1. Are zebra's black with white stripes or white with black stripes?
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
3. Why is ice clear and snow white?
4. Is it possible to melt a wooden log?
5. How does one boil gasoline without igniting it?
1.White with black stripes. The end and front are white so the middle color is black.
2.The light will just stay in place. It wont move at all and the photons will build up.
3.Ice is clear because its structure has very little striations to reflect light. Snow is white because it has many striations that reflect light instead of allowing it to pass through.
4.Melt? I don't think so, maybe.
5.Boiling gasoline is a necesarry step for many weapons like napalm or other explosives. Gasoline is actually pretty hard to ignite and needs to be incorporated with air before it is volatile.
That's what I call SHUTDOWN!!! Try to think up some better questions next time, buddy.
| madsencarl wrote: |
| That's what I call SHUTDOWN!!! Try to think up some better questions next time, buddy. |
Actually:
1. Zebras have black skin, with rows of black and white hair on top.
2. If in fact you were travelling at the speed of light you'd be braking some seriously fundamental laws so it is impossible to say at this stage what would happen.
3. Yeah, it's because of the air molecules trapped in the snow...
4. No because it decomposes chemically first.
5. Yeah, you just heat it.
1. Are zebra's black with white stripes or white with black stripes?
Zebras are optical illusions. You can decide this one for yourself. It all depends on the angle that you look at them from.
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
Then you will see things a little brighter outside. Duh! Even if you are going at the speed of light, you still have to see something don't you?
3. Why is ice clear and snow white?
Because ice is thin, and snow is packed together. If you look at really thick ice such as the ones on top of ponds, ice skating rinks, etc, they are white.
4. Is it possible to melt a wooden log?
If your definition of melting is burning then sure I guess...
5. How does one boil gasoline without igniting it?
Put it in a pot and turn it on high =) Technically it boils but we only see fire. It's like an instant combustion reaction thingy xD
Since everyone seems to be giving answers,
1. Green with orange polka dots. They really have no sense of matching colors.
2. You will go back in time.
3. Racism.
4. Yes. You can try it yourself, put a log in an oven and let it sit for a few hours while you're out of the house.
5. After dousing the floor with it, making sure it soaks completely into the floor, you merely need to drop a match.
Funny questions. See what I have:
1. It is the same as the half-empty or half-full bottle.
2. You will see the same effect that you would travelling with normal speed. At velocities above a certain percent of c, an other formula is to be used for addition instead of a+b. Check this link for further info: http://theory.uwinnipeg.ca/mod_tech/node137.html.
3. Because of their different structure. (Why is a diamond nice and a piece of coal ugly?)
4. I don't think so. As not being an expert of chemistry, I can only make a guess. Wood is a very complicated structure. The same atoms can be organized in a much simpler (=with less energy) way. So they will react with each other before they could turn into liquids.
5. As far as the energy needed to boil it is less than the energy needed to make it react with oxygene (=burn), you are good to go.
So far from my side. I liked all the other answers, too! i think that i little bit of research would have answered these questions. but you have just tried to point out some silly points of science.
5.Boiling gasoline is a necesarry step for many weapons like napalm or other explosives. Gasoline is actually pretty hard to ignite and needs to be incorporated with air before it is volatile.
How about you put in a vacuum?
| Quote: |
| How about you put in a vacuum? |
I think any liquid will boil in a vacumm instantly because the boiling temperature of liquids is dependent on the pressure acting on them.
The boiling point of petrol at normal atmospheric pressure is 95 degrees Celcius. | paul_indo wrote: |
| Quote: | | How about you put in a vacuum? |
I think any liquid will boil in a vacumm instantly because the boiling temperature of liquids is dependent on the pressure acting on them.
The boiling point of petrol at normal atmospheric pressure is 95 degrees Celcius. |
Yes. Nice try, Straightj...
When we are talking about boiling something, we (at least I) implicitly mean it in normal pressure conditions (101325 kPa). But don't put it in a vacuum, just in a bottle which contains only CO2 beside the petrol. And heat it. Yes, you're right - nothing will happen...hey hey....
I'm a newby here. Just need to get the hang of it.
Dont know who I'm dealing with....yet
whaha ... Could well be out of my league.
maybe I dare to try again..... sometime Don't be disappointed! Keep on sharing your ideas with this community! Make others think! That's the point.
Okay, so I see the science questions, but where does the "interesting" come in?
| ocalhoun wrote: |
| Okay, so I see the science questions, but where does the "interesting" come in? |
/me agrees with you again1. Are zebra's black with white stripes or white with black stripes?
Neither. Tehy don't exist.
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
I don't have a car. That's literaly impossible for me.
3. Why is ice clear and snow white?
They aren't.
4. Is it possible to melt a wooden log?
Maybe.
