With a heavy vehicle trying to stop on snow, what is the relationship between the higher mass increasing traction on the snow, but also increasing the momentum that has to be stopped? |
- With a heavy vehicle trying to stop on snow, what is the relationship between the higher mass increasing traction on the snow, but also increasing the momentum that has to be stopped?
- Would it be more fuel efficient and less dangerous to float a rocket into the upper atmosphere with balloons before igniting the boosters?
- Can we construct regular polyhedra of arbitrary number of faces?
- If the ratio of matter to antimatter during the Big Bang was the opposite (1 billion matter particles to 1 billion and 1 antimatter particles) then is there any reason that we wouldn't have a universe made out of antimatter?
- Plasma: how can the same phase of matter seem so eclectic in its behaviour?
- If there's no such thing as a perpetual motion machine, what keeps electrons constantly on the move and what causes light to "speed back up" when it moves through air and then water and then back into air?
- Glass: Liquid, Solid, or Something Else?
- Why are radio frequencies split into radio waves and microwaves?
- How much money (USD) is one electron worth?
- What is "unity" when referring to nuclear fusion?
- If consciousness is the information stored in the brain, could the information be altered such that the same brain becomes a completely different person/consciousness?
- Do prime numbers cease to exist at some point on the number line?
- When you connect a voltage to a wire, how long will it take for it to be observable on the other end of the wire? Does the voltage propgate via electrons at the speed of light? Or is it slower?
- Does a black hole generate a magnetic field?
- How do 2 particles get entangled?
- If hydrogen and oxygen are highly explosive when combined, then why isn't water, or at least steam, explosive?
- How many dimensions in the universe are expanding ?
- If you put a helium balloon in space. Which way would it float?
- Why is protein an information sink?
- What effects does the ambient temperature have on the combustion process (fire starting)?
- When sound is loud enough to be damaging to your hearing, at what rate do you damage your hair cells?
- How do rockets burn in space if there is no oxygen?
- What is happening in terms of Quantum Field Theory when matter and anti-matter interact? Is it like destructive interference between wavefunctions, analogous to classical wave interference?
| Posted: I often see pickups loaded with snow for traction, but it seems like extra weight might work against you at a certain point [link] [comments]  |
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| Can we construct regular polyhedra of arbitrary number of faces? Posted: It is known that there are only five regular polyhedra in 3D. I was wondering what would happen if one constrains an arbitrary number of repulsive points to the surface of a sphere. Would they find a steady state? [link] [comments]  |
| Posted: Saw a video about matter and antimatter by Minute Physics and got me thinking. [link] [comments]  |
| Plasma: how can the same phase of matter seem so eclectic in its behaviour? Posted: Are different types of plasma as uniquely behaved as they seem, or is their apparent broad categorization justified? I don't know if this question is naïve, and I am a layman. Lightning, stellar surfaces, fire, aurora, etc. are all categorized as types of plasma, or at least partially so, but behave and appear quite differently. Does this mean that the phase is just a general term for ionized energetic gases, or that they're more similar than they seem to the untrained eye, with concise explanations for the different behaviours? For instance, why doesn't lightning ever follow the convection rules of how fire spreads, or why doesn't fire get conducted into bolts? Shouldn't all plasma transfer energy similarly? The question stems from other phases: liquids and other phases have recognizable and consistent patterns of behaviours. Plasma seems to be more indie. Sorry for the long post. It feels like I'm just missing one or two simple pieces to make sense of it. Searching the Web just led to overcomplicated papers or TV sales. [link] [comments]  |
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| Glass: Liquid, Solid, or Something Else? Posted: After reading a fair bit on what state of matter room temp glass is, I have concluded that I don't know what to think. So, can anyone give me a definitive answer of whether or not glass is a liquid or solid? [link] [comments]  |
| Why are radio frequencies split into radio waves and microwaves? Posted: I'm doing a project for school on radio frequency and how it is used for communication. However, it has been extremely hard to find any information on why it is split into radio waves and microwaves. [link] [comments]  |
| How much money (USD) is one electron worth? Posted: Very broad question, but I started thinking about this while reading about rooftop solar panels, and selling energy back to providers. So lets assume this context for the question. I would guess the value of one electron in the energy grid is a decimal, followed by many zeroes before the first nonzero digit. However, I'm really not sure how one would calculate that. So, how would you calculate this, and what would you estimate the value to be? [link] [comments]  |
| What is "unity" when referring to nuclear fusion? Posted: I am reading the article here: http://www.nature.com/nature/journal/v506/n7488/pdf/nature13008.pdf [link] [comments]  |
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| Do prime numbers cease to exist at some point on the number line? Posted: I know there is a largest known prime number, but theoretically, will there be no more prime numbers past a point? [link] [comments]  |
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| Does a black hole generate a magnetic field? Posted: |
| How do 2 particles get entangled? Posted: i've been watching videos and reading up about a bunch of cosmology and quantum physics stuff and am trying to wrap my head around entanglement. i understand for 2 particles that are entangled, when you measure the spin (or other quantum characteristic) on one you instantaneously know what the spin on the other is, regardless of their separation. I watched a video where they showed a process of measuring entangled photons by splitting a diagonally propagating laser beam with polarizers, so that when two photons split, and they measure the polarization of one of the photons, they knew the other. but how/when are particles entangled? do you only get entanglement when a particle splits somehow, or can two nearby electrons be entangled somehow? TL;DR does entanglement only happen when 2 particles are created together and are somehow linked, or can 2 non entangled particles somehow become entangled? if so, how? [link] [comments]  |
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| How many dimensions in the universe are expanding ? Posted: The observances of red shifts of galaxies eventually led to the proof that the universe is expanding. Hubble's expansion law states that H=v/d (where H: Hubble's constant, v:galaxy's radial outward velocity (referenced from Earth), d:the galaxy's distance from earth). Velocity here is a vector in 3D. I was thinking about this was wondering that since the expanding universe is a true physical phenomenon, then what are the answers to the following questions: (1) How can expanding universe phenomenon be interpreted and understood in terms of space-time rather than a classical space and time as separate ? I am really having a hard time wrapping my head around the application of space-time idea to the "expanding universe phenomena". (2) What about looking and explaining this phenomenon in terms of M-theory's premise , that there are 11 dimensions. How many of those dimensions are expanding and what is happening to the other dimensions ? Or am I asking the wrong question ? Because honestly, I am not sure that the dimensions M-theory talks about is a superset of the 3Space and 1Time dimension that we experience and are familiar with. Here, obviously I have assumed that it does. [link] [comments]  |
| If you put a helium balloon in space. Which way would it float? Posted: |
| Why is protein an information sink? Posted: |
| What effects does the ambient temperature have on the combustion process (fire starting)? Posted: Starting a fire in the winter is more difficult than the summer. I understand that heat is a contributing factor to starting a fire, so it makes sense that more energy would be required in order to get the initial reaction. So, how cold would it have to be before starting a fire is impossible? Would warming the fuel source make it easier? I plan to do some tests but living in Georgia right now makes it difficult to find anything cold enough without cleaning out my freezer. [link] [comments]  |
| Posted: At 140 decibel damage occurs immediately. So say I'm in a room with 140 db loud noise without hearing protection for five minutes, how many hair cells did I lose when I come out again? And how did it impact my hearing range? [link] [comments]  |
| How do rockets burn in space if there is no oxygen? Posted: |
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