A few questions regarding the asteroid orbiting Earth NASA just announced..? |
- A few questions regarding the asteroid orbiting Earth NASA just announced..?
- If my body is already completely hydrated and I drink 16 oz of water, will I eventually pee out 16 oz of straight water (if my bladder is completely empty)?
- Is there a limit to the amount of diseases we can be immune to? Can our collection of memory T-cells run out of memory?
- Why do clouds form when you mix liquids of different densities?
- Are certain languages more adequately equipped to facilitate effective and efficient communication in the Information Age?
- How much bigger is the Great Pyramid of Giza in the hottest temperatures compared to the coldest?
- Why do chip manufacturers not design hexagonal chips for more yield from round silicone wafers?
- Under optimum conditions what actually limits plants growth rate?
- So, scientifically speaking, why is it that one's knees go weak upon an amorous interaction with someone?
- Would the asteroid belt eventually form a new planet?
- Why did Obesity only start to increase after 1990?
- Can we synthesise snake or other animals' venom?
- How does the maths for fission/fusion and binding energies work out?
- What is the margin of error of the Brexit referendum?
- Why can't we use space to see our history?
- How (un)likely is it that an unpredictable catastrophic astronomical event will hit earth?
- Insects don't have eyelids. How do the diurnal ones not get blinded by the sun?
- What are efficient chemical substances that are effective against flees and how do they work?
- How do tiny ants produce their distress calls?
- Why are the yarns in a rope twisted? Does it increase tensile strength?
- Why NPSH takes stagnation pressure into account and not just static pressure?
- Can I estimate the sound level in -dB from the distance between ripples in a glass of water at the position of the listener?
- How is it when we hold our breath, we sink in water, yet a dead body floats?
| A few questions regarding the asteroid orbiting Earth NASA just announced..? Posted: 25 Jun 2016 07:09 PM PDT So, I have lots of questions regarding this, many probably unanswerable. Could it collide with the moon? How could this affect things like our tides? How long has it been there? Could this arise in a matter of decades, or has it probably been there for centuries, millennia, or longer? Could we land our own satellites on it and take advantage of its apparently rather stable orbit? Would it be affecting our tides or weather at all? Could we see it with the naked eye, or with any at-home tech, any time soon? I presume it's unlikely to hit Earth anytime soon, looking at the article. How unlikely? Could it be mined for minerals? If anyone educated or experienced in anything related to this has any information, or even any guesswork, related to these questions, or even any more interesting info, I'd love to hear it :) I'm not used to being unable to google something and read pages of information on it, haha! Feel free to answer just one question, or even provide more info completely unrelated to my questions. Edit: RIP inbox. My mother always said I ask too many questions for my own good. [link] [comments]  |
| Posted: 25 Jun 2016 08:42 PM PDT |
| Posted: 26 Jun 2016 03:16 AM PDT Say one was given a viable vaccine regimen to all of the current diseases in the world, and no new strains/diseases arose. Would one be able to remain immune to all disease in the world? From my understanding, the majority of the memory T-cells in our body are naive, not yet exposed to pathogen. However, would the amount of memory T-cells in our body be able to efficiently maintain a database of all known diseases and maintain immunity? [link] [comments]  |
| Why do clouds form when you mix liquids of different densities? Posted: 26 Jun 2016 05:18 AM PDT Hi, I have a quick question: why when you mix liquids of different densities (acid and water, sirup and water) you see "clouds" where the two liquids are mixing? [link] [comments]  |
| Posted: 26 Jun 2016 04:39 AM PDT I'm wondering if there are facets of languages such as roots, abbreviations, and word length that have allowed the Information Age to progress faster into the culture of the native speakers? If so, which languages and why? [link] [comments]  |
| How much bigger is the Great Pyramid of Giza in the hottest temperatures compared to the coldest? Posted: 26 Jun 2016 04:39 AM PDT |
| Why do chip manufacturers not design hexagonal chips for more yield from round silicone wafers? Posted: 26 Jun 2016 04:36 AM PDT |
| Under optimum conditions what actually limits plants growth rate? Posted: 26 Jun 2016 04:30 AM PDT If a plant is getting the perfect amounts of everything it requires, what limits the growth rate? is there any way we could develop super-fast growing vegetables? [link] [comments]  |
| Posted: 26 Jun 2016 01:12 AM PDT In terms of weakness in general, why do humans feel it at times? Is it to appreciate strength more? I'm not meaning to get all philosophical here. [link] [comments]  |
| Would the asteroid belt eventually form a new planet? Posted: 26 Jun 2016 02:43 AM PDT |
| Why did Obesity only start to increase after 1990? Posted: 26 Jun 2016 02:40 AM PDT What happened after 1990 that caused obesity to increase? The break up of the USSR? [link] [comments]  |