5. How does one boil gasoline without igniting it?
How DOESN'T one boil gasoline without igniting it?
| DarkGoku wrote: |
1. Are zebra's black with white stripes or white with black stripes?
Neither. Tehy don't exist.
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
I don't have a car. That's literaly impossible for me.
3. Why is ice clear and snow white?
They aren't.
4. Is it possible to melt a wooden log?
Maybe.
5. How does one boil gasoline without igniting it?
How DOESN'T one boil gasoline without igniting it? |
TBH ill have to agree with you more on this one, cuz i dont have a car. If molten lava is a form of combustion, why isn't the combustion of the molten lava within the core of the earth extinguished for lack of oxygen?
1. Zebra's are both black and white. You cannot presume a dominant and recessive color. Both colours are equal on the zebra.
2. You cannot turn your headlights on, since your car will be vapourised into pure energy at this speed.
3. Light scattering in snow.
4. Melt yes at very high temperatures (different compounds in wood melt and evaporate at different rates).
5. Boiling gasoline is routine in petrochemical plants, just remember the golden rule for fire. Oxygen, fuel and ignition. Just no ignition.
Most of you got 4 wrong.
In order to create a combustion (or burn stuff) reaction, you must have oxygen. If the log was placed in a fire in a pure Nitrogen enviroment, it would melt, not burn.
1. Zebras, obviously, are white with black stripes. Unless someone's a racist.
2. Nothing except draining power from your battery.
3. The chemical structure of snow and ice differ greatly, causing snow to appear to have a solid color and ice to be mostly transparent.
4. Yes.
5. It all depends on the boiling point of gasoline and what temperature the gas can reach without combusting. If the boiling point is higher, then boiling gasoline is not possible.
1) how does rogaine work, how can you regrow hair... what is the science behind that?
2) If any neurotransmitter within your brain vanishes due to 'overuse' (neurotransmitter's like serotonin) can your brain recover or is that permanent?
3) What is the answer to everything?
1. Drink, the solution and cause of all mankinds problems 
2. Brain Neurotransmitters are made all the time.
3. 5 yr old kid thinks "Why" is the question and the answer to everything. Probably true.
Edit: "Why" = question, "why not" = answer Question: If there is a space ship in space and its velocity is 0, and a hole is made in the ship. The pressure "ballances" and leaks out of the ship. it would freez into a solid state(right?) and heres my question, what velocity would the "air" be going at?
Or I guess the easy way of saying this, whats the velocity of pressure change?
| madsencarl wrote: |
| That's what I call SHUTDOWN!!! Try to think up some better questions next time, buddy. |
i agree with u | Neo7 wrote: |
Most of you got 4 wrong.
In order to create a combustion (or burn stuff) reaction, you must have oxygen. If the log was placed in a fire in a pure Nitrogen enviroment, it would melt, not burn. |
uhh... IF oxygen is needed to "burn stuff"... as you put it... where are you going to find fire (a burning thing) in a pure nitrogen environment? You just contradicted yourself. Fire is oxidation, so wouldn't exist in a pure nitrogen environment.
Also, the physical properties of cellulose cell structures prevent wood from melting, it only burns. And if anyone mentions resin, resin doesn't have a cellulose structure, it is a chemical secretion from the tree, not a living part of the tree. Resin is a sugar, and so the resin can melt.
Also, someone said (i didn't think to nab the quote), that the ends of the zebra are white, so the zebra is white with black stripes. ....... I've never seen a zebra with a white tail and white nose. Please send me a picture of one.The space-ship dilemma
Heat and energy can transfer by convection, by current and by radiation. In space, the only heat transfer is radiation. Stable materials in the space craft will emit little heat radiation due to good insulation. In space there is no matter surrounding the spacecraft, and no energy is lost to the environment - there is no sound in space, no cooling in space. The spacecraft will not achieve solid state.
When there is a hole, the air will move outward into space due to pressure. When the pressure drops low enough, there will not be any more movement. Since the spacegraft is at v=0 and gravity = 0, the only force of movement is pressure, so the velocity of air is related to the strength of the pressure.
1. Are zebra's black with white stripes or white with black stripes?
Zebras are white with black stripes because the black lines come to a point where as the white is more continous.
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
Exactly the same thing that always happens when you turn on your lights. Speed is reletive. You can be moving as little or as much as you want by using differnt refrence points.
3. Why is ice clear and snow white?
Ice has a smooth surface while snow is jagged.
4. Is it possible to melt a wooden log?
Yes if you put it in a container with just Carbon Dioxide in it and heated it it would melt.
5. How does one boil gasoline without igniting it?
Do it the same way you'd melt wood.
1. Are zebra's black with white stripes or white with black stripes?
Trick question unless its an albino zebra which is a clear answer.
