If a supersonic engine was attached to commercial airplane, would the plane be able to fly? |
- If a supersonic engine was attached to commercial airplane, would the plane be able to fly?
- What caused the super-continent Pangea to split up in the first place? Is that same force still driving the plates in their movement?
- Is there a taste equivalent of olfactory fatigue?
- Is gravity better described as a symptom?
- How can a sealed cave maintain enough energy to keep the organisms alive?
- If you slowed down the cooling of glass to a solid, could it form a crystalline structure?
- Magnetic Spin of Electron, +1/2 or -1/2, does one state have a lower energy?
- Why is it that some molecules can have two opposite effects?
- I just did something amazing. Can someone help me settle my disagreement with my wife iver just how amazing it was?
- Why does cancer form in organs but not in your arms or legs?
- Are we under-applying bacillus thuringiensis israelensis (Bti) rendering it ineffective for mosquito abatement?
- Is Magma the Same?
| If a supersonic engine was attached to commercial airplane, would the plane be able to fly? Posted: 12 May 2016 08:53 PM PDT Hence, the plane would be flying in supersonic speed. normal airplane as in commercial plane, boeing 747 etc. [link] [comments]  |
| Posted: 12 May 2016 08:46 PM PDT |
| Is there a taste equivalent of olfactory fatigue? Posted: 12 May 2016 07:55 PM PDT I was chatting with another engineer at work about a time when I worked in a lab and someone cracked open a bottle of mercaptan to draw off a sample. They opened the bottle too much. We didn't smell anything after a few seconds, but the neighbors across from us reported a natural gas leak to the fire department. In relaying this story, we got wondering: is there an equivalent to olfactory fatigue for taste? What kind of things would trigger it (spice, etc.)? Thanks! [link] [comments]  |
| Is gravity better described as a symptom? Posted: 12 May 2016 07:35 PM PDT I was talking to a friend with my limited understanding of how space/time warping causes gravity. He was using the "Law of Gravity" as ammo for his "lawgiver" or creator argument. That nonsense aside, was I wrong or inaccurate saying it is less of a force or a law, but more of an effect or a symptom of mass on the fabric of space/time? [link] [comments]  |
| How can a sealed cave maintain enough energy to keep the organisms alive? Posted: 12 May 2016 09:09 AM PDT Referring to this TIL post: https://www.reddit.com/r/todayilearned/comments/4iznwi/til_romanian_sewer_workers_accidentally/ We're told that the sun is indirectly responsible for all the energy that we have in our world, and that all life needs the Sun for their energy consumption through the food chain. But a cave was discovered that had been sealed off for 5.5 Million years. How were the organisms able to maintain life and reproduction for that long, when the entropy of the system should have killed them off long ago? [link] [comments]  |
| If you slowed down the cooling of glass to a solid, could it form a crystalline structure? Posted: 12 May 2016 10:12 AM PDT From reading it seems that glass is an amorphous solid because it cools too quickly for the molecules to line up. If you were to slow down the cooling process enough, could it form a crystalline structure? If so, would the properties of the glass change in any noticeable way? [link] [comments]  |
| Magnetic Spin of Electron, +1/2 or -1/2, does one state have a lower energy? Posted: 12 May 2016 01:03 PM PDT Let's say a subshell is half-filled, will the electrons have a magnetic spin number +1/2? Or can they all have -1/2? Do atoms have a preference of + or - here? Is the +1/2 or -1/2 purely a conventional thing? Or is there an empirical way to look at a single electron and say, that's UP! Thanks [link] [comments]  |
| Why is it that some molecules can have two opposite effects? Posted: 12 May 2016 11:39 AM PDT How is it that a molecule, such as prostagladin, can have two opposite affects on one type of tissue, i.e. it can cause both contraction or dilation of smooth muscle. Does it depend on the certain receptors expressed in the tissue or is it something to do with the different signaling pathways that might be active? [link] [comments]  |
| Posted: 12 May 2016 05:01 AM PDT My wife and I were pulling M&Ms out of a two pound bag of M&Ms and trying to guess what color we had pulled out before looking at it. This quickly escalated to guessing pairs and then triplets. So, I would say, "blue, red, and red," and reach into the bag and pull out three. Neither of us got the triplet but my wife guessed the pair three different times. She was getting braggy, so I declared, "I'm about to win the lottery!" I then called six colors (brown, brown, red, blue, green, and yellow). I closed my eyes and pulled six candies and Holy Mother of Shat and Fortune I pulled those six colors out. Obviously, we both freaked out. Now, I want to know what the probability is of doing this. My wife thinks it's 1/6 X 1/6 X 1/6 X 1/6 X 1/6 X 1/6, because there are six colors in the bag so each pull is a 1/6 chance to guess right assuming even distribution of colors. This puts it at about 1/46,656. I feel like it must be lower, because if I pulled six times, I might have pulled wrong one, but corrected it with the next pull. Like the first pull could have been blue, not brown as I was guessed first, then the second pull could have been brown to "fix" the first one. Since I'm drawing six, wouldn't it increase the chances of getting each one right? Right? Maybe? Help! [link] [comments]  |
| Why does cancer form in organs but not in your arms or legs? Posted: 12 May 2016 01:26 PM PDT I've never heard of leg cancer or finger cancer. Maybe they exist but ya idk. [link] [comments]  |
| Posted: 12 May 2016 10:29 AM PDT I know from multiple personal experiences that commercial Bti mosquito bits can be extremely effective when applied weekly to waterfowl lakes and ponds, including over wide urban areas. However, the instructions on the commercial products say to apply every 60 days, but typical research-focused data sheets say, "Bti may remain effective from 24 hours to over one month." Why the discrepancy? Furthermore, WHO recommends application in drinking water resevoirs but its US EPA reregistration forbids it. Why? Please see also Yousten et al. (1992) "Fate of Bacillus sphaericus and Bacillus thuringiensis serovar israelensis in the aquatic environment." Journal of the American Mosquito Control Association, 8:143–8 ("laboratory studies may overestimate spore longevity in the environment") and this report which confirms that, "the lack of significant levels of resistance in field mosquito populations treated for decades with Bti-bioinsecticide suggests that this bacterium will be an effective biocontrol agent for years to come." [link] [comments]  |
| Posted: 11 May 2016 08:47 PM PDT Is all magma the same? for example if you have a piece of shale and it melts into molten rock (magma), would the magma be the same magma as molten marble? Or would the magma be made of a different combination of materials. [link] [comments]  |
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