Probably you mean temperature, rather than heat. And the temperature is more related to a particle's ENERGY than to its SPEED. I believe the degrees of freedom also have something to do with it - something like, average kinetic energy per particle and degree of freedom. Anyway, even though more speed means more energy, larger particles will move more slowly for the same kinetic energy - and therefore they will be slower at the same temperature. Also, while the speed is limited to the speed of light, there is practically no limit to the kinetic energy a particle can have.
The volcanic ash goes in the air because, they are air-borne materials/particles, and can easily and conviniently be carried and transported by wind, since they are light and not as dense as lava.
At present, the size of our Universe is unknown. Because light can travel no more than about 300,000 kilometers per second, and because light has only been traveling to us since the time of recombination; there is a limit on how much of our Universe we can see. How much larger is our Universe, beyond what we can presently see, is a matter of speculation.
since electrons are negative and protons are posotive, the subatomic particles attract because of the opposite charges
Light travels at 186,000 miles per second, which means you have to travel faster than that to break the light barrier. This feat is technically "impossible", since the faster you move, the more mass you have and the more mass you have, the more energy is required to move you, and by the time you reach the speed of light, you will need to have infinite energy. This doesn't apply to light particles, since they have no mass.
A law of conservation called "The Conservation of Momentum.' This law underwent severe criticism at it's introduction in the scientific community, because particles in accelerators did not seem to conserve their momentum. it has since been proven that the discrepancy is made up for by the tiny, hard-to-detect neutrino particles.
Light from the sun (or any other source) travels in particles, which strike objects and are often partially absorbed. A shadow forms behind a tree because when the particles hit the tree, they are absorbed and reflected, so that everything on the other side of the tree, where the light would have gone, receives no light. However, some light will bounce off of other objects and go behind the tree in the other particles' place. Since this other light will already have been partially absorbed, it will be more dim than direct light. Because of this, we are able to see in the shadow, but since the light there is not as strong, it is darker. This darker region behind the tree, is the shadow.
Since there are essentially no particles in a vacuum to get in the light rays way. Thus less disturbance.
Yes, they're called photons. I believe the small particles of light play a major role in Quantum Physics, but I studied that last year in school, and I've long since forgotten.
Since the legal limit is a percentage of concentration in your blood, the amount it takes to put you over the limit completely depends on how much blood there is in you.
There are more cold particles than warm particles because the particles attract to frozen temperatures. They do this because since the colder the temperature is usually tight the molecules tighten and there is room for only the particles to squeeze.
As dust particles build up on your furniture, it will fall off and land on your floor after motion of air since it is very light. In those dust particles are microscopic dust mites which cause itching irritation.
The volcanic ash goes in the air because, they are air-borne materials/particles, and can easily and conviniently be carried and transported by wind, since they are light and not as dense as lava.
Newtonian physics. Every action has an equal and opposite reaction - the object pushes back with the same force the light particles had. Since the speed of light cannot change without refraction, it still goes at the same speed.
Tachyons are hypothetical particles which can travel faster than light. But since they are so fast, none have been detected so far.
At present, the size of our Universe is unknown. Because light can travel no more than about 300,000 kilometers per second, and because light has only been traveling to us since the time of recombination; there is a limit on how much of our Universe we can see. How much larger is our Universe, beyond what we can presently see, is a matter of speculation.
It reflects light since it is a good reflector.
Light from the sun (or any other source) travels in particles, which strike objects and are often partially absorbed. A shadow forms behind a tree because when the particles hit the tree, they are absorbed and reflected, so that everything on the other side of the tree, where the light would have gone, receives no light. However, some light will bounce off of other objects and go behind the tree in the other particles' place. Since this other light will already have been partially absorbed, it will be more dim than direct light. Because of this, we are able to see in the shadow, but since the light there is not as strong, it is darker. This darker region behind the tree, is the shadow.