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
You can't say it hypotheticly say that because our bodies can't substain that speed if our bodies have trouble with mach 2 what do you think will happen if your going at the speed of light. I wouldn't be worrying about what happens if i turn on the lights I would be more focused on not crashing.
Interesting questions but everyone else has given a more clear answer than me on the rest of them.
| xygblarbin wrote: |
| Neo7 wrote: | Most of you got 4 wrong.
In order to create a combustion (or burn stuff) reaction, you must have oxygen. If the log was placed in a fire in a pure Nitrogen enviroment, it would melt, not burn. |
uhh... IF oxygen is needed to "burn stuff"... as you put it... where are you going to find fire (a burning thing) in a pure nitrogen environment? You just contradicted yourself. Fire is oxidation, so wouldn't exist in a pure nitrogen environment.
Also, the physical properties of cellulose cell structures prevent wood from melting, it only burns. And if anyone mentions resin, resin doesn't have a cellulose structure, it is a chemical secretion from the tree, not a living part of the tree. Resin is a sugar, and so the resin can melt.
Also, someone said (i didn't think to nab the quote), that the ends of the zebra are white, so the zebra is white with black stripes. ....... I've never seen a zebra with a white tail and white nose. Please send me a picture of one. |
Fire isn't required to melt stuff silly...put ice in your microwave and set it to 10 seconds and see for yourself. | xygblarbin wrote: |
| Neo7 wrote: | Most of you got 4 wrong.
In order to create a combustion (or burn stuff) reaction, you must have oxygen. If the log was placed in a fire in a pure Nitrogen enviroment, it would melt, not burn. |
uhh... IF oxygen is needed to "burn stuff"... as you put it... where are you going to find fire (a burning thing) in a pure nitrogen environment? You just contradicted yourself. Fire is oxidation, so wouldn't exist in a pure nitrogen environment.
Also, the physical properties of cellulose cell structures prevent wood from melting, it only burns. And if anyone mentions resin, resin doesn't have a cellulose structure, it is a chemical secretion from the tree, not a living part of the tree. Resin is a sugar, and so the resin can melt.
|
What neo7 said is that you can melt logs in a pure nitrogen environment, but you can't in an oxygen rich environment.
There is no official melting point for cellulose since were using special circumstances. To melt a log requires melting cellulose, then melting the cell compartments section by section. All the chemical components will eventually melt (no greater than 300oC) in a pure nitrogen environment.Ok...my answers:
1. Are zebra's black with white stripes or white with black stripes?
-Either way...most people say White w/ black stripes
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
-The speed of light would be doubled. Imagine these situations:
A. Say you are speeding down in a a hot persuit (speed of a bullet), you aim to shoot out the tires. Your bullet wouldn't stay in the barrel, it would travel the speed of the car + the speed from the gunpowder.
B. Let's say you in a car trip and the kids in the back are having a fight. They throw a toy towards the front. Does the toy travels at a normal pace when it really is going a bit faster than the car is.
3. Why is ice clear and snow white?
-This has to do with the structures of how ice and snow form.
4. Is it possible to melt a wooden log?
-Yes. Place it in a hot, pure nitrogen enviorment (w/o O2)
5. How does one boil gasoline without igniting it?
-In the abscense of fire and caution, you can continue to rise the temp of a flammable substance above the igition point. Doesn't always hold true though...
3
why is ice clear while snow is white.
snow forms hexagonal crystals in unique patterns when rain droplets fall from the sky and freeze. These shape of these crystals results in both mie and Fraunhaufer light scattering, which reflect the white light. Ice is like water in that no ice crystals are formed with unique pattern, you have one solid chunk of ice which does not scatter light and should be transparent. However, due to uneven surfaces it may bend the light. just to comment on numba 4:
I assume if there is enough pressure and heat, the solid cell walls of the wooden log will eventually become liquid... right?? think phase diagram...
and numba 5:
like any other liquid, gasoline would boil, just that gasoline has a very low EVP so it evaporates quickly. The lack of IMF's mean that gasoline has a very low boiling point!
| Jayfarer wrote: |
Since everyone seems to be giving answers,
1. Green with orange polka dots. They really have no sense of matching colors.
2. You will go back in time.
3. Racism.
4. Yes. You can try it yourself, put a log in an oven and let it sit for a few hours while you're out of the house.
5. After dousing the floor with it, making sure it soaks completely into the floor, you merely need to drop a match. |
that's hilarious
it would be theoretically possible to travel faster than light though it depends on what medium it's travelling through, speed of light varies depending on the material (ie u still can't go faster than light in the same medium) | Neo7 wrote: |
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
-The speed of light would be doubled. Imagine these situations:
A. Say you are speeding down in a a hot persuit (speed of a bullet), you aim to shoot out the tires. Your bullet wouldn't stay in the barrel, it would travel the speed of the car + the speed from the gunpowder.
