Radio waves travel at the speed of light.
Radio waves move at the speed of light in a vacuum, as do all electromagnetic waves, and at a nearly identical but slightly slower speed in the Earth's atmosphere.
The longest wavelengths in the electromagnetic spectrum are found in radio waves, which typically have frequencies of 300 gigahertz (GHz) and lower.
Similar to light, X-rays, and other forms of radiation, radio waves are an electromagnetic radiation with much longer wavelengths.
As a result, they move much more quickly than sound itself through the air, which moves at a speed of 340 metres (1,125 feet) per second (or the speed of light, or 300,000 kilometers/186,000 miles per second).
It's simple to be deceived because when you hear the word "radio," you typically think of voices or music.
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Answer:
C) A ratio based on the mass of a carbon-12 atom
Explanation:
For each element, there is a characteristic number of protons, this number represent a type of atom and its called the atomic number
On the other hand we have the number of neutrons, and for one element which difers only on the number of neutrons, we have different isotopes from one element.
Together, protons and neutrons define the mass number
One property linked with the mass number, is the atomic mass, which is formerly expressed as "uma" (atomic mass unit)
By definition, one atom of carbon-12 (with 6 neutrons) has an atomic mass of 12 umas
Answer:
(a) Kav Ne = Kav Kr = 7.29x10⁻²¹J
(b) v(rms) Ne= 659.6m/s and v(rms) Kr= 323.7m/s
Explanation:
(a) According to the kinetic theory of gases the average kinetic energy of the gases can be calculated by:
(1)
<em>where : is the kinetic energy, k: Boltzmann constant = 1.38x10⁻²³J/K, and T: is the temperature </em>
<u>From equation (1), we can calculate the</u><u> average kinetic energies for the krypton and the neon:</u>
(b) The rms speeds of the gases can be calculated by:
<em>where m: is the mass of the gases and : is the root mean square speed of the gases</em>
For the neon:
For the krypton:
Have a nice day!
Answer:
326.85 degree celsius
Explanation:
Formula: 600K − 273.15 = 326.85°C
That's a true statement ... not a question.
When the kinetic energy of an object changes, energy
may be transferred either to or from the object.