Moon is in goldilocks zone but barren, what other criterions would declare a planet habitable? |
- Moon is in goldilocks zone but barren, what other criterions would declare a planet habitable?
- What in physics is fundamental?
- What happens inside the digestive system when a lactose intolerant person consumes dairy?
- How do cold blooded animals survive below freezing temperatures?
- We cook food so the heat kill bacteria - Does freezing to low temperatures work to kill bacteria too?
- Is a neutron star blue because of its immense gravity?
- Let’s say a planet is 200 light years away. How do we know? Do we actually keep a telescope pointed in that area for 200 years to get a reading? If not, why is information traveling faster than the speed of light?
- Can tensor cores be of any advantage to graphics rendering?
- Do people with thick hair just have more hair follicles of are they just thicker?
- Need help understanding the unification of the electric and magnetic forces into one?
- Can environmental factors change the half lives of radioactive elements?
- How does enthalpy, entropy, and Gibbs free energy all relate to each other?
- Can someone explain the galaxy rotation graph?
- What is the difference between actual exhaust velocity and effective exhaust velocity in a jet engine?
- How is energy conserved in negative resistance components?
- How “flat” is the universe?
- How many images does a CT scan produce?
- Do bugs shiver when cold?
- Is a CD-R a reliable timestamp for a file's creation date?
- Could the ISS cast a shadow on the moon during a lunar eclipse?
- How do you find an oxidation number from an atoms electron configuration?
- How does Bernoulli's Principle explain things like Water Jet Cutters which can be used to cut thick sheets of metal when it states that fast moving fluids have low pressure?
| Moon is in goldilocks zone but barren, what other criterions would declare a planet habitable? Posted: 14 Nov 2017 06:22 AM PST Especially with reference to the discoveries being announced every few months by NASA via Kepler observations, I wonder how just finding a planet in habitable zone should mean nothing - as moon would be an anamoly without any atmosphere or a very weak magnetic field. What observations could be made that could predict if a planet is likely to be habitable or not [link] [comments]  |
| What in physics is fundamental? Posted: 13 Nov 2017 07:46 AM PST Okay so I've had this question for a long time and got a variety of answers. If I were making a list of the fundamental laws of the universe, what equations, constants, and background knowledge would need to be on it? Would it just be Einstein's field equations and the standard model (can you write the standard model in one equation)? Would any equations that explain quantum or newtons laws be necessary or are these derivable from more basic laws? How bout the speed of light? Can everything we know be summed up in one equation like the photo posted? Thanks for any insight you can offer http://imgur.com/mWjeGca [link] [comments]  |
| What happens inside the digestive system when a lactose intolerant person consumes dairy? Posted: 14 Nov 2017 05:37 AM PST |
| How do cold blooded animals survive below freezing temperatures? Posted: 14 Nov 2017 05:26 AM PST I get that cold blooded animals take on the temperature of their environment and can deal with a wide range of body temperatures. From what I know, many of them decrease activity during winter when temperatures are lower. My question is specifically about temperatures below the freezing point of water. How can an organism survive it's body fluid changing from liquid to solid (especially since ice is less dense than water)? Or is there some mechanism or small amount of heating that prevents freezing of their fluids? [link] [comments]  |
| Posted: 14 Nov 2017 07:44 AM PST |
| Is a neutron star blue because of its immense gravity? Posted: 14 Nov 2017 05:24 AM PST
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| Posted: 13 Nov 2017 08:43 PM PST |
| Can tensor cores be of any advantage to graphics rendering? Posted: 14 Nov 2017 01:54 AM PST So GPUs seem to have a big advantage in machine learning, and the newest GPU designs are incorporating tensor cores. I'm wondering if this it's going to be a major change in graphics architecture like unified shaders were years ago, or if the usage/design will just diverge and specialize. [link] [comments]  |
| Do people with thick hair just have more hair follicles of are they just thicker? Posted: 14 Nov 2017 05:02 AM PST |
| Need help understanding the unification of the electric and magnetic forces into one? Posted: 13 Nov 2017 04:56 PM PST I understand that a photon, as the gauge boson for the electromagnetic force, mediates the EM force through its exchange and that photons have oscillating vibrations on two perpendicular planes. I think I understand (at least superficially) that these oscillating vibrations are in the electric and magnetic fields and they self-propagate. But today I also read that general relativity plays a role in the unification of these forces, in that a magnetic force is an electric force viewed from another reference frame and vice versa. Are the magnetic and electric forces the same force viewed differently or are they distinct phenomena that arise from each other? I'm sorry if this is a nonsensical question. [link] [comments]  |
| Can environmental factors change the half lives of radioactive elements? Posted: 13 Nov 2017 04:10 PM PST |
| How does enthalpy, entropy, and Gibbs free energy all relate to each other? Posted: 13 Nov 2017 01:47 PM PST Can someone summarize the effects on a reaction of changing the signs and magnitudes of delta G, delta H, and delta S in the equation Delta G= (Delta H)- (T)(Delta S) [link] [comments]  |
| Can someone explain the galaxy rotation graph? Posted: 13 Nov 2017 02:44 PM PST If you look at the Wikipedia page on galaxy rotation there is a graph that plots velocity against radius from the galaxy center. I get that the stars speed up of remain the same speed as they get further from the center which implies the existence of dark matter. What I don't get is that the theoretical graph of velocities should be v = sqrt(GM)/sqrt(r) bu Newton's laws. I don't understand why there is a maximum and then it recedes to 0 at the beginning of the graph (if the speed is supposed to approach infinity by Newton's prediction). [link] [comments]  |
| Posted: 13 Nov 2017 04:18 PM PST I'm asking because I've noticed that actual exhaust velocity is usually magnitudes lower than the effective exhaust velocity. Why is this? Also I know how to calculate effective exhaust velocity, but how exactly do you calculate actual exhaust velocity? Thanks [link] [comments]  |
| How is energy conserved in negative resistance components? Posted: 13 Nov 2017 04:19 PM PST Power seems to be generated? But where do the joules come from? [link] [comments]  |
| Posted: 13 Nov 2017 02:05 PM PST To my knowledge, planetary orbits in solar systems tend to align with their neighbors, so that they are nearly coplanar. Additionally, many galaxies take on relatively "flat" shapes. Does the observable universe follow the same pattern? That is, is there any tendency for the observable universe to be relatively larger in some dimensions than others? [link] [comments]  |
| How many images does a CT scan produce? Posted: 13 Nov 2017 04:51 PM PST |
| Posted: 13 Nov 2017 03:36 PM PST |
| Is a CD-R a reliable timestamp for a file's creation date? Posted: 13 Nov 2017 05:43 PM PST Hi, I have a couple of CD-R discs that I recorded various Word documents, text files, and images into (on Windows), back in 2007. I figured that since the data couldn't be erased or modified it would be reliable proof that that was the date they were created. But now I know that you can change the computer's clock to make a fake date, etc. So my question is, would the CD-R contain some sort of metadata that couldn't be modified, and that could be accessed to prove that the files were created when they actually were? [link] [comments]  |
| Could the ISS cast a shadow on the moon during a lunar eclipse? Posted: 13 Nov 2017 11:09 AM PST I know that the lunar eclipse is red due to light refraction in Earths atmosphere. So if the ISS flew in the path of the refracted light, could we see a shadow? [link] [comments]  |
| How do you find an oxidation number from an atoms electron configuration? Posted: 13 Nov 2017 04:42 PM PST |
| Posted: 13 Nov 2017 12:18 PM PST Been trying to figure this out for a test, thanks in advance! [link] [comments]  |
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