B. Let's say you in a car trip and the kids in the back are having a fight. They throw a toy towards the front. Does the toy travels at a normal pace when it really is going a bit faster than the car is.
|
nothing in our space time existence can go faster than light, see above post. though exiting our space time universe might lead to faster speeds which is intriguing... so the whole idea is kinda flawed, though einsteins thought experiments are interesting (google "Einstein train thought experiment") | Donutey wrote: |
| Neo7 wrote: |
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
-The speed of light would be doubled. Imagine these situations:
A. Say you are speeding down in a a hot persuit (speed of a bullet), you aim to shoot out the tires. Your bullet wouldn't stay in the barrel, it would travel the speed of the car + the speed from the gunpowder.
B. Let's say you in a car trip and the kids in the back are having a fight. They throw a toy towards the front. Does the toy travels at a normal pace when it really is going a bit faster than the car is.
|
nothing in our space time existence can go faster than light, see above post. though exiting our space time universe might lead to faster speeds which is intriguing... so the whole idea is kinda flawed, though einsteins thought experiments are interesting (google "Einstein train thought experiment") |
I well..seeing that it is light, it still is the fastest object. Besides...you have to take into account that the situation in the question is hypothetical.
Of course...there is the possiblity that the light would probably cease to exist reaching that excess speed.1. Are zebra's black with white stripes or white with black stripes?
Depends on what they put on in the morning.
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
Your headlights would do you no good. If by some miracle you got a car to go at the speed of light, and light travels at the speed of light, the beams from your headlights would go nowhere.
3. Why is ice clear and snow white?
Because all the other colors were taken.
4. Is it possible to melt a wooden log?
Why would you melt a log?
5. How does one boil gasoline without igniting it?
I'd say put it in a pot on the stove and turn it on high. I don't know, never tried.
Well, it's dumb, this question, but if you want to build a model cow, how much would it cost for the artifical skin?? If it costs less, it might use it to decorate my drawers... well, model drawers. I have a project at school to do that...
Well, I don't think anyone can help me with that because I'm in HK.
I you do, email me.
Thanks.
Henry
If it was possible for an object to attain light speed, nothing would happen as far as the vehicle is concerned. As an object approches the speed of light, time slows down. At the speed of light, time stops. The only thing that can reach that speed is a photon, which isn't really an object. It was shown back in the 60's that light behaves as a particle, and also as a wave by use of the double slit experiment. Which means the light would continue. Richard Feynman is credited with this and is part of why he got the Nobel Prize in Physics. He's also the same person who figured out the reasons for the seal failing in the first space shuttle accident.
And as far as the zebra....it's a cream filled, white frosted cake with black frosting stripes. lol
As for the answer about putting gasoline in a vacuum, that is considered boiling by any chemist.
In reality, you don't even need a vacuum. You just need to lower the pressure sufficiently.
2. Because of car and light speed are equal, simply light can not come out of headlights. So you can't benefit it.
| Jayfarer wrote: |
Since everyone seems to be giving answers,
1. Green with orange polka dots. They really have no sense of matching colors.
2. You will go back in time.
3. Racism.
4. Yes. You can try it yourself, put a log in an oven and let it sit for a few hours while you're out of the house.
5. After dousing the floor with it, making sure it soaks completely into the floor, you merely need to drop a match. |
I really like these ones. For me these are the correct ones.1. Are zebra's black with white stripes or white with black stripes?
It should be black with white stripes. To protect the zebra from the sun, it should produce more melanin in the skin. Therefore, it should be dark.
The black and white stripes acts only as a camouflage.
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
You won't see anything, theoratically. If you try to touch the headlights, it's hot.
3. Why is ice clear and snow white?
Ice is not actually 100% clear and it depends on the thickness. To qualify as "clear", it needs to be as clear as a flat clear glass. Ice is not even near that. The thicker the ice is, the more whiter or more opaque it looks.
For the snow, it consists of small flakes. The more flakes, the denser it gets, the more light is reflected all in the visible spectrum.
4. Is it possible to melt a wooden log?
Wood is made of Carbon. And the melting point of Carbon is -3550 (negative) degrees centrigrade or celcius. Boiling point of Carbon is 4827 degrees.
5. How does one boil gasoline without igniting it?
You can boil it without igniting it. Just like boiling crude oil to separate the substances. Please read fractional distillation of Crude Oil.
| Neo7 wrote: |
1. Are zebra's black with white stripes or white with black stripes?
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
3. Why is ice clear and snow white?
4. Is it possible to melt a wooden log?
5. How does one boil gasoline without igniting it? |
I guess that zebras have white skin with black stripes as white is more prominent on their face and ears.
