids. Our planet could have had any of these properties and life would still be possible (though it may look different). But it doesn't. But I'm not convinced that there aren't any interesting properties about where we are that aren't tied to life existing here in the universe. Is there anything about our planet, our star system, our local group, our galaxy, or our galactic cluster that is extraordinary merely by coincidence? [link] [comments]  |
| What determines women's breast size? Posted: 23 Jan 2021 11:36 AM PST Tried googling, and you can imagine how hard it was to find a clear scientific answer. I gather it's genetics, but what are the underlying reasons for various breast sizes, evolutionarily and adaptively speaking? How did this evolve over time? How does environment influence this characteristic? I am interested in specifics and the broader context. [link] [comments]  |
| Posted: 23 Jan 2021 11:38 PM PST So imagine there's a pipe and it is wide at one end and narrow at the other. Now using the equation of continuity, we know AV=constant therefore velocity of fluid will be more in the narrower part. Now since the velocity is more in the narrower end, I would assume that it's also exerting more pressure on the walls of the pipe and as the flow of fluid is slower in the wider part, the pressure would also be less. Also Pressure = Force/Area hence pressure is inversely proportional to area, which would further support my argument. But clearly, this thinking is wrong. I think we would use Bernoulli's principle here to determine the pressure relationship but I can't figure out how to do it. The only thing I know for sure is that pressure WILL be more in the wider part and less in the narrower part. Now I just need an explanation for this. [link] [comments]  |
| How are radio signals sent from space probes converted back into visual format? Posted: 23 Jan 2021 06:55 PM PST Like New Horizons or one of the Voyager spacecraft sending back a photo or video. [link] [comments]  |
| does losing a limb effect your life expectancy? Posted: 23 Jan 2021 12:37 PM PST |
| Can an mRNA virus directly undergo translation in a eukaryotic cell upon infection? Posted: 23 Jan 2021 12:18 PM PST I'm not sure if there are intermediate steps in between to prepare the mRNA or not. [link] [comments]  |
| Can an aircraft wing or propeller cavitate like a boat propeller? Posted: 23 Jan 2021 09:50 PM PST |
| What happens to the mass in a muon when it decays? Posted: 23 Jan 2021 08:01 PM PST Presumably the mass is converted into energy and shows up as a large jump in the kinetic energy of the electron and neutrinos. While doing some searching on the subject no mention was made of this so I am not sure this is correct. The mass difference is pretty large between the muon and its decay products so I figured any mass to energy conversion would be dramatic and thus noted. Another way to look at the same problem is if you were to accelerate a muon in a box and have it decay before exiting you could catch the electron and still have a net momentum gain equivalent to nearly 106 times the electrons mass. So perhaps all the energy ends up in the neutrinos as relativistic mass and we just don't detect it? [link] [comments]  |
| Posted: 23 Jan 2021 09:03 AM PST In this doucumentary https://www.imdb.com/title/tt3322570/., A guy sets on a journey to change imporve is brain with help of couple of scientist,first he goes by imrpoving his attention span by juggilng then he goes to next exercise called double decision . The scientist helping with him, claims this would help a tons imrpoving certain aspect of brain. [link] [comments]  |
| Do any known environmental variables impact general intelligence (g) long term? Posted: 23 Jan 2021 02:07 PM PST Not to confuse g with IQ - the latter is impacted by numerous environmental variables on the specific ability of a test question; the secular rise on IQ is known as the Flynn Effect, and is not on g. https://www.sciencedirect.com/science/article/abs/pii/S0160289614000105 But general intelligence. The highest domain in factor analysis of cognitive testing of ability. I'm aware of this study temporarily raising g in kindergarten children, supposedly. https://www.sciencedirect.com/science/article/abs/pii/S0273229716300144 This study finds the heritability of g at 0.86. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4002017/ Lead poisoning does not seem to impact g. https://www.sciencedirect.com/science/article/abs/pii/S0191886918304811 So am curious, given the importance of g in our individual lives and its accounting for the IQ gaps between groups, is there evidence g may be altered negatively or positively in modern societies excepting very extreme and unlikely circumstances (such as raising children with wolves, or bodily crippling famine to the point the brain can no longer grow)? https://www.reddit.com/r/samharris/comments/hwx44l/can_we_require_sources_for_statistics_in_this_sub/fzkwpdh?utm_source=reddit&utm_medium=usertext&context=3&utm_name=askpsychology&utm_content=t3_l3fm4g [link] [comments]  |
| Would Venus have ever been in the habitable zone? Posted: 23 Jan 2021 06:59 AM PST As the sun is ever expanding and the habitable zone moves outward, was there ever a time when Venus would have been in that zone? Further, is the zone large enough for two planets to occupy it at the same time? [link] [comments]  |
| What does it mean when an object is irradiated? Posted: 23 Jan 2021 04:11 PM PST Does this object now also emit radiation? When you hit an object with neutrons does the object then become unstable and thus becomes radioactive? [link] [comments]  |
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