Do protons and neutrons maintain distinction inside the nucleus of an atom or do they combine into a quark soup? |
- Do protons and neutrons maintain distinction inside the nucleus of an atom or do they combine into a quark soup?
- Is charge always conserved?
- Are the blueprints for building a penis solely on the Y chromosome?
- What was the extent of glacio-isostatic depression in the last ice age?
- Can laws of physics in the Universe change over time?
- Would a person weigh more at the pole than at the equator?
- How is gravity "weak"? What scale are we using to compare the forces?
- Is a 'randomly' generated real number practically guaranteed to be transcendental?
- What do we know about human intelligence? Is it related to intrinsic strengths, skills, or mental capacities?
- Does the Moon at some point enter Earth's magnetopause?
- In Deal or No Deal, when you get to the end (just two unopened cases left), you're given the option to switch. If the $1M suitcase is still in play, does the monty hall problem apply... at 96% probability?
- Is our moon boring?
- Can a central force produce different closed orbits?
- How does electromagnetic shielding work?
- Why do the bubbles on the surface of a drink (coffee, for example) seem to attract one another?
- Do other species have different blood types?
- If a bowling ball was hollow, but had the same mass, would the physics of bowling be any different?
- What causes the pressure changes over the Pacific Ocean that causes El Nino?
- Why did my apple juice only freeze after I poured it in a cup? (see pic inside)
- How many distinct arrangements are there of 100 dice in 6 different colours?
- Question about anti matter-matter annihilation?
Posted: 08 Jan 2016 06:10 PM PST Do the three quarks of a proton/neutron stay bound together strongly while acting as the nucleus of an atom? Protons and neutrons are made of the same two quarks so it seems logical to me that they may just form a quark soup in the nucleus. Any reading material would be appreciated. Thanks! [link] [77 comments] |
Posted: 09 Jan 2016 05:45 AM PST I know the fundamental principle of charge conservation, but I am wondering if there is any situation in which it could be seen differently (something similar to "mass conservation" and the Energy-Mass relationship) [link] [9 comments] |
Are the blueprints for building a penis solely on the Y chromosome? Posted: 08 Jan 2016 01:13 PM PST |
What was the extent of glacio-isostatic depression in the last ice age? Posted: 09 Jan 2016 04:03 AM PST How much did the earths crust warp (distance-wise) during the last ice age when covered with up to 1500m if ice? I am sure there is a way of working it out, but cannot find a solution! [link] [1 comment] |
Can laws of physics in the Universe change over time? Posted: 08 Jan 2016 12:55 PM PST |
Would a person weigh more at the pole than at the equator? Posted: 08 Jan 2016 06:10 PM PST I ask because it seems the centrifugal force would be greater at the equator than the the pole, effectively reducing the force of gravity at the equator. This question is assuming the Earth is a perfect sphere (which I know is not the case). [link] [12 comments] |
How is gravity "weak"? What scale are we using to compare the forces? Posted: 09 Jan 2016 03:37 AM PST I've heard the example of being able to counteract the gravity of the entire earth merely by picking something up, but that is a subjective description of weak. In what way can four forces be compared that makes us wonder why gravity is weak, and why would we expect them to be similar? In other words, why do we need an explanation as to its relative weakness? I hope this question makes sense... [link] [8 comments] |
Is a 'randomly' generated real number practically guaranteed to be transcendental? Posted: 09 Jan 2016 05:27 AM PST I learnt in class a while back that if one were to generate a number by picking each digit of its decimal expansion randomly then there is effectively a 0% chance of that number being rational. So my question is 'will that number be transcendental or a serd?' [link] [3 comments] |
Posted: 08 Jan 2016 06:52 PM PST For example: strong short term memory, strong long term memory, high sensory sensitivity/awareness. Are there different modalities of general intelligence? [link] [9 comments] |
Does the Moon at some point enter Earth's magnetopause? Posted: 08 Jan 2016 04:55 PM PST So I was reading a NASA article about what happend when the Moon interact with the magnetotail, it was interesting so I begin to read a bit about the magentic field/magnetosphere subject and I ended up with a confusion... At some point I got that the magnetopause was the border of the magnetic field and that in the non-facing-sun side (the tail) it was max. 15ER. Then I read that the Moon orbits at like 60ER, and then it says in another article that the magnetotail goes to 200ER. So at first I thougt it was refering to the magnetosheath but at the end I ended up confused. Where does the moon enter in the way he NASA article's refers to? Side note, I'm not a native english speaker so sorry for any gramatical/ortografical mystake. [link] [3 comments] |
