In which state of matter does the light travels faster?

Answer 1

Solids transmit sounds fastest, and farthest. The more dense the material, the better sound can be conducted. The old cowboy western movies always used to depict a scout bending down to listen to the ground, because hoofbeats could be heard through the earth much farther than the sounds could travel through the air.

An Examination of the Phenomenon:

The Speed of Sound:

Sound travels at different speeds depending on what it is traveling through. Of the three mediums (gas, liquid, and solid) sound waves travel the slowest through gases, faster through liquids, and fastest through solids. Temperature also affects the speed of sound.

Gases:

The speed of sound depends upon the properties of the medium it is passing through. When we look at the properties of a gas, we see that only when molecules collide with each other can the condensations and rarefactions of a sound wave move about. So, it makes sense that the speed of sound has the same order of magnitude as the average molecular speed between collisions. In a gas, it is particularly important to know the temperature. This is because at lower temperatures, molecules collide more often, giving the sound wave more chances to move around rapidly. At freezing (0º Celcius), sound travels through air at 331 meters per second (about 740 mph). But, at 20ºC, room temperature, sound travels at 343 meters per second (767 mph).

Liquids:

Sound travels faster in liquids than in gases because molecules are more tightly packed. In fresh water, sound waves travel at 1,482 meters per second (about 3,315 mph). That's well over 4 times faster than in air! Several ocean-dwelling animals rely upon sound waves to communicate with other animals and to locate food and obstacles. The reason that they are able to effectively use this method of communication over long distances is that sound travels so much faster in water.

Solids:

Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air. The exact speed of sound in steel is 5,960 meters per second (13,332 mph)! But, this is only for the majority of solids. The speed of sound in all solids are not faster than in all liquids.

Answer 2

Light and stiff materials like diamond (12000 m/s).

The speed of sound in any material is directly propotional to the square root of its elastic modulus and inversly propotional to the square root of the material's density.

formula : v=(E/d)0.5 or (B/d)0.5

where E is elastic modulus (in case of solids it is Youns modulus (Y) and in case of fluids its bulk modulus(B)) & d is density

X raised to the power of 0.5 :[ X0.5 ] means the square root of X

Alternative answer:Beryllium 12600 m/s

In solids speed of sound = (E/3*density*(1-2v))0.5

where v is Poissons coefficient and E is the elastic modulus as above

Answer 3

Light travels the fastest in a vacuum, where there are no particles to impede its speed. This is because in a vacuum, light can move freely without interacting with any medium.

Answer 4

Sound travels through a solid the fastest.

Answer 5

The more dense the medium, the faster sound will travel. Air gets more dense the cooler it gets. The colder the air, the faster the sound will travel.

Answer 6

Beryllium metal is the solid through which sound travels fastest, at almost 13 km/s.

Answer 7

light travels the fastest in gas

Answer 8

wlly

Answer 9

solid

Answer 10

liquid