The light of your headlights shall be visible but not by you. Only a person who looks at you as a front view can see the lights probably.
This is simple. Ice is frozen water and snow is frozen water vapour. You must also remember that ice is frozen down on the earth in certain cold rooms or in refridgerators. Anyways, snow is formed at a very high altitude. Therefore, all sorts of dust particles gather in the snow.
Yes. It is. If you heat it at a very high temperature, even though it is an insulaort of heat, it will melt. TAKE IT NEAR THE SUN AND TRY IT OUT!!!!!
You can boil gasoline by performing fractional distillation. | Neo7 wrote: |
1. Are zebra's black with white stripes or white with black stripes?
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
3. Why is ice clear and snow white?
4. Is it possible to melt a wooden log?
5. How does one boil gasoline without igniting it? |
1. Wrong stated question. These type of question really exists. Is electron wave or particle?
2. The same think like in normal velocity. The speed od light is constant for every observer.
3. Maybe some difraction.
4. In the place without oxygen.
5. again. | Straightj wrote: |
5.Boiling gasoline is a necesarry step for many weapons like napalm or other explosives. Gasoline is actually pretty hard to ignite and needs to be incorporated with air before it is volatile.
How about you put in a vacuum? |
How in the name of Jesus are u going to burn gasoline without air???????
You need oxygen, heat and fuel for fire to ignite!
You forgot oxygen!!!!
If you are in charge of central heating of this planet, I'm moving out. | Silentrob wrote: |
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
You can't say it hypotheticly say that because our bodies can't substain that speed if our bodies have trouble with mach 2 what do you think will happen if your going at the speed of light. I wouldn't be worrying about what happens if i turn on the lights I would be more focused on not crashing.
Interesting questions but everyone else has given a more clear answer than me on the rest of them. |
Wow...I don't know where to start. Our bodies have trouble "substaining" mach 2? I don't think that is in anyway true. Fighter pilots and astronauts wear special suits to fight G forces from acceleration (stright line and turns) but a slow acceleration to any speed should not be a problem.
Still not sure I've seen a definitive answer on this question. Obviously the question is what happens when a light source is traveling close to light speed. I really don't know, but the poster saying that it still appears to travel at light speed seems to mesh with what I learned back in university days.
Isn't that the whole relativity thing. Light appears to travel at 186,000 light years/sec no matter what the observational frame of reference is?Look what happens??
I'm on a train who is going near lightspeed. If i walk forward in the train then i'm going faster then lightspeed in function of the track.
Is it possible???
Grtzz,
Well science is my fav, and light is my fav in science.......
I can help you out with what seems to be the most controversial Questions that i found so far.......
1) zebra b/w...........
Black and white are complimentary colours. Black absorbs all the VIBGYOR, and white reflects all. So on a zebra, both complimentary colours are organized to create an optical illusion. If the argument has to be one of the 2 options then you have to screw the main purpose of the illusion because the illusion is perfect when it comes to hiding from predators.
2) Speed of light....car.....
If you move at the speed of light, The object behaves will resemble particle nature of light, and the object transforms to a photon. if you switch on the headlights......the light is emitted in wavelets.........so if youre sitting in the car...your lights will look off because, your velocity agrees with the relative velocity of the vehicle.
3)The other Q's have very interesting answers
If you were on a train moving at the speed of light, your velocity would not be greater than light. You would not be able to move, because of the back thrust or G as it is commonly known. If you were able to move, you would be a very heavy person, which would mean, you would fall backward because of Inertia, the second you stand up. If you are already standing, so as to accelerate along with teh train, you will still fall flat, because of the apparent change in your momentum as you raise one leg to stride forward. Hence unless you're floating in teh train, you would not be able to go faster; And in this case, you won't be in motion with the train, so theres no point discussing that.
There is no need to go as far as speed of light. This applies to speeds of sound like mach 6 - 8. Which is achievable only in Jets today, where the pilot cant as much as move his body, and has to be very strong in order to move his hands even.
I hope this has been helpful, and this was a brilliant question. Paradoxes always exist when it comes to lighth and time.........thats what makes it interesting. | Scimus wrote: |
There is no need to go as far as speed of light. This applies to speeds of sound like mach 6 - 8. Which is achievable only in Jets today, where the pilot cant as much as move his body, and has to be very strong in order to move his hands even.
|
Oh my lord, is there one valid fact in this post? Again, pilots at mach 4, 6, 8, whatever velocity you choose, are not affect by "g" forces while flying striaght and level. There is no physical stress associated with ANY velocity! It is ACCELERATION that causes problems. Fast acceleration, tight turns. that sort of thing. "G" force relates to the acceleration of gravity, earth norm. we are at 1 g standing still. Increasing speed at 2 g would make you feel like you weighed twice normal. But once your velocity stabilized, whether it was 100mph or mach 6, you would again only be feeling 1g.Well you are right......but I am obviously relating to the instant where you do experience G's. I dont care if you experience only 1G standing still or fly level. Most of todays aircrafts fly at a natural angle, and the 'G force experienced by pilots (though countered by the G suits), is always a minimum of 2 to 2.5 G, in top air superiority fighters of course.
