When rockets launch they must have tonnes of momentum from the earth spin and orbit. Is this used to their advantage when plotting a course? |
- When rockets launch they must have tonnes of momentum from the earth spin and orbit. Is this used to their advantage when plotting a course?
- Does every layer of the atmosphere have the same angular velocity as earth's surface?
- Why don't dinosaur exhibits in museums have sternums?
- How are large amounts of gas like Helium collected and then put into a tank?
- Is the sparking that occurs when metal is put in a microwave the photoelectric effect?
- If I flew away from Earth faster than light and looked back through a telescope, could I see a 'rewind' of time?
- Proportionally, how much of what we see in the night sky are actually stars and how much are in fact distant galaxies that look like single stars?
- How does supersymmetry work and can we measure/see the superpartners?
- Can we use giant carbon scrubbers to terraform Mars?
- Why when we look at a source of light in a long distance, it looks like it is twinkling?
- How do plants protect themselves from sun damage?
- What is the distribution for a set number of trials where a certain number of successes ends the trial?
- [Physics] How do GPS devices compensate for perturbations in the orbits of GPS satellites?
- Why Do Both Fission & Fusion Release Energy?
- How can both momentum and kinetic energy be conserved is a inelastic collision in a closed system?
- How does High/low blood pressure kills you?
- What is inflammation in the body exactly?
- Is there a reason that the superposition "works" in so many situations, or is the fact that so many physical properties are representable by a linear system a happy coincidence/approximation that is backed up by experiment?
- How precisely has the speed of light been calculated, and how?
- How fast could a universe-sized black hole expand? (from xkcd)
| Posted: 12 Jun 2016 07:26 AM PDT |
| Does every layer of the atmosphere have the same angular velocity as earth's surface? Posted: 13 Jun 2016 06:26 AM PDT By going higher in the atmosphere, gravity decreases but how does that effect atmosphere's angular velocity? [link] [comments]  |
| Why don't dinosaur exhibits in museums have sternums? Posted: 13 Jun 2016 06:07 AM PDT With he exception of pterodactyls, which have an armor-like bone in the ribs. [link] [comments]  |
| How are large amounts of gas like Helium collected and then put into a tank? Posted: 12 Jun 2016 08:34 PM PDT |
| Is the sparking that occurs when metal is put in a microwave the photoelectric effect? Posted: 13 Jun 2016 01:51 AM PDT |
| Posted: 13 Jun 2016 04:46 AM PDT If we were to disregard the possibility of travelling faster than light and the telescope lenses needed, would it actually be possible to 'rewind' time by seeing older photons? Do you even need to travel faster than light? Unfortunately, you'd have to travel way further than Alpha Centauri to see anything worth looking at, but theoretically it'd be pretty cool. [link] [comments]  |
| Posted: 12 Jun 2016 01:39 PM PDT |
| How does supersymmetry work and can we measure/see the superpartners? Posted: 12 Jun 2016 02:29 PM PDT How does supersymmetry show itself, what suggests that it is real? And finally, the potential superpartners, are they measurable in any way and how would we know if we find them? [link] [comments]  |
| Can we use giant carbon scrubbers to terraform Mars? Posted: 13 Jun 2016 04:20 AM PDT [link] [comments]  |
| Why when we look at a source of light in a long distance, it looks like it is twinkling? Posted: 12 Jun 2016 08:28 PM PDT I'm talking about stars, street lamps, etc. If there is nothing on the way, and they are emiting light all the time, why do they spark? [link] [comments]  |
| How do plants protect themselves from sun damage? Posted: 12 Jun 2016 02:22 PM PDT |
| Posted: 12 Jun 2016 05:27 PM PDT For example, lets say I wanted to flip a coin 5 times, and want the probability of 3 successes, but 3 successes also ends the trial. That means there is no possibility of 4 or 5 successes. I don't think its a binomial distribution because of the restriction, but how would you calculate it? Edit: Thanks for the answers guys! All made sense [link] [comments]  |
| [Physics] How do GPS devices compensate for perturbations in the orbits of GPS satellites? Posted: 12 Jun 2016 04:23 PM PDT Since the way GPS works only tells a device where it is relative to the satellites the device has to know where the satellites are, so how does it compensate for perturbations in the orbits of those satellites which make their positions less predictable especially over a long time-span? Is station-keeping enough for that amount of precision? Do the satellites also send the parameters of their current orbit to the device? [link] [comments]  |
| Why Do Both Fission & Fusion Release Energy? Posted: 12 Jun 2016 12:20 PM PDT My thinking is that they're opposites so surely they can't both release energy. I'm obviously wrong but I don't know why. [link] [comments]  |
| How can both momentum and kinetic energy be conserved is a inelastic collision in a closed system? Posted: 13 Jun 2016 05:08 AM PDT |
| How does High/low blood pressure kills you? Posted: 12 Jun 2016 11:13 AM PDT i know it probably has something to do with tiering of the muscles needed to contract the veins but woulnd't constant train make them tougher? Also as a secondary question, How high would blood pressure need to be for you to literally "blow up"? [link] [comments]  |
| What is inflammation in the body exactly? Posted: 12 Jun 2016 11:06 AM PDT What is actually happening when something gets inflamed? Is all inflammation the exact same process? Do some people have a kind of chronic inflammation in their bodies due to external environmental factors like environmental chemicals or diet? [link] [comments]  |
| Posted: 12 Jun 2016 11:16 AM PDT Is there any reason to believe that we're simplifying things by assuming that so many properties of the universe are linear? I know that chromatic forces aren't linear, so why should so many other things be? On a personal level, it bothers me how convenient it seems. (resubmitted - the last one got blocked because it wasn't tagged) [link] [comments]  |
| How precisely has the speed of light been calculated, and how? Posted: 12 Jun 2016 10:14 PM PDT |
| How fast could a universe-sized black hole expand? (from xkcd) Posted: 12 Jun 2016 09:08 AM PDT Link: http://what-if.xkcd.com/140/ Relevant quote from the end: "But for now, at least, nearby galaxies would be safe. Since the gravitational influence of the black hole can only expand outward at the speed of light, much of the universe around us would remain blissfully unaware of our ridiculous electron experiment." Considering that most laws of physics break down at this point, is the speed of light a law which we can count on even in this kind of scenario? Specifically, how is this different than the big bang, considering they both have similar amounts of energy, and the big bang was not bounded by the speed of light? Or, as this is already a relatively absurd question, do we just not know enough to make an accurate guess about what would happen? [link] [comments]  |
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