| Can we synthesise snake or other animals' venom? Posted: 26 Jun 2016 05:53 AM PDT |
| How does the maths for fission/fusion and binding energies work out? Posted: 26 Jun 2016 05:17 AM PDT I've never quite been able to work out how the binding energies for fission and fusion make sense. I know the graph for binding energy per nucleon, and I understand it has something to do with that, but I can't help but find that the mass defect equations don't make sense. As an example for what I'm trying to understand, I'll use the classic deuterium-tritium fusion equation: H2 + H3 -> He4 + n + 17.6MeV Total number of neutrons remains constant, so there's no mass difference there, and total number of protons is the same, so same total mass either way. But for binding energy: So as a result, the total mass-energy in the equation increases by 17.58928MeV. Since the total energy has to remain constant, doesn't this mean that the system absorbed that 17.6MeV? I'm certain that this line of thinking is wrong somewhere. I used this website for the numbers, and I'm not concerned about the actual numbers. I just don't understand how the system both apparently increases in mass-energy and releases mass-energy. Shouldn't the original equation be: H2 + H3 + 17.6MeV -> He4 + n Once again, I know this is wrong. I'm just not sure how. [link] [comments]  |
| What is the margin of error of the Brexit referendum? Posted: 26 Jun 2016 05:15 AM PDT Assuming that a vote or election is just a survey of a really biased sample of the population, how sure can lawmakers be that the decision reflects the opinion of all eligible voters? [link] [comments]  |
| Why can't we use space to see our history? Posted: 26 Jun 2016 05:12 AM PDT I know a bit about science however it's not much. I was wondering what would stop us using the reflection of light off objects in space from seeing the out past For example if want to see 2000 and by chance there was an asteroid reflecting light 8 light years away what would stop you using the reflection to see it. I don't know if this is a stupid question but would love to know why I'm stupid I do. [link] [comments]  |
| How (un)likely is it that an unpredictable catastrophic astronomical event will hit earth? Posted: 25 Jun 2016 08:44 AM PDT The earth has been around for a seemingly very long time, without (for example) being hit by an asteroid so large that we're just obliterated. How likely is it that an event like this could occur without us having any chance to even be aware of it? [link] [comments]  |
| Insects don't have eyelids. How do the diurnal ones not get blinded by the sun? Posted: 25 Jun 2016 09:46 AM PDT |
| What are efficient chemical substances that are effective against flees and how do they work? Posted: 26 Jun 2016 04:30 AM PDT To be specific: cat flees There is a lot of misinformation around the Internet. Maybe someone with a scientific background could shed some light on this topic? Is not the most scientific question, but I don't think I'll get an honest answer anywhere else. Thanks in advance! [link] [comments]  |
| How do tiny ants produce their distress calls? Posted: 26 Jun 2016 12:38 AM PDT I used to catch bees a lot as a child. I'd sometimes get one pinned against whatever I was catching it with, say the lid of a Cool Whip container, and it would make a distressed sounding buzz. I assumed back then that it was the sound of the bee trying to fly its way out of its predicament. Fast forward to a couple years ago when I had a column of little brown ants going through my basement. I stretched out on the floor to watch them at work, and at one point pulled up a bit of linoleum they were going through to watch what they were doing there. When I released it, it curled back down and pinned an ant under it. It immediately started making a sound very similar to that of a trapped bee, albeit considerably higher in pitch and lower in volume. Are these distress calls? How are they made? I assumed that the bees were vibrating their wing muscles to make the noise, but worker ants never have wings. [link] [comments]  |
| Why are the yarns in a rope twisted? Does it increase tensile strength? Posted: 26 Jun 2016 04:23 AM PDT |
| Why NPSH takes stagnation pressure into account and not just static pressure? Posted: 26 Jun 2016 03:47 AM PDT Why NPSH takes stagnation pressure into account and not just static pressure? According to the formula: NPSH = (Static pressure + Dynamic pressure)@inlet - Vapor pressure So, if static pressure if way below vapor pressure but fluid is moving really fast, there might not be a high risk of cavitation. So it means that even though fluid is way below vapor pressure he's obviously not boiling? Why formula for NPSH isn't NPSH = (Static pressure)@inlet - Vapor pressure? [link] [comments]  |
| Posted: 26 Jun 2016 03:46 AM PDT If so, what would be lowest limit one could physically measure? I'm aware there are better ways of measuring the sound level, I'm just curious if it could be done with rudimentary tools and some rational thinking. [link] [comments]  |
| How is it when we hold our breath, we sink in water, yet a dead body floats? Posted: 25 Jun 2016 07:00 PM PDT |
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