But the point is, If you were moving at a speed of light, where you have constant acceleration, when momentum changes, the G force changes again. Which means, your movement relative to the train, at such velocities, would ultimately result in a back push by G. What I'm trying to say is, even after you stabilize back to 1G, if you try to do as much as move, you'd be varying velocity, which will result in a ton of G hitting you hard.
| Scimus wrote: |
Well you are right......but I am obviously relating to the instant where you do experience G's. I dont care if you experience only 1G standing still or fly level. Most of todays aircrafts fly at a natural angle, and the 'G force experienced by pilots (though countered by the G suits), is always a minimum of 2 to 2.5 G, in top air superiority fighters of course.
But the point is, If you were moving at a speed of light, where you have constant acceleration, when momentum changes, the G force changes again. Which means, your movement relative to the train, at such velocities, would ultimately result in a back push by G. What I'm trying to say is, even after you stabilize back to 1G, if you try to do as much as move, you'd be varying velocity, which will result in a ton of G hitting you hard. |
You almost sound like you know what you are talking about, but let's focus on one major point in your post.
"But the point is, If you were moving at a speed of light, where you have constant acceleration,"
When you are at the speed of light, THERE IS NO ACCELERATION. Acceleration is a change in velocity. At constant velocity, any veloicty, there is no acceleration. It's a simple definition you can find in any physic textbook.
Oh and BTW, a fighter flying straight and level eperiences 1g, toward the Earth. No acceleration, just the gravitational force.
Give a quick study of acceleration, velocity and gravitational force and let's talk again. I can point you to some good web pages and books if you are having problems.i'm sorry, i made a mistake.........what I was going to say was constant velocity, not acceleration.......i was all pumping and seem to have forgotten about the ground basic.
Now, YOu were saying that, fighters experience 1G......always. It seems obvious. But, at a certain acceleration towards the earth, ZERO G can be simulated....well within earths atmosphere. What I'm ttrying to say is, your angle of flight also plays a role in affecting G. 2 of todays top aircrafts, US's F-22, and Russia's MiG-29, fly at a basic inclination of 2 degrees. By inclination, i mean, the cockpit reference with respect to the surface. This inclination is achieved by a design mod in the wing, which allows the aircrafts to pull up in very strong turns, where G's race to 5G, (depending on tolerance of the pilot), in a matter of 2s-2.5s.
| Scimus wrote: |
Now, YOu were saying that, fighters experience 1G......always. It seems obvious. But, at a certain acceleration towards the earth, ZERO G can be simulated....well within earths atmosphere.
|
Which is why I specified straight and level flight. Just trying to make sure we all understand the diff between accel and vel.
| Quote: |
| What I'm ttrying to say is, your angle of flight also plays a role in affecting G. 2 of todays top aircrafts, US's F-22, and Russia's MiG-29, fly at a basic inclination of 2 degrees. By inclination, i mean, the **** reference with respect to the surface. This inclination is achieved by a design mod in the wing, which allows the aircrafts to pull up in very strong turns, where G's race to 5G, (depending on tolerance of the pilot), in a matter of 2s-2.5s. |
Not sure if you are referring to the angle of attack or the angle of incidence. I thought the main change to minimize G effects was the positioning of the pilot, but let's find a diff forum to discuss aerodynamics.
So, if you meant velocity, not accelreation, the lines are...
| Quote: |
| But the point is, If you were moving at a speed of light, where you have constant |
velocity | Quote: |
| , when momentum changes, the G force changes again. |
How is momentum changing at a constant velocity? What force is pushing this person back?
oh, and for future posts, do you understand the concepts of four-momentum vs. classical momentum?Momentum is a product of mass and velocity. When a person makes to move in a constant velocity conditions, there is an apparent change in mass due the action of inertia of motion......so there would be a significant change in momentum.....atleast enough to vary the G.
| Scimus wrote: |
| Momentum is a product of mass and velocity. When a person makes to move in a constant velocity conditions, there is an apparent change in mass due the action of inertia of motion......so there would be a significant change in momentum.....atleast enough to vary the G. |
????
That makes no sense. Yea, I am very aware that classical momentum is a function of mass and velocity, but at a constant velocity and mass, how is momentum changing? Once again, sure there is acceleration when you accelerate to a given velocity, but once you get there and keep going straight there is no acceleration, no g forces (from your motion), no momentum change and no force that I can see to push you back into your seat.