Posted: 08 Jan 2016 08:43 AM PST As I understand it, the Monty Hall problem involved 3 doors with on prize. When you select a door, you have a 1/3rd chance or 33.33% probability of having the prize, and the other doors represent a 66.67% probability. When one of the other doors is opened and not a winner, the remaining door still represents a 66.66% probability. In Deal or No Deal, there are 26 suitcases. As you progress through the game, cases are opened and their values revealed. When you first select a suitcase, your suitcase has a 1 in 26 chance of containing $1M, or a 3.8% chance. And the other suitcases represent a 96.2% chance of holding the big prize. If you get down to the final two (your selection, and one other on stage), and the $1M hasn't been hit. Does it still represent a 96.2% probability of containing $1M? [link] [54 comments] |
Posted: 08 Jan 2016 10:02 AM PST From an astronomy point of view, it seems there is way cooler stuff happening on other moons in our solar system. For example, Ganymede has its own magnetic field, Titan has an atmosphere that is similar to some planets, Io has its highly volcanic surface, etc. So, what is the popular opinion of our moon in the astronomy community? Is there much reason to go there and study it or do we know what we're going to see? [link] [24 comments] |
Can a central force produce different closed orbits? Posted: 08 Jan 2016 11:02 PM PST I saw this on /r/space and was interested in the mechanics of a geocentric solar system. Could a central force produce two different closed curve orbits other than a circle and ellipse? Could an object subject to a central force orbit the source of the force on a cardioid, or any other closed curve, for example? [link] [6 comments] |
How does electromagnetic shielding work? Posted: 08 Jan 2016 04:12 PM PST I've read the wikipedia article here: https://en.wikipedia.org/wiki/Electromagnetic_shielding But I can't "picture" how the mechanism of having a cage-like piece of metal with holes would affect electromagnetic waves. EM waves are caused by photons, right? And the photon "wave" doesn't actually change positional amplitude when the wave amplitude changes, right? Photons essentially travel straight. So if you have 10E18 or however many photons per square meter traveling at a shielded cage, wont they just travel straight through the holes? Why would there be a frequency dependence on whether or not photons will make it through different size holes? [link] [4 comments] |
Why do the bubbles on the surface of a drink (coffee, for example) seem to attract one another? Posted: 08 Jan 2016 08:19 AM PST I've noticed that not only do bubbles appear to "gravitate" towards each other, but they also like to form rings around the inside of the mug, instead of all clumping together or floating somewhere in the middle. [link] [3 comments] |
Do other species have different blood types? Posted: 08 Jan 2016 10:29 AM PST |
If a bowling ball was hollow, but had the same mass, would the physics of bowling be any different? Posted: 08 Jan 2016 10:42 AM PST |
What causes the pressure changes over the Pacific Ocean that causes El Nino? Posted: 08 Jan 2016 04:55 PM PST Hi, I recently became interested in El Nino and looked at what causes it. I found that due to pressure changes in the east and west Pacific, trade winds weaken. This slows the ocean currents and warmer waters flow east - increasing precipitation in the western side of the Americas. But I couldn't find any explanations/theories that show what causes the pressure changes in the first place. I was wondering if it had something to do with the sun / earths orbit, or any other factors? If anyone has a response, could you include credible links/sources? Thanks! [link] [comment] |
Why did my apple juice only freeze after I poured it in a cup? (see pic inside) Posted: 08 Jan 2016 08:50 AM PST So I accidentally left a bottle of fizzy apple juice ("Apfelsaftschorle") in the freezer for a day. When I took it out, it was still liquid. Then I poured some into the cup and it started freezing. In this picture you can see the cup. At first everything was liquid (like the bottom) but the rapidly froze in a bottom-up manner. Why? Has it something to do with that before, it was colder than 4°C? [link] [6 comments] |
How many distinct arrangements are there of 100 dice in 6 different colours? Posted: 08 Jan 2016 10:01 AM PST See image here: http://img.dxcdn.com/productimages/sku_8667_1.jpg How many different TO THE HUMAN EYE 10x10 squares can we arrange? Let the number of dice of each colour be a,b,c,d,e,f so one constraint is a+b+c+d+e+f =100. EDIT: "To the human eye" means that each arrangement is different for an observer from the same position - ie orientation of 2,3 and 6 die faces matters, and entire rotational symmetry of the 10x10 square matters. Simply - how many different arrangements of such a 10x10 square are there? [link] [13 comments] |
Question about anti matter-matter annihilation? Posted: 08 Jan 2016 07:56 AM PST Does anti matter annihilate with any matter or just with its exact opposite? As in, would antihydrogen be safe in containment of pure carbon for example and only annihilate with hydrogen or does it react to everything? If it does annihilate with all normal matter, what would happen if we pushed antihydrogen to say uranium (or any other really heavy element)? [link] [6 comments] |
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