Does running a mile in 10 minutes burn the same number of calories as walking a mile in 20 minutes? |
- Does running a mile in 10 minutes burn the same number of calories as walking a mile in 20 minutes?
- Are there kinds of stars in the universe that are completely "abnormal" compared to stars that we know of?
- What are the differences between a GPU and a CPU? How is the GPU able to render graphics better?
- Will a concave mirror cancel out the convex mirror effect and vice versa?
- If an object with mass is moving near the speed of light towards me. Does the light reflected from that object "blue shift" into dangerous gamma rays?
- Why can't we create electricity to charge electric vehicles from the rotation of the wheels?
- In the current planning of long-term missions on the Moon, Mars and asteroids, how is the issue of bringing back to Earth terrestrial life forms being addressed?
- When people are allergic to certain animals, what is it about the animals that the human body reacts badly to?
- You're looking at a giant chunk of radioactive material. Are there any visible indications of decay?
- Why does the sun have a well defined surface instead of a smooth transition from dense to diffuse? In other words why doesn't the sun look fuzzy?
- How much energy will the ITER produce if successful--in layman's terms?
- How does a hypernova occur?
- Is there a material that is the equivalent of a superconductor, but for light instead of electricity?
- How do reaction mechanisms go from proposed to approved?
- Why do batteries have internal resistance?
| Does running a mile in 10 minutes burn the same number of calories as walking a mile in 20 minutes? Posted: 02 Oct 2017 03:51 PM PDT |
| Posted: 02 Oct 2017 12:38 PM PDT I know of black holes, neutron stars / pulsars, brown dwarfs, and hypergiants... But what else? [link] [comments]  |
| What are the differences between a GPU and a CPU? How is the GPU able to render graphics better? Posted: 02 Oct 2017 06:35 PM PDT |
| Will a concave mirror cancel out the convex mirror effect and vice versa? Posted: 02 Oct 2017 05:22 PM PDT |
| Posted: 02 Oct 2017 06:54 PM PDT So it is my understanding that the light coming from objects moving toward an observer is "blue shifted" and the wavelengths compressed. If this is true can the light be so shifted that it is harmful to an observer? For example, if say "the flash" was holding a flashlight and running toward me at relativistic speeds, does the light get compressed to gamma rays? [link] [comments]  |
| Why can't we create electricity to charge electric vehicles from the rotation of the wheels? Posted: 02 Oct 2017 08:50 PM PDT |
| Posted: 03 Oct 2017 02:04 AM PDT EDIT: I just want to make clear that I am thinking about terrestrial life forms that after surviving in space are brought back to Earth, not alien forms of life and I am not asking about protecting other planets, but the Earth. Since governments and private companies are planning long-term missions, colonies and mining activities on other celestial bodies, and given that some terrestrial life forms will survive and become very resistant to harsh conditions, what measures are being established now while planning those missions in order to avoid spreading these organisms on Earth? [link] [comments]  |
| Posted: 03 Oct 2017 05:32 AM PDT |
| You're looking at a giant chunk of radioactive material. Are there any visible indications of decay? Posted: 02 Oct 2017 04:13 PM PDT Like if the half-life of the isotope is 15 minutes or so, could you look at it and be able to see that it's decaying with the naked eye? [link] [comments]  |
| Posted: 02 Oct 2017 11:43 AM PDT Do the rules regarding the density of a plasma yield the observed solar surface? [link] [comments]  |
| How much energy will the ITER produce if successful--in layman's terms? Posted: 02 Oct 2017 08:20 AM PDT I was reading this article which states that the ITER will produce 500MW of power out of an input of 50MW. The efficiency itself is very exciting, but what does it actually mean? How many homes can you run on that, and for how long? And will it produce 500MW a day, 500MW an hour...? Bonus: Assuming ITER works 100% as intended, will they use it commercially or is it just a proof-of-concept? What'll the lifespan of this behemoth of a reactor be in a best case scenario? [link] [comments]  |
| Posted: 02 Oct 2017 05:56 PM PDT I know it has something to do with a supernova having a supernova. [link] [comments]  |
| Posted: 02 Oct 2017 12:47 PM PDT I understand that there are "superconducting" materials which can achieve an electrical resistance of zero ohms - is there a similar material or class of materials (not a vacuum) that can achieve a zero attenuation for light or other EM wavelengths? [link] [comments]  |
| How do reaction mechanisms go from proposed to approved? Posted: 02 Oct 2017 05:19 PM PDT Pretty much what it says in the title, I've just been wondering lately, what makes a mechanism be recognized by the scientific community as the most likely thing that happens on the molecular/atomic level when the corresponding chemical reaction takes place in real life? [link] [comments]  |
| Why do batteries have internal resistance? Posted: 02 Oct 2017 08:44 AM PDT College student here with some questions after my basic EMF physics lecture. The prof brought up a lot of things but can't go over them due to time constraints so I'd ask here. 1) Why do batteries have internal resistance? 2) How does a defibrillator return the heart to a normal beating rate when such a current through the body would stop it in the first place? 3) Why has the conventional "positive charges flow" not been changed now we know it is electrons that move through the circuit? Thank you everyone for your time, I'm sure to be back with more questions in the future. [link] [comments]  |
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