Last edited by HoboPelican on Mon Apr 24, 2006 3:46 pm; edited 1 time in totalscience and nature are interrelated
science is a sutdy in which we study the phenomenon of nature so science solely cant occur without nature. by taking nature as a book science has improved its knowledge and yet still there are lots of pages to be read out so they are the two faces of a coin.
| silliman wrote: |
| If molten lava is a form of combustion, why isn't the combustion of the molten lava within the core of the earth extinguished for lack of oxygen? |
Molten lava is not a form of combustion. It is a phase change in a material. Combustion is the combination of oxygen with another material. In the process energy is given of from the new, more efficient bonds that are created. Lava is mearly the liquid form of the elements that make up the earths center. However you do see plenty of combustion around lava as there is alot of energy given off it. This in turn leads to oxydization or the burning of the materials around it. I the precence of the lava oxygen may be released from some of there chemical bonds to form new ones and in the process burn things. But strictly speaking, if oxygen is not present you will see a degredation of chemical bonds and a melting of things.Also I might add that you will never melt the log as there is water in it. this water. As part of the waters structure is oxygen you will never have an oxygen free enviroment. The temperatures it would take to melt the log would likely free the oxygen from its bond with the hydrogen and allow combustion to occure.
According to Einstein's relativity theory, the speed of light is a constant to any observer. It's the time and space that change... [/b]1.It is just a paronomasia.We picture white when we see the word "white" and black when we see the word "balck",but if our ancestors use "white" as black and "black" as white we will do reversely.White with black stripes and black with white stripes are the same thing,it is just a matter of how to describe it.Nonesense!
2.when you travel in a car with a speed of light.You and your car will be shortened to zero according to Einstein's theory of relativity.the light of the car will not work at all.I mean no one knows what will happen beacouse it is just impossible.If I ask if I can live longer than the universe what will happen?Question of IMPORSIBBLE Things!Nonsense!
[b]3.The structure of ice and snow are not the same.Snow will become transparant if the pieces are arranged in order.I mean they are all transparent,do not misleaded by the appearence.
4.Wood log are noncrystal.According to the definition of crystal,matter with a spcial metelling temprature is called crystal.Noncrystal will not metal but will become soft at a range of temprature just like the glass does.So first of all you should no use "metel" here.Second,wood log's soften temprature is higher than it's burning temprature,so even if wood log is consist of only one material it will not become soft on exposuring in the atmosphere of oxygen.Third,wood log consist of a lot of materials and they have various soften temprature zone so.
5.I do not know what does the word "boil" in your question mean.I think with as low intelligence quotient as you do,your "boil" means the phenomena of water at the temprature of 100 degree in the ordinary condition.The fact of water's boiling is that a lot of bubble's creating and breaking up.And of course gasoline can make it if you provide him the condition of air isolation,low air pressure and etc.(at high temprature the gasoline will decompose,and gasline itself is also a mixture of a lot of shor-chain hydrocarbon.Ask your chemistry teacher for help,little boy!)
This guy is a riot. He has the nerve to insult the IQ of the original poster, but check out his spelling and punctutation. Man, you just gotta laugh at this guy.
| osbits wrote: |
[/b]1.It is just a paronomasia.We picture white when we see the word "white" and black when we see the word "balck",but if our ancestors use "white" as black and "black" as white we will do reversely.White with black stripes and black with white stripes are the same thing,it is just a matter of how to describe it.Nonesense!
2.when you travel in a car with a speed of light.You and your car will be shortened to zero according to Einstein's theory of relativity.the light of the car will not work at all.I mean no one knows what will happen beacouse it is just impossible.If I ask if I can live longer than the universe what will happen?Question of IMPORSIBBLE Things!Nonsense!
[b]3.The structure of ice and snow are not the same.Snow will become transparant if the pieces are arranged in order.I mean they are all transparent,do not misleaded by the appearence.
4.Wood log are noncrystal.According to the definition of crystal,matter with a spcial metelling temprature is called crystal.Noncrystal will not metal but will become soft at a range of temprature just like the glass does.So first of all you should no use "metel" here.Second,wood log's soften temprature is higher than it's burning temprature,so even if wood log is consist of only one material it will not become soft on exposuring in the atmosphere of oxygen.Third,wood log consist of a lot of materials and they have various soften temprature zone so.
5.I do not know what does the word "boil" in your question mean.I think with as low intelligence quotient as you do,your "boil" means the phenomena of water at the temprature of 100 degree in the ordinary condition.The fact of water's boiling is that a lot of bubble's creating and breaking up.And of course gasoline can make it if you provide him the condition of air isolation,low air pressure and etc.(at high temprature the gasoline will decompose,and gasline itself is also a mixture of a lot of shor-chain hydrocarbon.Ask your chemistry teacher for help,little boy!) |
A quick bit of info on the Zebra for you guys to think about.
| Quote: |
| The answer to this question comes down to perspective. Many zoologists would say that a zebra is white because its stripes end towards the belly and the belly is mostly white. Others would say that a zebra is black because if you shaved all the fur off a zebra the skin is mostly black. So it really depends on how you want to look at it. |
I have to go wiht black stripes because to me the white belly indcates the background color. Just my perspective. | HoboPelican wrote: |
This guy is a riot. He has the nerve to insult the IQ of the original poster, but check out his spelling and punctutation. Man, you just gotta laugh at this guy.
| osbits wrote: | [/b]1.It is just a paronomasia.We picture white when we see the word "white" and black when we see the word "balck",but if our ancestors use "white" as black and "black" as white we will do reversely.White with black stripes and black with white stripes are the same thing,it is just a matter of how to describe it.Nonesense!
2.when you travel in a car with a speed of light.You and your car will be shortened to zero according to Einstein's theory of relativity.the light of the car will not work at all.I mean no one knows what will happen beacouse it is just impossible.If I ask if I can live longer than the universe what will happen?Question of IMPORSIBBLE Things!Nonsense!
[b]3.The structure of ice and snow are not the same.Snow will become transparant if the pieces are arranged in order.I mean they are all transparent,do not misleaded by the appearence.
4.Wood log are noncrystal.According to the definition of crystal,matter with a spcial metelling temprature is called crystal.Noncrystal will not metal but will become soft at a range of temprature just like the glass does.So first of all you should no use "metel" here.Second,wood log's soften temprature is higher than it's burning temprature,so even if wood log is consist of only one material it will not become soft on exposuring in the atmosphere of oxygen.Third,wood log consist of a lot of materials and they have various soften temprature zone so.
5.I do not know what does the word "boil" in your question mean.I think with as low intelligence quotient as you do,your "boil" means the phenomena of water at the temprature of 100 degree in the ordinary condition.The fact of water's boiling is that a lot of bubble's creating and breaking up.And of course gasoline can make it if you provide him the condition of air isolation,low air pressure and etc.(at high temprature the gasoline will decompose,and gasline itself is also a mixture of a lot of shor-chain hydrocarbon.Ask your chemistry teacher for help,little boy!) |
A quick bit of info on the Zebra for you guys to think about.
| Quote: | | The answer to this question comes down to perspective. Many zoologists would say that a zebra is white because its stripes end towards the belly and the belly is mostly white. Others would say that a zebra is black because if you shaved all the fur off a zebra the skin is mostly black. So it really depends on how you want to look at it. |
I have to go wiht black stripes because to me the white belly indcates the background color. Just my perspective. |
Oh,come on.
I was not attempting to insult anybody,perhaps my poor english give you some illusion.I am sorry for that.I am trying my best to improve my english,although I hate learning it very very very much.I allway believe that my mother tongue is the best... | osbits wrote: |
Oh,come on.
I was not attempting to insult anybody,perhaps my poor english give you some illusion.I am sorry for that.I am trying my best to improve my english,although I hate learning it very very very much.I allway believe that my mother tongue is the best... |
Ok, Apologies extended. I may have over-reacted. Your statement about the posters low intelligence annoyed me a bit and got my hackles up.
And if English is a second language for you, congrats! It was good enough for me to not even consider that it was not your first language.
I will now slink away..... Yes you can boil gasoline. You can simply do it on the stove in a regular pot. The BIG THING IS DO NOT USE A OPEN FLAME STOVE!!! If you are going to do it you need to use an electric stove preferably one of the new ones that are enclosed. As long as you do that and keep any ignition source away you should be fine. Once again it can be done but do not use a open flame stove...Bad things will happen if you do. Also if you do this be careful with the residue that will be left behind in the pot. It is combustible so dispose of it carefully.
1. Are zebra's black with white stripes or white with black stripes?
Actuall, some zebras are white and some are black-- white one bone on day time and those are black catagory bone duting night time
2. Let's hypotheticly say that you are travelling at the speed of light in your car. What will happen if you turn your headlights on?
Travelling in a speed of light you will (matter in you ) be completely converted in to energy (radiation) and physical you will not exist to drive the car
3. Why is ice clear and snow white?
due to scattering--- it scatter almost all colors equllly--not rayling scattering, which take place in sky---reflected light from ice will have all colors in it--reslutiig a white color
4. Is it possible to melt a wooden log?
sorry, its a sold can not be liquified....its ignition point come first than melting point...
5. How does one boil gasoline without igniting it?
yes, keep it at an atmosphear where sourrounding temperature is greater than ignition temperature.
expect such questions again
